30results about How to "Meet the force" patented technology

The invention relates to a rear-arranged rear-drive type three connection rod rear suspension frame rear axle structure for a motor. The structure comprises pivot journals, a motor, a speed changer, a driving shaft, a shock absorber, a pipe beam, a lower vertical arm and a push force rod. The pipe beam is 'n'-shaped, the middle portion of the pipe beam protrudes backwards, and a push force rod support and a single support are connected at the positions of the pipe beam close to the left end and the right end respectively in a welding mode. A semicircular groove recessed downwards is respectively arranged at one end of the push force rod support and the single support, and two ends of the pipe beam are embedded in the semicircular grooves in a welding mode. A spring seat is respectively arranged at one end of the push force support and the single support. The push force rod support is formed by welding two metal plates in a splicing mode, and the spring seats are arranged backward in a deviated mode relative to the axis position of the pipe beam. By means of arrangement and optimization of a traditional back axle and a similar bending pipe beam back axle structure, space arrangement requirements of the motor, the driving shaft and elastic elements can be met, and the requirements for stress transfer and strength can be met.

The invention discloses a railway tunnel bottom structure dynamic force model testing device and method. The device comprises a base, a base surrounding rock simulation structure, a tunnel bottom simulation structure, a static force loading device and a dynamic force loading device. The device can simulate static-dynamic load coupling effect of an invert arch structure, can simulate base surrounding rock condition and structure existing damage and can truly simulate actual service environment and stress characteristic of the invert arch structure. The railway tunnel bottom structure dynamic force model testing device and method has the advantages that the device is simple in structure and simple and convenient to operate.

The invention discloses a prefabricated high-strength concrete pier as well as a forming mold and a manufacturing method thereof. The bridge pier includes a pier body, a steel skeleton cage and a hoisting hole. The cross-sectional outer contour shape of the pier body is composed of more than four straight line segments and more than four arc segments, and all arc segments are located on the same circumference; The outer surface of the bottom of the pier is provided with concave-convex grooves; the hoisting holes are arranged along the circumference of the pier body and run through the pier body; there are more than two layers of steel skeleton cages inside the pier body, and the outermost layer of steel skeleton cages is shaped. On the inner side of the stirrup, the head end of the main bar is provided with a thread, and the tail end is provided with a sleeve with internal thread; the steel skeleton cage of the other layers is circular, and the main bar is arranged on the outside of the stirrup, and the head end and the tail end of the main bar are both There is a sleeve with internal thread; the steel skeleton cages of two adjacent layers are connected by connecting pieces. The prefabricated concrete pier of the invention has the advantages of excellent mechanical properties, high concrete strength grade, simple and convenient production process, and the like.

The invention discloses a core tube inverse superimposed underground diaphragm wall. The core tube inverse superimposed underground diaphragm wall comprises a core tube underground diaphragm wall body below a raft top elevation and a core tube underground diaphragm wall body above the raft top elevation. The underground diaphragm wall body below the raft top elevation comprises first advance width sections and first follow-up width sections. The underground diaphragm wall body above the raft top elevation comprises second advance width sections, second follow-up width sections, connecting beams, post-pouring gap sections arranged at the connecting positions of the second advance width sections and the second follow-up width sections and the connecting positions of the width sections and the connecting beams, and outer lining walls arranged at the outer sides of the width sections and the post-pouring gap sections. Wall body lacing wires and stirrups are pre-embedded in the two side edges of steel reinforcement cages of the second advance width sections and the second follow-up width sections respectively. Box irons are pre-embedded in the end portions of the two sides of the second advance width sections and the second follow-up width sections, and the box irons stretch into the underground diaphragm wall body below the raft top elevation. The invention further discloses a construction method for the core tube inverse superimposed underground diaphragm wall. According to the core tube inverse superimposed underground diaphragm wall, the outer lining walls are arranged additionally on the two sides of the underground diaphragm wall body above the raft top elevation, and the problem that an existing underground diaphragm wall is insufficient in carrying capacity is solved; in addition, two different underground diaphragm wall connecting modes are adopted, so that not only are requirements for stressing and constructing met, but also the shear performance of the underground diaphragm wall is guaranteed.

The invention provides a combined construction method of a cable-stayed bridge main beam and a counterweight foundation structure system of the construction method. The construction method comprises the following steps: designing a scaffold foundation, designing an excavation slope and step height of a dam at an edge slope region, designing the counterweight structure system of an nth block to a (n+m)th block of a mid-span, excavating the dam, wholly pouring the scaffold foundation and a counterweight foundation, carrying out symmetrical construction on a side-span and the mid-span of a main beam block by block by adopting a construction method for pouring by adopting a symmetrical hanging basket cantilever at two sides, and constructing an nth block to a (n+m)th block of the side-span and the like. The counterweight system provided by the invention comprises the scaffold foundation and the counterweight structure system. A combined construction technology of a main beam front-support-point hanging basket cantilever pouring method and a bracket cast-in-place method is adopted and two technologies are combined together, so that a side-span main beam which cannot meet hanging basket cantilever pouring is constructed; meanwhile, a mid-span main beam and the side-span main beam are symmetrically constructed and a stress state of a cable-stayed bridge is wholly met; a working period is shortened and the construction cost is reduced.

The invention discloses a joint treatment method for a fabricated building wall. The joint treatment method for the fabricated building wall comprises the following steps that (1) fabricated buildingwall components are machined; (2) lower fabricated building wall components are installed and constructed at a construction site; (3) upper fabricated building wall components are hoisted to the lowerfabricated building wall components; (4) pre-embedded protruding U-shaped steel bars of built-in fittings of the upper fabricated building wall components are horizontally connected with pre-embeddedU-shaped steel bars at the corresponding parts of adjacent upper fabricated building wall components; and (5) floors are connected by a cast-in-situ mode. A wall formed by the joint treatment methodis integral, and the joint treatment method for the fabricated building wall has the characteristics of simple and convenient fabrication, short construction period and high connection strength.

The invention discloses a connection structure of a railway bridge large-diameter pipe pile and a bearing platform. The connection structure is characterized by comprising a first flange plate (31), asecond flange plate (32) with preset steel sleeves (4), and an anchoring steel bar (5). The first flange plate (31) is welded and fixed on an end plate (2) at the top end of a tubular pile (1). A plurality of steel sleeves (4) are fixedly connected to the top surface of the second flange plate (32) in the circumferential direction. An anchoring steel bar (5) is fixedly connected in each steel sleeve (4). A bearing platform (6) is poured at the top of the pipe pile (1), and the whole first flange plate (31), the second flange plate (32), the steel sleeves (4), the anchoring steel bar (5) and one part of the top of the pipe pile (1) are connected with one another and embedded into the bearing platform. The connection mode ensures the integrity of the connection between the pile and the bearing platform, the horizontal force on the top of the pile can be better transmitted to the whole pile body, and the continuity of the stress is ensured.

The invention discloses a double-curved-surface aluminium plate suspended ceiling structure. The suspended ceiling structure comprises a hoop, a keel, panels and a three-dimensional adjusting mechanism, wherein the hoop is assembled with a roof truss of a building; the keel is assembled with the hoop, the keel comprises a plurality of main keels arranged in parallel with one another, and further comprises a plurality of secondary keels arranged in parallel with one another, the length direction of the main keels is perpendicular to the length direction of the secondary keels, and framed keels are further arranged on the lower parts of the main keels and the secondary keels; a plurality of panels are fixed to the lower parts of the framed keels; and the three-dimensional adjusting mechanism comprises vertical threaded rods connected with the main keels and the secondary keels, universal joints connected with the framed keels are arranged at the bottoms of the threaded rods, the universal joints are provided with threaded holes assembled with the threaded rods, and the universal joints are provided with the rotation freedom degree of the universal joints and the rotation freedom degree of the threaded rods around the axis of the threaded rods. According to the double-curved-surface aluminium plate suspended ceiling structure, the structural strength is high, on-site welding is eliminated, maintenance and disassembly are convenient, and when the effect of the curved surface top is needed to be created on the overall, the local panel can conveniently fine adjust the height and adaptively change the angle.

The invention discloses a design and a manufacturing method of a soft steel material with a damping anti-seismic device for a bridge, and relates to a steel formula. The detailed ratio which is designed in a formulaaccording to the mass percentage ratio of a component element of a steel type refers to the claim. The manufacturing method comprises the steps of smelting, continuous casting, round steel rolling, round steel finishing and finished product forging. A low-carbon aluminum killed steel with a specified chemical component range is prepared according to the formula and the manufacturingmethod, and meanwhile, element contents of P and Swhich influence plastic performance are strictly controlled, and the residual element contentsare controlledand thennot only tensile strength and yield strength of the soft steel are guaranteed to be within a certain strength range, but also the specific value of the yield strength and the tensile strength is not greater than 0.72, and a manufactured anti-seismic isolation device is excellent in equivalent damping ratio and low-cycle fatigue performance, so that the use requirements of stress and energy absorption and seismic resistance of a railway bridge comprehensive working condition are met.

The invention relates to a T-shaped node of a steel concrete combined pipe assembled by T-shaped steel and threaded sleeve pipe, which comprises a first steel concrete combined pipe and a second steelconcrete combined pipe, wherein an end steel plate is exposed at the rear end part of a second rectangular steel plate structure; an internal threaded sleeve is embedded in the front side of the first steel concrete combined pipe; the front half section of the internal threaded sleeve is in threaded connection with a connecting stud; the back side of the end steel plate is welded with two T-shaped steels. The back side of the web of each T-shaped steel is provided with a wrench operation hole corresponding to an installation hole. The front end of the connecting stud is threaded with a connecting nut in the operation hole of the wrench, the back side surface of the wing plate is pressed on the front side surface of the first steel concrete composite pipe by the connecting nut. The node can greatly improve the connection strength of T-shaped nodes between the two steel concrete combined pipes and ensure the reliability of the connection, combines cast-in-place casting and prefabrication, is convenient for construction, has high construction efficiency, can ensure the construction quality, and completely meets the use requirements of integral stress, energy saving, earthquake resistance and the like of modern assembled buildings.

The invention relates to a track beam for suspension type monorail traffic, which comprises a beam top plate, an open type beam bottom plate and a plurality of beam webs; the plate surfaces of the beam webs are parallel to the longitudinal direction of a track, and the upper ends and the lower ends are respectively connected with the beam top plate and the beam bottom plate; the beam webs are distributed on the two transverse sides of a beam bottom plate walking area, and the number of the beam webs on at least one side is not smaller than two so that a side box area can be formed. In addition, the invention further relates to a suspension type monorail traffic bridge which comprises a supporting structure and two sets of track beams, the two sets of track beams are connected through transverse tie beams, and the transverse tie beams are supported on the supporting structure. The side box type section is adopted, closed shear flow can be formed when the side box type section is stressed, the rigidity and structural strength of the track beam are remarkably improved, the driving comfort is greatly improved, and therefore the design span of the suspension type monorail can be increased, and the application range of suspension type monorail traffic is widened.

The invention relates to a method for constructing a tunnel located at a mountain slope toe. The method comprises the following step: firstly, pilot tunnel of an internal tunnel close to one side of a mountain slope toe is finished; a lower portion structure body of a parapet pile is constructed in the pilot tunnel, and a reinforcement cage is constructed by digging hole on the ground of the mountain slope toe, concrete is poured into the reinforcement cage, and the reinforcement cage and the lower portion structure body are combined into the parapet pile; construction of the internal tunnel is finished; soil body outside the parapet pile is dug out, and meanwhile the parapet pile is reinforced; and finally, the external tunnel construction is finished. The method has the advantages that the lower portion structure body of the parapet pile is constructed in the pilot tunnel so that hole digging depth on the ground of the mountain slope can be reduced, and construction risk is reduced; an upper portion horizontal supporting beam is arranged on the parapet pile and can serve as a preliminary bracing supporting point of an internal tunnel master cave arched part, so that one component has functions of two components; and the method is suitable for a tunnel with small interval, engineering construction land is saved, and traffic organization of a tunnel portal is benefited.

The invention discloses a threaded sleeve and T-shaped node of short U-shaped steel connection type steel concrete combined pipes. The threaded sleeve and the T-shaped node comprise a first steel concrete combined pipe and a second steel concrete combined pipe, wherein the first steel concrete combined pipe and the second steel concrete combined pipe are vertically arranged mutually; an end steelplate is exposed from the rear end of the second steel concrete combined pipe; an internal thread sleeve is embedded in a first concrete layer at the front side of the first steel concrete combined pipe; the front half section of the internal thread sleeve is in threaded connection with a connecting screw rod; the rear side surface of the end steel plate is welded to a U-shaped steel; installationholes are formed in the left side and right side of the U-shaped steel; and the front end of the connecting screw rod penetrates through the installation holes and connects the U-shaped steel integrally. The threaded sleeve and the T-shaped node can greatly improve the connection strength of the T-shaped node between the two steel concrete combined pipes, ensures the reliability of connection, combines a cast-in-place mode and prefabrication, is convenient for construction, has high construction efficiency, ensures the construction quality, and completely meets the use requirements of integral stress, energy saving, earthquake resistance and the like of modern assembly-type buildings.

The invention discloses an integral arched beam connection structure and construction method thereof for an upper supporting type steel tied arch bridge. The connection structure is used for connecting a main beam and a main arch, and comprises two groups of web plate assemblies, wherein the two groups of web plate assemblies are arranged at both sides of the main beam along the bridge direction; each group of web plate assembly comprises two integral web plates, wherein each integral web plate includes a transverse top edge, an arc-shaped bottom plate, a first vertical side edge, a second vertical side edge, a transverse middle edge, an inclined side edge and an arc edge; a main beam top plate is arranged between the two transverse top edges of the two groups of the web plate assemblies, and a main beam bottom plate is arranged between the two transverse middle edges of the two groups of the web plate assemblies, and main beam separation partitions are arranged between the main beam top plate and the main beam bottom plate at intervals; and a main arch top plate is arranged at the top ends of the inclined side edges of the web plate assemblies and perpendicular to the inclined side edges, and the main arch top plate extends upward into the main beam and is fixedly connected with the main bean partition plates. According to the integral arched beam connection structure of the upper supporting type steel tied arch bridge, the main beam and the main arch are connected through integral web plates, thus increasing structural integrity, guaranteeing smooth force transmission of the structure and improving the stability of the structure.

The invention discloses a quick butt joint fine-tuning device for an upper layer and a lower layer of steel-concrete combined pipes. The device comprises an upper rectangular flange and a lower rectangular flange which are horizontally arranged, a plurality of positioning plates are fixedly arranged on the inner wall of a rectangular hole in the upper rectangular flange, the lower side edge of each positioning plate extends into the rectangular hole of the lower rectangular flange, the lower side edge of each positioning plate is fixedly connected with a wedge-shaped clamping plate, the upperend of each wedge-shaped clamping plate is in contact with the lower side face of the lower rectangular flange, and the thickness of the lower side portion of each wedge-shaped clamping plate is smaller than that of the corresponding positioning plate. According to the invention, the butt joint speed between the upper and lower layers of the steel-concrete combined pipes can be greatly improved, atemporary fixing mode of buckles after butt joint is adopted, the upper layer steel-concrete combined pipe does not need to be hoisted all the time in the whole butt joint process of a crane, the operation efficiency of the crane is improved, the perpendicularity between the upper layer steel-concrete combined pipe and the lower layer steel-concrete combined pipe can be finely adjusted, the buttjoint quality and firmness are ensured, and the overall stress, energy conservation, earthquake resistance and other use requirements of modern fabricated buildings are completely met.

The invention provides an engine input end shafting bearing testing machine, which comprises a loading system arranged below the top of a rack; a dual-rotor system which is connected with the output end of the loading force of the loading system; an input end bearing test system which is in transmission connection with the rotor power unit, the input end bearing test system comprises: an output bearing seat; and a transmission shaft; the double-rotor system is loaded through the loading system, the double-rotor system is driven to swing, then the rotor power unit is driven to swing, a transmission shaft in transmission connection with the rotor power unit is subjected to the vertical swing action of the rotor power unit, and a sixth test bearing is subjected to radial force and axial force and rotates at a high speed at the same time, the performance test of the sixth test bearing of the input end bearing is completed while the test of the to-be-tested bearing pack is completed, and the device is compact in structure, high in test precision and high in test efficiency.

The invention belongs to the technical field of pick-up front driving axle housings, and particularly discloses a clamping-ring-type front driving axle housing assembly. The clamping-ring-type front driving axle housing assembly comprises a front driving axle housing and a clamping ring, and a clamping spring groove is machined in the clamping ring; an inner hole is formed in the front driving axle housing, an axle hole coaxial to the inner hole is formed in one end of the front driving axle housing, and one end of the outer part of the clamping ring is pressed into the axle hole through pressure. Compared with the prior art, the front driving axle housing assembly is low in machining difficulty, low in production cost and wide in applicability.

The invention relates to the field of marine propulsion, in particular to a measuring structure of the shaft rotating speed of a ship propeller under internal and external pressure. The measuring structure of the shaft rotating speed of the ship propeller under internal and external pressure comprises a closed cavity and a main shaft, wherein the closed cavity is composed of a bearing support andinternally provided with an annular contact type rotating speed sensor; and the main shaft penetrates through the annular contact type rotating speed sensor in a clearance fit mode, the main shaft isfurther connected with a set of bearing cavities, the bearing cavitiescompriseshaft sleeves, lip type seal rings, and bearings, O type seal ringsarearranged between the shaft sleeves and the main shaft,shaft couplings are furtherarranged at both ends of the main shaft, and a mechanical seal is connected with each inner sides of the shaft couplings. According to the measuring structure of the shaftrotating speed of the ship propeller under internal and external pressure,the measuring structure of the shaft rotating speedadopts the sealing designs of the mechanical seal, the O type seal, and the lip type seal and thus can bear bothpositivehydraulic pressure and negative hydraulic pressure, and the force and waterproof rating performance requirements of the high-precision rotating speed sensor are met.

The invention relates to a T-shaped node of a steel concrete combined pipe assembled by long channel steel and a threaded sleeve, which comprises a first steel concrete combined pipe and a second steel concrete combined pipe, wherein the rear end part of a second rectangular steel plate structure exposes an end steel plate; an internal threaded sleeve is embedded in the front side of the first steel concrete combined pipe; the front half section of the internal threaded sleeve is in threaded connection with a connecting screw rod; the rear side surface of the end steel plate is welded with thelong channel steel; the left side and right side of the long channel steel are provided with transparent mounting holes respectively, the mounting holes and the internal threaded sleeve are in one-to-one correspondence, the front end of a connecting screw rod passes through the mounting holes and is threaded with a connecting nut, the connecting nut presses the rear side of the channel steel on the front side surface of the first steel concrete combined pipe. According to the invention, the node can greatly improve the connection strength of T-shaped nodes between the two steel concrete combined pipes and ensure the reliability of connection, combines cast-in-place casting and prefabrication, is convenient for construction, has high construction efficiency, can ensure the construction quality, and completely meets the use requirements of integral stress, energy saving, earthquake resistance and the like of modern assembled buildings.

The invention relates to a T-shaped node of a steel concrete combined pipe with high shear strength, which comprises a first steel concrete combined pipe and a second steel concrete combined pipe, wherein an end steel plate is exposed at the rear end portion of a second rectangular steel plate structure; an internal threaded sleeve is embedded in the front side of the first steel concrete combinedpipe; the front half section of the internal threaded sleeve is in threaded connection with a connecting stud; the rear side of the end steel plate is welded with a vertically arranged grooved steelplate; the left side plate of the grooved steel plate and the rear side of the right side plate are welded with a connecting plate; a plurality of anti-shear rod pieces are arranged in the grooved steel plate and are connected to the first steel truss combined pipe; the anti-shear rod pieces are evenly arranged in the vertical direction and are located between the left and right internal threadedsleeve. The T-shaped node of the steel concrete combined pipe with high shear strength can greatly improve the connection strength of T-shaped node between the two steel concrete combined pipes and ensure the reliability of connection; cast-in-place casting and prefabrication are combined, construction is convenient, construction efficiency is high, thereby ensuring the construction quality, and completely meeting the use requirements of integral stress, energy saving, earthquake resistance and the like of modern assembled buildings.