195results about How to "Meet the stiffness requirements" patented technology

The invention discloses a magnetic pulse connecting method and a joint structure for thin-wall metal pipelines and provides a safe and high-efficiency magnetic pulse connecting method and a magnetic pulse connecting joint structure for similar and dissimilar thin-wall metal pipelines. A coil-magnetic concentrator composite inductor or a coil inductor is connected with electromagnetic pulse forming equipment so that the pipelines of various metal materials or various structure shapes can be connected in a magnetic pulse way. The transition area of the joint connecting interface is small, the brittle phase or intermetallic compound almost cannot be generated, and the joint almost has no heat affected area and torsion deformation and has high strength and corrosion-resistance property; the tension strength and torsion strength of the joint are respectively higher than those of weak base metal; the subsequent cleaning procedure and post-weld heat treatment are not needed; and the connected pipeline satisfies certain rigidity requirement, cannot be subjected to the plastic deformation in the magnetic pulse connecting process and has high process flexibility.

The invention provides an electric welding rod with ultra low hydrogen and high toughness. The electric welding rod comprises core welding-wires and electrode coating composition. The electrode coating composition comprises the following components (weight percentage): 38-42 percent of marble, 21-28 percent of fluorspar, 1-3 percent of white titanium pigment, 6-10 percent of ferrotitanium, 0.5-1.5 percent of low-carbon ferromanganese, 3-7 percent of ferrosilicon, 3-6 percent of manganese metal, 2-4 percent of metallic chromium, 1-3 percent of mica, 1-3 percent of ferromolybdenum, 1.5-3.5 percent of ferrovanadium, 1-4 percent of nickel powder and 2-4 percent of rare earth metal. H08A is adopted as the core welding-wires, and water glass is used as the cementing agent. The electric welding rod fills the blank of electric welding rod needed for an ultra-thin large diameter circular saw blade, and simultaneously the electric welding rod can also be used for the welding of products in structures of carbon tool steel, alloy tool steel and spring steel material. The electric welding rod has good welding processing property and crack resistance, and simultaneously has very high welding strength, rigidity, plasticity and toughness, and the color of the welding seam is identical with the color of the base material.

The invention relates to a system and method for tunnel water-bursting test under high crustal stress-osmotic pressure. The system comprises a main box used for simulating excavation of a tunnel model, the main box is of integrated structure and placed on a base, two opposite sides of the base are fixed on two slide rails, and an n-shaped counter-force frame is arranged between the two slide rails. The bottom ends of two support legs of the counter-force frame are fixed detachably on the slide rails. The top beam of the counter-force frame is fixedly connected with the top end of a loading system. An information monitoring element is arranged in the main box, the loading system and the information monitoring element are connected with a monitoring and controlling system. The monitoring and controlling system controls the loading system to apply crustal stress and osmotic pressure to the model material in the main box.Research on tunnel water bursting under the condition of high crustal stress-osmotic pressure engineering excavation turbulence is realized, and actual needs of the engineering are met.Further, fully automatic control of operation is realized and experiment operation is greatly facilitated.

The invention relates to a clearance type sealing Stirling thermoelectric converter supported by adopting plate springs. The clearance type sealing Stirling thermoelectric converter comprises a hot cylinder, a compression cylinder and a linear alternating current generator which are fixedly connected through a flange, wherein the interior of the hot cylinder is sequentially sleeved with a heat exchanger and an expansion cylinder towards the center, and an expansion piston is arranged in the expansion cylinder; the expansion piston is sleeved on an expansion piston rod; and an inner cavity of the expansion piston is provided with a plurality of groups of supporting flexible plate springs which are respectively sleeved on limit pipes on the inner wall of the expansion piston and the expansion piston rod for positioning so as to ensure that clearance sealing structures are radially formed between the expansion cylinder and the expansion piston and the expansion piston and the expansion piston rod. According to the clearance type sealing Stirling thermoelectric converter, the non-contact type clearance sealing structures are realized by adopting the flexible plate spring supporting systems, and meanwhile, the rigidity requirement of a generator active cell oscillation system can be met, so that the structural characteristic of no abrasion after long-term running of moving components is realized so as to guarantee the long service life and the high rigidity of the Stirling generator.

The invention belongs to the technical field of the metal plate forming and relates to an integral panel creep aging forming tool based on an autoclave. The tool comprises a support structure, a reference platform, a clamping plate, a limiting base, an internal side wall, an external side wall, a base plate and a sealing structure, wherein the support structure is of a frame structure, the reference platform is fixed on a plane of the support structure, the reference platform is provided with the limiting base, and the internal side wall and the external side wall are arranged around the reference platform. The integral panel creep aging forming tool adopts a detachable clamping mode to bring convenience to target profile adjustment and greatly save time and economic cost. The integral tool is large in size and high in precision, and an integral wall which is 5.5 meter long can be formed. The support structure of the tool adopts a mode of a frame so that not only the integral rigidity requirements can be met, but also the uniformity of a temperature field can be ensured. The side walls around the tool can be disassembled, so that the clamping plate can be conveniently replaced, and the deformation and heat processing problems caused by welding can be reduced. With the adoption of a unique sealing structure of the tool, a sealing bag cannot be damaged under the pressure of 1.5MPa of the autoclave so as to ensure the sealing effect.

The invention relates to a car body light-weight design method. The method comprises the steps of building a car body finite element model; 2, building a car body modal, bending and torsional rigidityanalysis model, and calculating and obtaining modal, bending and torsional rigidity values; 3, building a sensitivity analysis model and performing solution calculation; 4, performing finishing according a sensitivity analysis model calculating result, obtaining a sensitivity analysis result of a car body metal plate corresponding to the design variable; 5, building a car body light-weight optimizing calculation model, and performing solution calculation; 6, performing extraction on the calculation result, and modifying a thickness value of some metal plates so as to meet the requirement forengineering, and forming a novel BOM table; 7, judging whether the BOM table reaches a light-weight design target or not, if yes, completing designing, and if not, repeatedly executing the step 6 tillthe light-weight design goal is reached. Compared with the prior art, the requirement for the car body rigidity is met effectively, the car body weight is lowered, the high engineering practicabilityis achieved, and the applicability is high.

The invention relates to a composite electrical cross arm and a design method of a structure thereof, belonging to the design field of assorted structural parts of transmission poles. The electrical cross arm is of cylindrical solid structure and comprises an inner core layer, a middle layer and an outer layer from inside to outside in a radial direction. The middle layer is the base and is a composite hollow pipe, the core of the pipe is filled with foaming polyurethane material to form the inner core layer, and the outer surface of the pipe is wound with glass fiber polymer matrix composite material to form the outer layer. The design method comprises the steps of: carrying out solid modeling, meshing, load applying and analog computation by utilizing the operation order of an ANSYS and confirming the structure setting, optimization of outer winding thickness and direction angle of the cross arm so that the cross arm meet the requirements of a design safety coefficient value and deflection. The cross arm produced by the design method has the advantages of light weight, good insulation performance, convenient installation and high section bending resistance index, and can effectively improve a safety margin when being applied to an actual circuit, can reduce the cost and is beneficial for popularization and application.

The invention discloses a piezoelectric power generation type damping-adjustable hydro-pneumatic suspension, belongs to an oil-gas separation type hydro-pneumatic suspension and belongs to the field of automobile devices. The piezoelectric power generation type damping-adjustable hydro-pneumatic suspension is composed of a suspension cylinder (12), subassemblies of the suspension cylinder, an energy accumulator (1) and subassemblies of the energy accumulator and is characterized in that the suspension cylinder (12) and the energy accumulator (1) are connected through a hydraulic valve group (7), the hydraulic valve group (7) is composed of an electromagnetic switching valve (10), throttling valves (8) and a one-way valve (9), one of the throttling valves (8) is connected with the one-way valve (9) and then is in parallel connection with the other throttling valve (8) before being connected with the electromagnetic switching valve (10), a piston rod (14) is installed inside the suspension cylinder (12), the tail end of the piston rod (14) is connected with a main piston (13), piezoelectric materials (3) and buffer blocks (2) are at least arranged on the working face of the main piston (13) or at the top of an inner cavity of the suspension cylinder (12), a floating piston (4) is arranged inside the energy accumulator (1), the piezoelectric materials (3) and the buffer blocks (2) are arranged on at least one of the upper and lower surfaces of the floating piston (4), and holes are formed in upper and lower ends of the energy accumulator (1) respectively and connected with a charging and discharging oil valve hole (18) and a charging and discharging gas valve hole (17) respectively. By the aid of the hydro-pneumatic suspension, vibration energy can be fully converted into electric energy which is supplied to electronic devices of vehicles for usage; and the hydro-pneumatic suspension is simple, energy-saving and environmentally friendly and has a natural vibration attenuation effect on the vehicles.

The invention relates to a railway frame bridge construction method which mainly aims at solving the problems that an existing construction method can hardly meet the construction quality requirementand a construction period is long. In a foundation treatment construction method, construction schemes such as a broken-stone-sandwiched sand cushion layer, CFG piles, heavy grinding and dynamic compaction are adopted; in foundation construction, the axis and the side boundaries of a frame bridge are defined through a total station, the elevation is measured through a water level, and an excavation line and the excavation depth are determined; and in bridge body construction, supports and an inner mold are installed, reinforcing steel bars are manufactured and tied, an integrally-combined formwork is adopted as a bridge body outer mold, side wall and top board concrete is poured, edge wall and top board concrete is cured, the formwork is detached, and finally retaining wall construction and settlement joint and waterproof layer construction are conducted. The method has the beneficial effects that the construction speed is high, the quality is good, and a construction period is short.

The invention provides a superlow-hydrogen, high-strength and high-toughness alloy tool steel welding electrode with outstanding anticracking performance, which comprises a core wire and a welding electrode covering composition, wherein the electrode covering composition comprises the following components in percentage by weight: 35 to 45 percent of marble, 20 to 30 percent of fluorite, 2 to 4 percent of titanium white, 8 to 13 percent of ferrotitanium, 0.5 to 1.5 percent of alkali, 3 to 6 percent of metal chromium, 4 to 8 percent of metal manganese, 4 to 8 percent of nickel powder, 3 to 6 percent of ferromolybdenum, 2 to 6 percent of rare earth silicon, 2 to 6 percent of quartz and 2 to 6 percent of feldspar. The core wire is made of H08A steel or H08E steel, and potassium sodium mixed water glass is used as a bonder. The alloy tool steel welding electrode can be used as a superlarge-section alloy tool steel (5CrNiMo) structure welding electrode which used to lack and can be used for welding other high-strength alloy steel structure products. The welding electrode has an excellent welding process property, high welding strength, rigidity, plasticity and ductility.

The invention relates to an offshore underwater component device mooring cable. The offshore underwater component device mooring cable is characterized by being of a sheath-core composite double-layer structure, an inner core is of a eight-strand structure made of DM20 ultra-high molecular weight polyethylene, an outer layer is a fixing sheath formed by weaving wear-proof high-strength polyester fibers, the inner core is formed according to the steps of manufacturing rough yarn, manufacturing rope yarn, manufacturing strands, weaving ropes, soaking the inner core in resin, prestretching the inner core and drying the inner core, and the fixing sheath is formed according to the steps of splicing threads, twisting the threads, manufacturing strands and weaving the 32 strands around the inner core into the fixing sheath in a one-off mode through a double-layer weaving machine.

The invention relates to a vertical storage tank leakage monitoring system with a dual-layer tank bottom plate structure. The provided system aims at realizing real-time monitoring of the leakage situation of a tank bottom plate of a vertical storage tank. The technical scheme is that the vertical storage tank leakage monitoring system with the dual-layer tank bottom plate structure comprises the vertical storage tank which consists of a tank body and a tank body, and a leakage monitoring system which is used for monitoring leaked gas. The vertical storage tank leakage monitoring system with the dual-layer tank bottom plate structure is characterized in that the tank bottom comprises an upper layer bottom plate, a lower layer bottom plate and a closed cavity which is arranged between the upper layer bottom plate and the lower layer bottom plate, the leakage monitoring system comprises a circulating pipeline which is provided with a circulating pump and is connected with the cavity, an inert gas source which is communicated with the circulating pipeline, and a PLC (programmable logic controller) control center which is respectively connected with an infrared gas transmitter, a pressure transmitter, a temperature and humidity transmitter and the circulating pump through data lines.

The invention discloses a post-tensioning prestress type self-centering steel frame structure. The post-tensioning prestress type self-centering steel frame structure comprises at least one structural unit. Each structural unit comprises two steel frame columns, a T-shaped steel beam, a self-centering connecting piece and friction energy consumption parts, wherein the T-shaped steel beam is used for connecting the upper ends of the steel frame columns, the self-centering connecting piece is located on the lower side of the T-shaped steel beam and used for connecting the steel frame columns, and the friction energy consumption parts are located on the lower portion of the self-centering connecting piece. Each self-centering connecting piece comprises an inner sleeve, an outer sleeve, end plates, pretensioning rods and connectors, wherein the inner sleeve is sleeved with the outer sleeve, the end plates are located at the two ends of the sleeves, the pretensioning rods are arranged in the inner sleeve and anchored on the end plates, and the connectors are connected with the ends of the inner sleeve. Each friction energy consumption part comprises an inner friction plate, an outer friction plate and a friction gasket, wherein the inner friction plate is connected with the inner sleeve, the outer friction plate is connected with the lower side face of the outer sleeve, the friction gasket is arranged between the inner friction plate and the outer friction plate, and the sliding direction of the inner friction plate and the sliding direction of the outer friction plate are arranged in the axial direction of the outer sleeve. Column space is kept unchanged when the columns are laterally deformed, and the strength, the rigidity and the ductility of the structure can be flexibly and independently adjusted and controlled in the design process.

The invention relates to a small-size cantilever assembling bridge girder erection machine which is suitable for longspan bridges and is especially suitable for erecting a prefabricated section bridge of large span and small curvature bend. The section assembling bridge girder erection machine provides the following technical scheme that the section assembling bridge girder erection machine is characterized by comprising a rack with a bridge travelling channel, wherein the upper side and the lower side of the rack are respectively provided with a rail; the rail on the upper side is provided with a hoisting device; the lower-side rail is provided with a middle supporting leg and an assistant supporting leg; and two ends of the rack are respectively provided with a front supporting leg and a rear supporting leg. The invention aims to provide a small-size cantilever assembling bridge girder erection machine which is used for erecting the longspan bridges, the requirements on rigidity and lower cost of the bridge girder erection machine is met by the longspan bridges.

The invention relates to a self-resetting soft steel energy dissipating brace, which mainly consists of a brace component, a prestress device, an energy dissipating device and a plurality of fixed connecting components, wherein soft steel is connected with end plates through force transmission devices; one end of an inner sleeve is provided with a groove; a projected connecting plate can penetrate into the groove to be welded with the inner sleeve; an outer sleeve covers the inner sleeve; arc-shaped welding splicing plates are symmetrically welded on the outer surface of one end of the outer sleeve; the outwards extending part of each arc-shaped splicing plate is welded with a combined connecting plate; the end plates are positioned at two ends of the sleeves; resetting bars are arranged in the inner sleeve; and the two ends of the resetting bars are connected with the end plates through anchor devices. The self-resetting soft steel energy dissipating brace has the advantages that the soft steel is used to be stressed in the plane; greater initial rigidity is provided for a structure; the earthquake design level of no damage in minor earthquake is achieved; when medium or great earthquake occurs, the energy is dissipated through the plastic deformation of the soft steel; after the earthquake action stops, the soft steel is reset by using the recovery force of the resetting bars, so that the residue deformation of the structure is eliminated; and the earthquake design level of reparability after medium earthquake and falling prevention in great earthquake is achieved.

The invention discloses a hydraulic damper with a rigidity adjusting function. The hydraulic damper with the rigidity adjusting function comprises a left pin head (1), a right end cover (2), a cylinder body (3), a piston assembly (4), a piston rod (5), a left end cover (6), a left pin head (7), a first valve group (10), a second valve group (11), an oil storage box assembly (14) and a plurality of oil channels. According to the hydraulic damper with the rigidity adjusting function, a rigidity compensating device is arranged on a piston of the hydraulic damper; the requirement on the rigidity in a drawing direction of the hydraulic damper is met by a method of adjusting the structural rigidity of the hydraulic damper or replacing a work oil liquid, and then the requirement on the rigidity in a pressing direction of the hydraulic damper is met by adjusting the rigidity compensating device which is arranged on the piston of the hydraulic damper, so that the requirements on the rigidity in both drawing and pressing directions of the hydraulic damper are met. The hydraulic damper with the rigidity adjusting function is simple in structure and works reliably, can meet the requirements on the rigidity in both drawing and pressing directions of the hydraulic damper, and has a broad application prospect.

The invention relates to a fatigue test device for an outer front flap and joint test piece. The device comprises: an integral test bench; a pulley seat assembly supporting structure, an actuator cylinder fixing cross beam and a lever support supporting structure which are fixed on the test bench; a test piece supporting structure which is fixed on the test bench; a front joint loading mechanism which can apply a load to the front joint through a front joint loading actuator cylinder and a lever; and a rear joint loading mechanism which can apply a lateral load to a rear joint through a lateral loading actuator cylinder, can apply a course load to the rear joint through a course loading actuator cylinder, and can convert the applied vertical load into the course load to the rear joint through a vertical loading actuator cylinder and a pulley. According to the invention, the fatigue test function and loading requirements of the outer front flap and the joint can be met, effective test piece boundary condition simulation is carried out, and the rigidity and strength requirements of the test are met.

The invention discloses an integral type escalator supporting frame which comprises a left lateral plate, an intermediate connector and a right lateral plate. The left lateral plate and the right lateral plate are fixedly connected with each other through the intermediate connector; the left lateral plate and the right lateral plate respectively comprise an upper supporting section, an intermediate supporting section and a lower supporting section; the upper supporting section and the lower supporting section are fixedly connected with the intermediate supporting section; the upper supporting section, the intermediate supporting section and the lower supporting section respectively comprise two face plates which are fixedly connected with each other; and cross type strengthening ribbed plates are fixedly arranged on the inner sides of the face plates. The integral type escalator supporting frame has the advantages of being simple, novel and unique in structure; being uniform in stress distribution, effectively reducing the deformation degree and meeting the requirements for stiffness and stability of the escalator supporting frame; being adaptable to working conditions of severe environment with strong corrosion property; being convenient to assemble and capable of being assembled in site; increasing the single transporting volume and reducing the transportation cost.

A water pipe comprises a plastic pipe body and a vertical reinforced rib, wherein the plastic pipe body is reinforced by a steel mesh or a metal pore plate, and the vertical reinforced rib is integrated with the pipe body. Besides, a reinforced steel strip is composited in the reinforced rib. A special-shaped strip for manufacturing the water pipe comprises a strip base layer and a vertical reinforced rib portion which are integrated, a continuous steel mesh or a continuous metal pore plate reinforcing layer is composited in the strip base layer, and a steel strip is composited in the vertical reinforced rib portion. The method for manufacturing the water pipe includes the steps: extruding molten plastics into an upper forming cavity of a composite head and compositing the molten plastics with the steel strip in the upper forming cavity and the steel mesh or a metal pore plate in a middle forming cavity; and extruding molten plastics into a lower forming cavity of the composite head and compositing the molten plastics with the steel mesh or the metal pore plate in the middle forming cavity. The device for manufacturing the water pipe comprises the composite head including the upper forming cavity, the middle forming cavity and a lower forming cavity, wherein the upper forming cavity contains the steel strip, the middle forming cavity contains the steel mesh or the metal pore plate, the lower forming cavity forms the strip base layer, the upper forming cavity and the lower forming cavity of the composite head are the same in width and narrower than the steel mesh or the metal pore plate, and the width of the middle forming cavity is as same as that of the steel mesh or the metal pore plate.

The invention provides a device for testing interfacial mechanical characteristics of an earthen site anchoring slurry-substrate. The device comprises a loading mechanism and a sample preparation mechanism, wherein the sample preparation mechanism comprises a sample preparation base, a plurality of side wall blades, blade lock rings, a polished round core and a threaded core; a through hole is arranged in the center of the sample preparation base; the plurality of side wall blades are arranged at the upper part of the sample preparation base, are in an arc form and are enclosed into a hollow cylinder; the blade lock rings sleeve the outer sides of the blade lock rings respectively to hold the side wall blades; and the polished round core and a threaded core can be inserted into the through hole in the sample preparation base and the samples with different hole wall roughness can be manufactured separately. The invention further provides a method for testing the interfacial mechanical characteristics of the earthen site anchoring slurry-substrate.

The invention discloses a six-dimension anti-shock vibration isolation system and a manufacturing method thereof. The six-dimension anti-shock vibration isolation system comprises two parallel mechanisms and a damping mechanism, wherein the two parallel mechanisms are composed of supporting bodies, a middle suspension frame, a supporting platform and branch chains, and the damping mechanism is connected in the parallel mechanisms. By means the characteristic that singular configuration rigidity of the parallel mechanisms approximates to zero in a set degree-of-freedom direction, the direction of constraining force of the parallel mechanisms and the direction of damping force of dampers are distributed in six degrees of freedom spatially, the fact that the system has maximum damping in the minimum-rigidity degree-of-freedom direction is achieved, and shock and large impact in any degree-of-freedom direction are isolated.

The invention discloses a modulus type seamless expansion and contraction device and a construction method thereof, the device comprises a support mechanism and a telescopic mechanism, the telescopicmechanism comprises a corrugated steel sheet and a telescopic deformation assembly, the telescopic deformation assembly includes a side beam, a middle cross member and an elastoplastic expansion and contraction mechanism connecting the side cross member and the middle cross member, The lower end of the first side cross beam is provided with a fixed rubber damper, the lower end of the second side cross beam is provided with a fixed bearing damper, the lower end of the middle cross beam is provided with a sliding rubber damper, and the support mechanism comprises a first displacement box, a second displacement box, a support longitudinal beam, an upper U-shaped thin slide plate and a lower U-shaped thin slide plate; The method comprises the following steps: 1, mounting a support mechanism; 2. Installation of telescopic mechanism. The invention has the advantages of reasonable design, safer and more comfortable vehicle passing through the bridge expansion joint under the condition of satisfying the deformation of the bridge structure, and strong practicability.

The invention relates to a damping and noise-reducing wheel for rail transportation. The damping and noise-reducing wheel comprises a hub, a wheel center and a press ring, wherein the press ring is pressed on one side of the wheel center and fixed through threads, and a wheel center convex shoulder and a press ring convex shoulder constitute U-shaped space; the wheel center and the press ring are sleeved with the hub, an annular convex body is arranged in the center of an inner circular end surface of the hub, and an annular closed U-shaped groove is formed between the convex body and the U-shaped space; multiple U-shaped rubber bodies are annularly distributed in the U-shaped groove at equal intervals and are in interference fit with the U-shaped groove under the condition that the wheel is unloaded, and the interference magnitude interval is 6%-14% of the thickness of all positions of the U-shaped rubber bodies; the U-shaped rubber bodies are integrally formed, and included angles between the bottom surface and two side surfaces of each U-shaped rubber body are both 110 degrees. On the basis that the application performance of a traditional resilient wheel is guaranteed, vibration and noise are reduced obviously, unsprung mass of the wheel is reduced, meanwhile, the wheel is convenient to mount, dismount and maintain, heat dissipation is facilitated, and the disperse degree of performance is reduced, so that the service time of the wheel is prolonged.

The invention discloses a damping standard prefabricated trave-type floor structure system convenient to construct. The damping standard prefabricated trave-type floor structure system comprises prefabricated concrete floors, a main beam, a steel structure frame, a shock insulation and energy dissipation layer, steel check blocks and a flexible material filling layer. The multiple prefabricated concrete floors are connected into a whole in the modes such as welding and bolting, and integrity and continuity of the floor structure system are ensured; the trave-type steel structure frame bears and transmits the bending moment and shearing force, thus a floor structure has the enough strength, and meanwhile the stiffness requirement of the floor structure is met; wing plates are arranged on the prefabricated concrete floors and are in lap joint with H-shaped beams, and thus structural stability is improved; when a building is under the effect of an earthquake or meets the needs of certainshocking equipment, the arranged shock insulation and energy dissipation layer achieves the effects of shock insulation and energy dissipation, and transmitting of vibration form parts of structures to the other parts of structures is blocked; and the trave-type steel structure grid frame is fixed through bolts and the steel check blocks, and it is ensured that under the effect of vibration, the situation that the floor structure generates large displacement and then loses stability is avoided.

The invention discloses a novel column end node of a building structure, namely a column is connected with a floor slab by arranging two steel plates. The contact area of the two steel plates is smaller than the section area of a column end; the configured quantity of vertical steel bars of the column between the two steel plates is relatively less than that of the column end; the rigidity of the node and the bending resistance are lower than that of other parts of the column end; a control node area is an energy consumption area of the column, the column end is avoided from generating damage under the action of horizontal loading of earthquake or wind and the like and the safety of the whole column is protected, thus achieving the effect of strong column and weak beam of code requirements, improving the damage resistance of the building under the action of loading of earthquake and wind, and effectively protecting the safety of lives and property of people.

The invention relates to a building internal screen wall composite wall plate, in particular to an internal screen wall building energy-saving composite wall plate which is convenient for combination, comprising a building energy-saving heat-preservation screen wall multi-round hole or square hole EPS modules in the patent 200710072651.1; the module is formed by dies. The surfaces at two sides of the round hole straight plate module are provided with dovetail grooves; the surfaces at two sides of the square hole straight plate are smooth planes; the upper part and the lower part of the round hole rib and square hole rib of the straight plate module are correspondingly provided with convex arris and concave trough which are mutually matched with each other to form an inserted-connected structure; the left part and the right part thereof are provided with convex arris and concave trough which are matched with each other to form an inserted-connection structure. A plurality of round and square porous EPS heat preservation modules are assembled as composite screen wall plates in a building block type containing internal screen wall sandwich plate, asbestos fiber cement plate, fiber reinforced calcium silicate plates and straw plates according to the building modules. The building internal screen wall composite wall plate has the advantages of simple structure, light weight, low cost, high strength of wall surface, waterproofing and fireproofing, moth prevention, small land occupying, whole heat preservation, good sound insulation effect, and meeting the requirement of the internal screen walls.

The invention relates to the technical field of pipeline transportation machinery, and discloses an end hose, which is arranged at the tail end of a transportation pipeline and comprises a hose body. A feeding port of the hose body is communicated with a discharging port at the tail end of the transportation pipeline, at least part of the outer side of the hose body along the length direction is provided with an elastic container, and pressure inside the elastic container can be adjusted so that the stiffness of the end hose is adjusted. The pressure inside the elastic container is increased after media are filled into the elastic container, the surface tension of the elastic container can be increased along with the pressure, the stiffness of the elastic container and the hose body in the length direction is enhanced, the stiffness of the end hose can be adjusted by adjusting the pressure inside the elastic container to meet the requirements of different applications scenarios on the stiffness of the end hose, substantial swing of the end hose in transportation can be prevented, splashing of materials is decreased, material distribution is more convenient, and personal safety of operators is guaranteed. The invention further discloses an end hose stiffness control system and pipeline transportation machinery.

The invention relates to a power distribution cabinet column section bar and an assembling method of the power distribution cabinet column section bar and particularly relates to an assembled power distribution cabinet column section bar and an assembling method of the assembled power distribution cabinet column section bar. The assembled power distribution cabinet column section bar is manufactured by punching, bending and laminating plates; the assembled power distribution cabinet column section bar is characterized in that the cross section of the assembled power distribution cabinet column section bar is in a G shape, the assembled power distribution cabinet column section bar comprises four folding surfaces which are laminated, the first folding surface and the second folding surface are vertical, the second folding surface and the third folding surface are vertical and the third folding surface and the fourth folding surface are vertical. The assembled power distribution cabinet column section bar and the assembling method have the beneficial effects that the structure is scientific and reasonable, the anti-corrosion problems of the materials are resolved, the intensity and the rigidity of the cabinet can be ensured, the grounding protection grade is high, the assembled power distribution cabinet column section bar is safe and reliable, the operation is simple and convenient, more than 50% of the working period can be shortened, and more than 30% of the working time is saved, so that more than 8% of the production cost is reduced.

The invention provides a high-rigidity prestress loading framework structure for a large-scale three-dimensional physical model test. The high-rigidity prestress loading framework structure comprisesa base, an anti-deformation prestress loading framework assembly, a load exertion assembly and a model test specimen preparation and conveying assembly, wherein the anti-deformation prestress loadingframework assembly and the model test specimen preparation and conveying assembly are arranged on the base; the load exertion assembly is arranged on the anti-deformation prestress loading framework assembly; the anti-deformation prestress loading framework assembly comprises a middle framework, a front end framework and a back end framework; in a large-tonnage loading process, the self deformation of test equipment in the loading process can be effectively controlled; the test data credibility is improved; the screw bolt connection mode of a conventional loading framework is thoroughly avoided; the rigidity requirement of a hard rock similar material under the large-tonnage loading can be effectively met; the loading framework has higher automation degree; the artificial model test specimen preparation and conveying assembly is used for the first time; the precision detection during the test specimen preparation is met; the work intensity and the operation risk of experiment personnelcan be greatly reduced.

The invention relates to the technical field of a bridge structure, and particularly relates to a double-rectangular column type pier of a high speed railway. The double-rectangular column type pier of the high speed railway comprises two piers fixed on a base seat and straining beams located on the top portion of the piers, and two ends of the straining beams are fixed inside the two piers respectively. The double-rectangular column type pier of the high speed railway is reasonable in structure, simple in construction, convenient and fast to maintain, good in durability, the two piers with relative small mass are arranged below a supporting base of a bridge beam, and stress of the whole structure is clear. The straining beams are arranged below the tops of the piers, the requirement of a transverse stiffness of the high speed piers is met, and the straining beams can be used as an operation platform for checking and maintaining. The pier structure is clear in stress, the structure is reasonable, economy is good, requirements of the strength and the stiffness of the high speed piers are met, the construction is convenient and fast, the template design is simple, the construction process can move fast, and service life of the structure is assured.