51results about How to "Prevent buckling" patented technology

The invention provides a refrigerating and heating device which comprises a driver, a solid elastic clamping unit and a pipeline, the solid elastic clamping unit comprises a sleeve and a plurality of solid elastic clamping material plates stacked in the sleeve, each solid elastic clamping material plate comprises a through hole, and the through holes are stacked to form a flow cavity; the driver loads or unloads the multiple solid elastic clamping material plates to generate phase change or reverse phase change so as to generate heat or cold, the pipeline is communicated with the flow cavity, and media in the pipeline are subjected to heat exchange through the flow cavity so that the heat or the cold can be conveyed to the heating end or the refrigerating end. The solid elastic clamping material is arranged to be in a plate shape, in the loading and unloading process, even if a certain solid elastic clamping material plate cracks, the cracks cannot spread to other solid elastic clamping material plates, after the plate-shaped solid elastic clamping material is stacked, buckling deformation of the material can be avoided in the loading process, and the service life of the solid elastic clamping material is greatly prolonged.

The invention relates to the technical field of bar upsetting rough machining, in particular to a large height-diameter ratio titanium alloy upsetting blank manufacturing method. Comprising the following steps that S1, the upper end face and the lower end face of a bar are machined, so that the upper end face and the lower end face of the bar are perpendicular to the axis of the bar; s2, first heating number upsetting is carried out, and a first rod-shaped rough blank is obtained; s3, second heating number upsetting is carried out, and a second rod-shaped rough blank is obtained; s4, third heating number upsetting is conducted, and a third rod-shaped rough blank is obtained; s5, upsetting for the fourth heating number to obtain a cake-shaped rough blank; according to the method, the middle of the bar is deformed into the first bar-shaped rough blank through the first heating number of upsetting, the head of the first bar-shaped rough blank is deformed into the second bar-shaped rough blank through the second heating number of upsetting, and the tail of the second bar-shaped rough blank is deformed into the third bar-shaped rough blank through the third heating number of upsetting; and the third rod-shaped rough blank is upset into a cake-shaped rough blank through fourth heating number upsetting, different molds are designed for each heating number, and the situation that a bar with the large height-diameter ratio is folded, inclined and bent in an unstable mode in the upsetting process is avoided.

The invention discloses a polyimide hot-melt prepreg, a composite material and a preparation method of the polyimide hot-melt prepreg and the composite material, and belongs to the technical field of composite materials. The preparation method comprises the following steps: preparing a polyimide resin solution for impregnating fibers and self-adhering a surface layer from polyimide, a single solvent and a mixed solvent; preparing semi-solid polyimide prepreg for fiber impregnation and surface layer self-adhesion based on the two polyimide resin solutions, and then preparing an adhesive film and sequentially compounding with fiber cloth to obtain a fiber prepreg; and preparing the polyimide hot-melt prepreg based on the fiber prepreg. According to the preparation method disclosed by the invention, the reinforced fibers are fully infiltrated, and then the toughened and tackified resin layer is compounded on the surfaces of the impregnated reinforced fibers, so that the polyimide hot-melt prepreg with controllable resin content and good paving adhesiveness is obtained, and therefore, the low-porosity high-quality fiber reinforced composite material is prepared, the control difficulty of a forming process is greatly reduced, and the production efficiency is improved. The production efficiency is improved.

The invention relates to the field of ankle orthopedics, in particular to an ankle orthopedics and function training device which can adjust the angle according to the introversion of the front sole, adopts an inflatable fixing belt, is provided with an auxiliary training structure at the bottom, and can adjust the training intensity. Comprising a base, a supporting rod is fixedly arranged on the upper side of the base, a training structure is fixedly arranged on the top of the supporting rod, a flat plate is detachably installed on the upper side of the training structure, and an ankle-foot orthopedic structure which slides front and back and can be positioned is installed on the upper side of the flat plate; the ankle-foot orthopedic structure comprises a first fixing plate on the rear side, a second fixing plate which can rotate left and right and can be positioned is arranged on the front side of the first fixing plate, a front-back telescopic structure which can rotate along with the second fixing plate is arranged between the first fixing plate and the second fixing plate, and the first fixing plate and the second fixing plate are each of an arc-shaped structure with the left end and the right end tilting. Inflatable fixing structures are arranged on the first fixing plate and the second fixing plate respectively. The device is easy to operate, convenient to use and suitable for various patients.

The invention relates to the technical field of sandwich composite materials, and discloses a web-reinforced sandwich composite structure prepared by using a thermal expansion compression molding process and a method of the web-reinforced sandwich composite structure. Firstly, a light core (hard foam, balsa wood, honeycombs and the like) is cut into a required shape, an expandable foam prepreg film is cut according to a designed web structure, the interior and exterior of the web structure and the outer contour of the whole product are coated with expandable foam glue, then composite prepreg is laid on the product according to design requirements, and the composite prepreg is formed. And the web plate reinforced sandwich composite material structure is formed by utilizing internal expansion force generated by limited foaming in a thermal expansion foam pre-impregnated glue film mold. The maximum expansion force of the thermal expansion compression molding process can be maintained after the epoxy resin gel point, so that the performance of the web reinforced sandwich composite material is fully ensured, and the structural performance of the prepared web is enhanced.

The invention provides a forming method and device for a high-torsion-degree blade, and belongs to the technical field of pipe machining. The forming method comprises the steps that firstly, a tubular blank is filled with low-melting-point metal to form a solid pipe, then the solid pipe is extruded into a preformed blade with cambered surfaces on the two sides through a preforming device, projections of all the cross sections of the preformed blade coincide in the longitudinal direction, and the preformed blade is formed. The method comprises the following steps: pre-forming a blade, respectively clamping two longitudinal ends of the pre-formed blade by adopting a torsion forming device, enabling the two longitudinal ends to relatively rotate so as to twist the blade, correcting the shape of the twisted blade by adopting a shape correcting device, and finally melting the low-melting-point metal to obtain the high-torsion-degree blade. Compared with an existing forming process, the overall deformation process only comprises extrusion, torsion and shape correction, the forming process is simplified, the machining efficiency can be improved, the low-melting-point metal and the tubular blank are compounded from the beginning, and the material buckling problem in the subsequent forming process is avoided.

The invention discloses a steel structure module building self-resetting detachable maintenance structure and a construction method. The steel structure module building self-resetting detachable maintenance structure comprises square steel tube beams and square steel tube columns, and the square steel tube beams and the square steel tube columns are welded and fixed to form a steel framework; the corrugated steel plate wall is connected with the steel framework and is connected with the square steel pipe beam or the square steel pipe column on the corresponding side through a detachable connecting assembly; the structure further comprises self-resetting energy dissipation supporting assemblies arranged on the two opposite side faces of the steel framework, and the self-resetting energy dissipation supporting assemblies are provided with inhaul cables made of shape memory alloy. According to the structure, the supporting pieces of the corrugated steel plate walls and the supporting pieces of the square steel pipe columns / square steel pipe beams on the corresponding sides are connected in an assembly mounting mode to form detachable connecting assemblies, the detachable maintenance function of the steel structure module building is conveniently achieved, and the energy dissipation and self-reset functions are achieved through the self-reset energy dissipation supporting assemblies.

The invention relates to the technical field of deepwater grouting, and particularly discloses an orifice pipe imbedding method and an orifice pipe buoy device under the deepwater condition. The orifice pipe buoy device comprises two symmetrically arranged buoyancy mechanisms and further comprises a connecting piece; the connecting piece comprises a rotating piece, an annular seat, an arc-shaped fixing piece and an elastic clamping piece; the two arc-shaped fixing pieces are detachably connected and fixed to the steel pipe. The elastic clamping piece is arranged on the inner side of the arc-shaped fixing piece; a second inclined surface is formed on the upper outer wall of the elastic clamping piece; the annular seat is detachably connected with the arc-shaped fixing piece; the rotating piece is in threaded connection with the annular seat; a first inclined surface is arranged on the inner side of the lower part of the rotating part; when the rotating piece moves downwards, the elastic clamping piece is hooped at the joint of the two steel pipes; the buoyancy mechanisms are detachably fixed to the connecting pieces, and the two buoyancy mechanisms define an annular cylinder. The problems that an existing buoyancy device has large resistance under water flow, and the perpendicularity of an orifice pipe cannot be ensured can be solved.

The utility model relates to an anti-buckling device and a testing system for a fracture toughness test thin plate MT sample, the anti-buckling device comprises two anti-buckling assemblies, the two anti-buckling assemblies respectively comprise a pressing plate contacted with the MT sample and ear plates arranged at the two sides of the pressing plate, and the thin plate-shaped MT sample to be tested is clamped between the two pressing plates; a crack observation groove penetrating through the thickness direction of the pressing plate is formed in the middle of the pressing plate and is used for observing a prefabricated crack on an MT sample; the fastening assembly penetrates through the buckling-restrained assemblies in the thickness direction of the MT sample and is used for fastening and clamping the MT sample between the buckling-restrained assemblies; and the antifriction assembly is arranged between the anti-buckling assembly and the MT sample. Compared with the prior art, the device can effectively prevent the MT sample piece from buckling in the fracture toughness test process, and has the advantages of simplicity in installation, independent support, convenience in crack observation and the like.

The utility model relates to the field of postoperative care devices, in particular to an adjustable plastic hip joint fixing pillow which comprises a supporting mechanism, the supporting mechanism comprises a first supporting plate and a second supporting plate, and the first supporting plate and the second supporting plate are platy. The tops and the bottoms of the outer walls of the first supporting plate and the second supporting plate are fixedly connected with bearing plates, and the bearing plates are of elastic metal plate structures. Through the supporting mechanism, the distance between the two groups of bearing plates can be adjusted by adjusting the distance between the first supporting plate and the second supporting plate, so as to adapt to the distance between the legs of different patients; through the L-shaped first supporting plate, the situation that the hip joint of the patient bends by more than 90 degrees due to excessive curl-up of the patient is avoided.

The present invention provides a creep aging forming method for a variable thickness high rib component. The forming method comprises the following steps: placing a blank corresponding to the variable thickness high rib component on a mold forming space in a forming mold; the forming mold has two support baffles at both ends in its length direction; a first flexible pad is arranged in a first gap between the thick end of the blank and the corresponding support baffle; a clearance fit is formed between the thick end and the corresponding support baffle; covering the blank with a vacuum bag film, sealing the mold forming space, and evacuating to obtain a blank mold seal; placing the blank mold seal in an autoclave for creep aging treatment to obtain a variable thickness high rib component. The above forming method can prevent the buckling instability of ribs and cracking of ribs or skins caused by the limited movement of the blank in the mold, and helps to improve the forming integrity of the blank.

An electronic device is provided that includes a display panel having light-emitting pixels, a first protective layer on a rear surface of the display panel, and a first adhesive layer between the display panel and the first protective layer, where the first adhesive layer includes a non-conductive film (NCF).

The present application relates to a buckling-resistant support device and a buckling-resistant control method for a wind power tubular steel tower. The buckling-resistant support device for the wind power tubular steel tower includes: a sliding track circumferentially arranged around the inner wall of the wind power tubular steel tower; a support structure movably arranged on the sliding track, the support structure being capable of contacting the inner wall of the wind power tubular steel tower to provide support for the wind power tubular steel tower; and a control system control-connected to the support structure, the control system being capable of determining the buckling position of the wind power tubular steel tower according to the buckling data of the wind power tubular steel tower, and controlling the support structure to move along the sliding track so that the support structure abuts against the wind power tubular steel tower at the buckling position and provides support for the wind power tubular steel tower to resist buckling. It can reduce the manufacturing cost and difficulty of the wind power tubular steel tower. At the same time, it can adjust the support position of the support structure for the wind power tubular steel tower, enhance its adaptability to various load conditions, and improve the reliability of the wind power tubular steel tower.

The utility model discloses a fisheye needle applied to a welding-free terminal, which comprises a functional area, and the fisheye needle is sequentially divided into a terminal strength area, a retention area, a transition area, an insertion area and a pre-insertion area by the functional area along the insertion direction of the fisheye needle; the surface of the fisheye needle is concaved to form the inner concave pits, the inner concave pits span the transition area and the insertion area, the two inner concave pits extend in opposite directions, and a central rib sheet is formed between the bottom surfaces of the two inner concave pits; the width of the fisheye needle is gradually reduced from the transition area to the retention area; the width of the fisheye needle is gradually reduced from the insertion area to the pre-insertion area; and the width of the central rib sheet is gradually reduced from the center to the two ends. According to the fisheye needle, the design that the two oppositely-sunken inner pits are separated by the central rib sheet is adopted, so that the fisheye needle has both hardness and elasticity.

The invention discloses a power transmission tower diaphragm self-resetting reinforcing and reinforcing device and a working method, solves the problems that in the prior art, a power transmission tower reinforcing device does not have an energy consumption effect and is prone to generating unrecoverable deformation, and has the beneficial effects that the reinforcing strength of a power transmission tower is improved, energy is effectively consumed, and effective recovery can be achieved after the power transmission tower is stressed. According to the specific scheme, the power transmission tower diaphragm self-resetting reinforcing device comprises side joint components fixed to a power transmission tower main material, the side joint components are connected through energy consumption components, each energy consumption component comprises first connecting pieces connected with the side joint components, the first connecting pieces are connected through energy consumption parts, and the energy consumption parts are connected with the side joint components. Supporting pieces are arranged in the energy consumption parts and penetrate through the flexible pieces, the flexible pieces are stressed to deform so as to consume energy, the first connecting pieces on the two sides of the edge joint component are connected through second connecting pieces, the first connecting pieces and the second connecting pieces are each provided with an energy consumption reset part, and each energy consumption reset part comprises an elastic piece.

The present invention relates to an aircraft fuselage column assembly and a fuselage lower structure with the column assembly, belonging to the technical field of aircraft structures, comprising a corrugated C-shaped column, the corrugated C-shaped column comprising a corrugated telescopic section and straight sections arranged at both ends of the corrugated telescopic section, the straight section and the web and edge strip of the corrugated telescopic section are integrally formed, two corner pieces are respectively connected to the inner sides of the straight section, the corner piece is provided with an upper web of the corner piece, and the upper web of the corner piece is connected to the edge strips on both sides of the straight section. The present invention can make the corrugated telescopic section of the corrugated C-shaped column undergo telescopic deformation when the corrugated C-shaped column is under pressure, and at the same time, the upper web of the corner piece on the corner piece can pull the edge strips on both sides of the corrugated C-shaped column to prevent the corrugated C-shaped column from opening outwards when under pressure, thereby ensuring the stability of the corrugated C-shaped column when under pressure, so that the column assembly can stably absorb the impact energy generated by a crash, thereby improving the crashworthiness of the aircraft and the protection effect on the occupants during a crash.

The invention relates to a profile steel penetration-free type connecting joint based on UHPC composite beams and columns and a construction method. A left side precast beam and a right side precast beam of the connecting joint further comprise profile steel which is fixed to the corresponding precast beams in a concrete pouring mode to form an integral structure. One end of the profile steel comprises an upper flange plate, a lower flange plate and a middle web plate connected between the upper flange plate and the lower flange plate, the lower flange plate is located on the inner side of the precast beam concrete, the upper flange plate is located on the upper side of the precast beam concrete, and a vertical connecting steel plate is fixedly welded to the upper side of the upper flange plate; the vertical connecting steel plate is provided with a plurality of connecting holes arranged at intervals in the left-right direction, the connecting joint further comprises connecting ring ribs corresponding to the connecting holes, the left ends of the connecting ring ribs are installed in the corresponding connecting holes in the left side precast beam in a penetrating mode, and the right ends of the connecting ring ribs are installed in the corresponding connecting holes in the right side precast beam in a penetrating mode. According to the UHPC-based composite beam and column penetration-free type connecting joint and the construction method, the connecting strength between the beam and the column can be improved.

The utility model relates to building steel structure technical field especially relates to a kind of center support frame structure that avoids hole and is easily repaired, including frame beam, frame column and center support;Two parallel frame beams and two parallel frame columns constitute square frame, one frame beam includes durable section and vulnerable section, and durable section and vulnerable section are hinged connection;The center support includes support section and avoidance section, the support section is arranged obliquely, and support section is connected with the connecting point of frame beam and frame column, the avoidance section is connected with the connecting point of diagonal frame beam and frame column, and avoidance section is installed in the vulnerable section, for avoiding the hole in square frame. Through the utility model, the problem that traditional center support oblique support section hinders door and window hole and traffic streamline and the problem that it is difficult to repair after damage are solved.

The utility model discloses a wind -proof reinforcing device for steel structure building relates to building reinforcing technical field. The utility model discloses a crossbeam, two support columns are installed to the crossbeam bottom, it further includes: support mechanism, support mechanism installs in the crossbeam bottom, and support mechanism is used for supporting crossbeam, and the protection mechanism is installed to the left side and the right side of two support columns, and the protection mechanism is used for protecting support column. The utility model discloses through setting up support mechanism, specifically is first with fixed plate no.

The invention discloses a continuous oil pipe horizontal well uniform unblocking device and unblocking method and system, and the device comprises a hollow cleaning part which is communicated with a continuous oil pipe and is rotatably connected with the continuous oil pipe; a plurality of uniformly distributed jet holes are formed in the side wall of the cleaning piece; and an acute angle is formed between the ejection direction of any jet hole and the cleaning piece. The unblocking device is installed at the preset position of the coiled tubing; water pressure is input into the coiled tubing to drive the cleaning piece to rotate, the cleaning piece is kept in the middle state, and liquid is jetted out of the jet hole to clean a target. And controlling the coiled tubing to advance according to the preset track according to the preset speed. The cleaning piece is kept in the middle position, the continuous oil pipe is prevented from buckling in the horizontal well, smooth advancing of the continuous oil pipe is guaranteed, and meanwhile the cleaning efficiency is improved.

The invention belongs to the technical field of hydraulic engineering, and particularly relates to a hydraulic engineering steel pipe inner wall concrete pipe which comprises a steel pipe and a concrete pipe wall coaxially and fixedly connected to the outer side of the steel pipe. The front end and the tail end of the concrete pipe wall are respectively provided with an inserting part and a splicing part, and the splicing part of the previous concrete pipe wall is spliced and fixedly connected with the inserting part of the next concrete pipe wall; and the tail end of the front steel pipe is fixedly connected with the front end of the rear steel pipe. Compared with a traditional technical scheme, the combination of the steel pipe and the concrete pipe wall avoids the buckling problem of the steel pipe and the abrasion problem of an outer anticorrosive layer when the steel pipe is directly adopted for pipe jacking, the connectors can be conveniently aligned through the arrangement of the insertion part and the splicing part, the structure is simple, prefabrication is convenient, the construction period can be remarkably shortened, and the cost is reduced; and the pipeline bearing capacity and the pipeline durability are improved.

The present invention discloses a novel lattice composite shear wall, comprising T-shaped flanges, truss webs and tie bars, wherein the T-shaped flanges are arranged opposite to each other in groups of two and connected together by truss webs, and the tie bars are horizontally welded between two opposite T-shaped flanges in groups of two, and the two tie bars in each group are symmetrically welded in the cavities on both sides of the T-shaped flanges, and the two ends of the tie bars are bent and welded on the T-shaped flanges, and several groups of T-shaped flanges are welded together to form a shear wall body with a multi-zone lattice cavity structure. The present invention is a brand-new shear wall structure, which can avoid fire prevention measures and has good seismic resistance. At the same time, the low steel content greatly saves costs, and the construction is also very convenient, and it can be prefabricated in a factory or cast on site.

The invention relates to the technical field of electric power iron tower components, and discloses an anti-buckling reinforcing device and method for angle steel of a power transmission iron tower. The device comprises two connecting plates, two limiting plates, a spring, a guide plate and an extension plate. The connecting plate and the limiting plate are fixed on angle steel of a power transmission tower, an auxiliary groove is formed in the limiting plate, and the inner wall of the auxiliary groove is fixedly connected with one end of the spring; the other end of the spring is fixedly connected with the guide plate; in the two connecting plates, a first reinforcing plate is fixed to one connecting plate, a second reinforcing plate is fixed to the other connecting plate, an extending groove is formed in the second reinforcing plate, and reinforcing plates are fixedly connected to the first reinforcing plate and the second reinforcing plate. The device effectively restrains lateral deformation through surrounding angle steel, and buckling is prevented. And meanwhile, the extension plates and the extension grooves between the reinforcing plates can be flexibly adjusted according to working conditions and angle steel deformation, and the adaptability to angle steel of different lengths is improved.

The present invention discloses a combined connecting rod mechanism for synchronous folding of components, comprising a vertically arranged track, a lifting slide moving along the track, and two groups of combined connecting rods symmetrically arranged on both sides of the lifting slide; the track is embedded in the middle column of the prefabricated box-type room during operation; each group of combined connecting rods comprises a first connecting rod, a second connecting rod, a connecting plate and a third connecting rod; the connecting plate comprises an integrally arranged first connecting surface and a second connecting surface, the second connecting surface being higher than the first connecting surface; the first connecting surface is fixedly connected to the top plate to be folded on one side of the middle column of the prefabricated box-type room during operation. The present invention can realize the simultaneous folding of two components toward the middle component, and effectively avoids the collision between components and the stress concentration phenomenon at the connection between the components and the connecting rods.

The utility model relates to a hinge with a locking function and an access hole. The hinge comprises a first fixing frame, a second fixing frame, a first support arm and a second support arm, wherein the first fixing frame is static, one end of the first supporting arm and one end of the second supporting arm are both hinged to the first fixing frame, the other end of the first supporting arm and the other end of the second supporting arm are both hinged to the second fixing frame, and hinge points are a first hinge point and a second hinge point respectively; the clamping piece has a locking function and is hinged to the second fixing frame, and the hinging position is a third hinging point; the second supporting arm is provided with a clamping groove or a protruding point, and the clamping piece is provided with an adaptive structure used for clamping the groove or the protruding point. The hinge can be directly and fixedly connected with the keel frame, other accessories do not need to be additionally purchased, the access hole meeting the requirement can be manufactured by remaining materials of the suspended ceiling panel and the suspended ceiling keel, and the material cost and the labor cost are saved.

The application discloses a kind of hollow plate box automation multi-face welding device, it is related to automatic welding technical field, including welding table, the upper end of welding table is fixedly installed with protective cover, a plurality of evenly distributed guide posts are fixedly installed between welding table and protective cover, welding assembly is jointly installed on guide post, outer shaping assembly is fixedly installed at the center of the upper end of welding table, inner shaping assembly is fixedly installed at the center of outer shaping assembly, outer shaping assembly and inner shaping assembly are used to position the inside and outside of the side plate of hollow plate box to be welded respectively, magnetostrictive assembly for abutting against the side plate of hollow plate box from inside is slidably installed on the four sides of inner shaping assembly, the present application is positioned by external vacuum suction and internal electromagnetic tensioning, elastic retreat and thermal self-locking cooperation suppress the thermal deformation that can appear in welding process, four laser welding heads synchronous welding improve efficiency, realize the high-precision, low deformation automatic welding of hollow plate box.

The invention discloses an empty steel pipe axial compression test device for performing internal local lateral pressurization based on a water bag. The empty steel pipe axial compression test device comprises a loading base plate, a pressurization system and a supporting mechanism, the supporting mechanism comprises a square steel pipe, an upper end plate, a lower end plate and a water bag, the upper end plate and the lower end plate are arranged at the upper end and the lower end of the square steel pipe respectively, and the loading base plate is fixed to the upper end plate; steel plate supporting plates are arranged on the four inner side walls of the square steel pipe, water bag separation arc-shaped plates are fixed to the sides, away from the inner side walls of the square steel pipe, of the steel plate supporting plates, the inner side walls of the square steel pipe, the water bag separation arc-shaped plates, the upper end plate and the lower end plate form a pressurization cavity used for containing a water bag, and the water bag is placed in the pressurization cavity. The water bag is connected with the pressurizing system; when the water bag is pressurized, the water bag abuts against the four corner angle parts of the square steel pipe, and a gap is formed between the upper end of the water bag and the upper end plate. According to the invention, experimental data can be obtained more accurately, and verification is provided for theoretical models and numerical simulation.

The application belongs to the field of new material testing equipment, and the composite material damage residual strength testing device has a base assembly with a bottom plate, a clamping assembly arranged above the bottom plate, and a bottom of a sample to be tested clamped on the clamping assembly; a side support assembly is installed above the bottom plate and has at least two split side support plate assemblies, the sample to be tested is installed between the two split side support plate assemblies and clamped; an anti-instability assembly is installed opposite to the outside of the two side support plate assemblies and located between the two side support plate assemblies, and the two ends are connected with the two side support plate assemblies, respectively, the sample to be tested is arranged in an area enclosed by the anti-instability assembly and the side support plate assembly to prevent the sample to be tested from buckling during compression; and an upper pressing plate assembly is installed above the side support assembly to position and clamp the end surface of the sample to be tested. The device is convenient to install and operate and has a wide range of applications.

The utility model discloses a lower bearing type plane bending steel arch bridge beam structure, including steel roof, the top surface fixed mounting of steel roof has arch rib, the surface fixed mounting of arch rib has the reinforcing bar, the bottom surface fixed mounting of steel roof has the support beam, the surface of support beam has seted up the sliding slot, the surface fixed mounting of support beam has the fixed block, the inside plug -in of fixed block has the lead screw, the top fixed mounting of lead screw has the support block, the inside sliding connection of fixed block has the moving block, the side surface swing joint of moving block has the support rod, the bottom fixed mounting of support rod has the sliding block, through adjustable bottom support structure to strengthen the stability and adaptability of bridge, and the sliding slot of support beam bottom surface sets up and cooperates with the sliding block, and the support rod is allowed to move flexibly according to the stress condition to distribute load, and the height of support block can be adjusted to the lead screw and moving block, so that its top end is always in close contact with steel roof bottom surface, provides the continuous stable vertical support.