76results about How to "The structure is evenly stressed" patented technology

Disclosed are a tower crane mast and a tower crane containing the tower crane mast. The tower crane mast comprises: a cuboid frame formed of four main chords (A, B, C, D) and a main beam (30); a first elevation mechanism (10) disposed between two main chords (A, B) at one side of the cuboid frame. The four main chords (A, B, C, D) and the main beam (30) are connected in a separable and detachable manner. The tower crane mast can be detached into separate chord or beam structures during transportation, which facilitates installation and placement and effective use of space, so as to reduce unnecessary space occupation and lower the transportation cost.

The invention relates to a reinforced cement machine-made board with a three-dimensional cavity fiber structure and a production method of the board, and particularly relates to a novel building material and product, which adopt a mechanical production process, are high in strength, light in weight and abundant in decorative effect, and are realized by forming a cavity structure by three-dimensional cavity connection bodies and compounding and filling a high-performance anti-cracking cement base material. A product comprises a bottom layer, a three-dimensional fiber cavity layer and a decorative surface layer, wherein the decorative surface layer is made of decorative surface layer mortar; the decorative surface layer is arranged at the upper part of the three-dimensional fiber cavity layer; the decorative surface layer is connected with the three-dimensional fiber cavity layer; the three-dimensional fiber cavity layer is formed by filling high-performance anti-cracking cement slurry into the three-dimensional cavity connection bodies; and the three-dimensional fiber cavity layer is connected with the bottom layer and the bottom layer is made of the high-performance anti-cracking cement slurry. The product is mainly applied to outer wall decoration and indoor engineering construction of buildings, and constructions of roads, bridges and the like with high requirements on the strength and the durability of the cement base material.

The invention relates to a single-cylinder bolt stretching device and a crane. The single-cylinder bolt stretching device is applied to a stretching arm system, and comprises a stretching oil cylinder, a double-arm bolt structure, an arm bolt pulling and inserting mechanism, cylinder bolt structures and cylinder bolt oil cylinders, wherein the stretching oil cylinder is used for driving each stretching arm in a stretching arm system to do stretching motion relative to a basic arm; the double-arm bolt structure is arranged on two sides at the tail part of each stretching arm, and is used for locking and unlocking the stretching arms; the arm bolt pulling and inserting mechanism is arranged on the cylinder barrel of the stretching oil cylinder and is used for pulling and inserting the double-arm bolt structure; and the cylinder bolt structures and the cylinder bolt oil cylinders are arranged on the cylinder barrel of the stretching oil cylinder and are used for locking and unlocking the cylinder barrel of the stretching oil cylinder and each stretching arm. According to the invention, the double-arm bolt structures arranged at two sides of the tail part of each stretching arm are adopted, compared with the existing upper arm bolt scheme, the double-arm bolt structures provided by the invention are arranged at two sides of the stretching arm, are more uniform in stress than the structure arranged on the upper side of a suspending arm, so that the influences of flexibility deformation of a crane arm on the bolt hole position and the arm bolt stress situation are reduced.

The invention discloses an underpinning and reinforcing structure for a seismic isolation bearing of an existing brick-concrete structure. The underpinning and reinforcing structure comprises an enlarged foundation arranged on the original foundation, a lower supporting pier arranged on the upper part of the enlarged foundation, a seismic isolation pad lower embedded board arranged on the upper part of the lower supporting pier, a seismic isolation pad arranged on the upper part of the seismic isolation pad lower embedded board, a seismic isolation pad upper embedded board arranged on the upper part of the seismic isolation pad, double supporting beams arranged on the upper part of the seismic isolation pad upper embedded board and a seismic isolation board arranged on the upper parts of the double supporting beams; pin keys are further arranged inside the double supporting beams; and the double supporting beams, the pin keys and the seismic isolation board are of an integrated type poured and molded structure. The invention further provides a construction method for the underpinning and reinforcing structure for the seismic isolation bearing of the existing brick-concrete structure. In this way, the underpinning and reinforcing structure is stable in structure, is high in safety, and has relatively good seismic resistance; besides, the mounting and constructing are relatively convenient, and the efficiency is high.

The invention discloses a reinforced plasterboard and a preparation method thereof. The plasterboard comprises a plaster base material layer, and a three-dimensional reinforced fiber fabric embedded into the plaster base material layer, wherein the three-dimensional reinforced fiber fabric consists of an upper layer, an intermediate layer and a lower layer; the upper layer and the lower layer are meshed plate fiber layers; the intermediate layer refers to an 8-shaped fiber framework; and the upper and lower ends of the 8-shaped fiber framework are respectively connected with the plate fiber layers on the upper and lower layers. The three-dimensional reinforced fiber fabric serves as a product reinforcement material, and three-dimensional directional enhancement of glass fibers is structurally realized, so that the plate structure is uniform in stress. Compared with gridding cloth layout or short fiber injection and pouring and other processes, the method has the advantages that the breaking strength and compressive strength are greatly improved, and a mechanical guarantee is provided for production of large-specification / size plates. The preparation method disclosed by the invention is simple in process, and the obtained product is good in performance.

The invention mainly discloses an integrated floor module and an assembling method thereof. The integrated floor module comprises a structure module of floor. Equipment system modules, ceiling joists and suspended ceiling boards are sequentially assembled on the lower surface of the structure module from inside to outside; a profiled steel sheet is installed on the upper surface of the structure module, concrete is poured to the upper surface of the profiled steel sheet on site, a floor surface layer is laid on the surface of the concrete, and a finished product of whole floor system is formed. The assembling method includes the steps that the floor system is prefabricated in a factory firstly, then the finished product of the floor system is carried to a construction site, and the floor system is quickly connected with on-site square columns. According to the integrated floor module and the assembling method, modular production of the floor system is achieved, convenience is brought to quick assembly, and industrialization, assembly and standardization of building industry are propelled.

The invention discloses an ink-jet printing trolley and an ink-jet printing device. The ink-jet printing trolley comprises a trolley support assembly, an ink-jet printing module, a curing module, a spray head control module and an ink supply device. The trolley support assembly is slidably arranged on an equipment cross beam for bearing the ink-jet printing module, the curing module, the spray head control module and the ink supply device. The ink-jet printing module is sued for printing images and texts on a printing medium. The curing module is used for curing the printed images and texts. The spray head control module is used for controlling the ink-jet printing module to print. The ink supply device is used for supplying ink to the ink-jet printing module. Relatively more spray heads can be loaded conveniently and rapidly, so that a relatively wider circuit board can be covered by single scanning of the trolley. The quantity of the arranged spray heads can be changed according to actual demand, and the printing demands on different width circuit boards can be met. The ink-jet printing trolley is balanced in structural stress and stable to operate, and can guarantee printing with high efficiency and high quality. The modules are conveniently detached and maintained at ordinary time.

The invention mainly discloses an assembling method of floor structural modules. Each floor structural module comprises a plurality of main beams, secondary beams and a plurality of box-type components, the main beams are connected to form an outer frame with the box-type components as unit connecting points, and the secondary beams are arranged in the outer frame defined by the main beams. The assembling method includes the steps that first, the structural modules are prefabricated in a factory; second, the finished structural modules are carried to a construction site, and the structural modules and on-site square columns are fast assembled and connected. According to the method, structural units for the floor modules are formed in the factory, welding is reduced, the quality of machining in the factory is improved, and the industrial degree of steel components is improved.

The invention provides a four-link tension string for a + / -800KV heavy ice area, belonging to fitting strings for construction of transmission lines. The four-link tension string comprises two hanging point fittings connected with a tower, wherein after being connected with the same fitting, each hanging point fitting is connected at the left end of a first yoke plate by a bolt; the right end of the first yoke plate is connected with two insulators by a ball head hanging ring; two of the four insulators are connected on a second yoke plate and the other two insulators are connected on the other second yoke plate; the two second yoke plates are respectively connected with a combined yoke plate by a right-angle hung plate; an equalizing ring is arranged on two insulators; the equalizing ring is in open type or two-leg split type; the combined yoke plate is formed by connecting a two-variable four-link plate, two right-angle hung plates and two one-variable two-link plates by bolts; and two shielding rings are fixed at the upper and lower ends of the two-variable four-link plate by brackets. The four-link tension string has the characteristics of convenience for installation of the equalizing ring, stable structure and high strength.

The invention provides a special-shaped-cross-section hot-rolled steel plate coil and a manufacturing method thereof. The cross section of the special-shaped-cross-section hot-rolled steel plate coil is composed of a base plate (1), a middle double-side thickening region (2), an end double-side thickening region (3) and an inner arc r1, wherein the lengthwise strength of the special-shaped-cross-section hot-rolled steel plate coil can reach 6-600 meters; the middle double-side thickening region (2) and the end double-side thickening region (3) are horizontally connected by the base plate (1) to form an integral body; and the middle double-side thickening region (2) and the end double-side thickening region (3) transit to the base plate (1) through the inner arc r1. The special-shaped-cross-section hot-rolled steel plate coil is prepared by finish rolling by using four-roller composite-orifice rollers and a matched technique. The special-shaped-cross-section hot-rolled steel plate coil is used for producing cold-roll-formed U rib steel, solves the technical problems of welding spot cracking and irrational structural strength caused by insufficient welding thickness on the two ends of the existing uniform-thickness U rib and reduced thickness of the bent angle part, enhances the stability and safety of the bridge, and lowers the manufacturing and maintenance cost of the bridge.

The invention provides a hard rock cutterhead and a cantilever heading machine comprising the same. The hard rock cutterhead comprises a conical cutterhead main structure; the cutterhead main structure comprises a head, spokes and a flange; the head is connected with the spokes, the spokes are connected with the flange, and the head and the spokes are provided with detachable cutters. The cantilever heading machine comprises the hard rock cutterhead. The hard rock cutterhead and the cantilever heading machine comprising the same have the advantages that the stress of the cutterhead structure is more uniform, the deformation resistance and break resistance are high, and the high-thrust high-rotation-speed excavating working condition can be borne; the cutterhead is formed by machining a complete plate or welding steel plates, and the overall strength and stiffness are better; the cutters adopt the form that end covers are located on cutter seat installation surfaces, and the rock breaking efficiency can be improved; a cutterhead center hobbing cutter can be drawn back when the cutterhead conducts swing cutting, and eccentric abrasion, cutting edge breaking and other abnormal damageoccurring to the center hobbing cutter are effectively avoided; hobbing cutters and toothed cutters are subjected to interchange installing, soft soil excavation can be achieved, and in addition, hardrock can be subjected to expanding excavation; and the cutterhead swings up and down as well as leftwards and rightwards, and round and special-shaped fracture surfaces can be excavated.

The utility model relates to a pay-off pulley for an unmanned aerial vehicle (UAV) wire mounting system, which comprises a frame body, a guide rope guide rail and a plurality of pulleys. The circumferential surface of each pulley is provided with an arc-shaped groove and has a common support shaft to form a pulley set, and two ends of the support shaft are respectively connected to the frame body. The frame body comprises a first side portion and a second side portion, wherein the first side portion and the second side portion are located on both sides of the axial direction of the pulley block, respectively; An opening is provided on the second side portion, and the opening divides the second side portion into two parts, namely a first part of the second side portion and a second part ofthe second side portion, wherein the first part of the second side portion is positioned above the opening and the second part of the second side portion is positioned below the opening, and the first part of the second side portion and the second part of the second side portion are connected by a snap connection assembly. The pay-off pulley with the structure is reliable in installation and convenient in disassembly. The pay-off pulley subtracts the manpower, and cooperates with the unmanned aerial vehicle to save time and labor, improves the construction efficiency, and is suitable for thecurrent electric power industry.

The invention relates to a municipal inspection well and a back excavation construction method thereof. The municipal inspection well is composed of a well cover, a well seat and a well barrel. The municipal inspection well is located in a road face structural layer, the road face structural layer comprises a road face bottom base layer and a road face compaction structure which are arranged from bottom to top sequentially. A ring beam is arranged on the well barrel, the bottom of the well seat is fixed to the ring beam through an expansion bolt, and the well cover is arranged on the well seat; concrete is poured between the inspection well and the road face compaction structure as well as between the inspection well and the road face bottom base layer, a rebar framework is pre-buried in the concrete at the ring beam, a glass fiber soil engineering grid layer and an asphalt concrete layer are arranged above the concrete and the road face compaction structure from bottom to top sequentially, the asphalt concrete layer is flush with the upper surface of the well cover, and the bottom of the concrete is 50-55 cm deeper than the bottom of the road face bottom base layer. The municipal inspection well has the characteristics of being safe, suitable and the like, has good popularized and practical values, and can produce good economic benefits after being widely applied and promoted.

Ankle joint rehabilitation traction equipment with adjustable joint angles comprises an external fixation shank tying band support, a right-side lead screw nut mounting block, a right-side lead screw nut mounting pin, a right-side lead screw nut rod, a right-side lead screw rod, a right-side universal coupling, a right-side rotating hand wheel, a right-side drive bevel gear, a right-side gear shaft mounting block, a gear shaft, a left-side gear shaft mounting block, a left-side drive bevel gear, a left-side rotating hand wheel, a planta pedis mounting support, a lower reed fixing rivet, a connection reed, an upper reed fixing rivet, a left-side lead screw nut mounting block, a left-side lead screw nut mounting pin, a left-side lead screw nut rod, a left-side lead screw rod, a left-side universal coupling, a right-side gear shaft mounting block screw, a left-side gear shaft mounting block screw, a left-side gear shaft bearing, a right-side gear shaft bearing and tying bands, wherein the external fixation shank tying band support and the planta pedis mounting support are located above and below the structure respectively. The joint angles of lower limbs and planta pedis ankle joints are adjusted through rotation of the left and right hand wheels, and rehabilitation traction training is realized.

The invention discloses a high-pressure reverse-blowing ash-removing bag filter system, which is composed of a high-pressure blowing ash-removing system, an upper box body cover, an ash-removing nozzle, an upper box body, a clean air discharging pipe, a filtering cloth bag, a filter body, an ash-containing air inlet pipe, a support, an ash-collecting hopper, an ash-unloading fastener, and a lower box body. The filter body has a ball shaped structure, and thus has the characteristics of uniform stress, good anti-detonating ability, and compact structure; the process of reverse blowing is carried out by adopting a high-pressure blowing ash-removing system, thus the ash can be effectively removed, and the service life of the cloth bag can be prolonged; the system has the characteristics of strong ash-removing performance, high ash-collecting efficiency, low discharge density, simple maintenance, and low energy consumption, and achieves the goal of safe ash-removing.

The invention relates to the technical field of bridge construction and in particular relates to a steel pipe arch bridge cable-stay connecting device and connecting method. The steel pipe arch bridgecable-stay connecting device disclosed by the invention comprises a cable-stay connector connected with a cable stay, wherein a hoisting component is connected onto a steel pipe arch and is hinged with the cable-stay connector by virtue of a rotating pin. According to the connecting device, the cable-stay connector is hinged onto the steel pipe arch, so that the cable-stay connector can adapt tothe angle change of the cable-stay so as to rotate when the angle of the cable-stay is changed. Therefore, the uniform stress of the cable-stay connector is ensured, the cable-stay connector is alwayspositioned in a relatively free state, and normal installation and quality safety of the steel pipe arch bridge is further ensured.

The invention relates to a 3D printed fang implant with a multisection structure. The fang implant is primarily formed by means of a 3D laser melting method. The implant comprises a lower threaded section, a middle body section and an upper threaded section, wherein the middle body section comprises a solid cylinder and a honeycomb shell structure wrapping the cylindrical surface of the solid cylinder. As the honeycomb shell structure is adopted, the elastic modulus of the implant is reduced effectively, so that stress concentration and stress shield generated to tissue interface of a strong skeleton which is implanted are reduced, the implanting compatibility is improved, a channel is provided for later surface treatment, a good space is provided for bone cell proliferation, and the implant is stable in structure and uniform to stress, and avoids fatigue breakage after long-term use as a result of local stress concentration, and therefore, the service life of the implant is prolongedby three times. As a design of different threaded sections is adopted, the cutting performance and the bone grabbing performance of the implant are improved. The implant has a self-locking effect, sothat the implant stability is improved. By means of integrated printed forming, the processing course is saved, and the cost is lowered.

The invention provides an anchor rod lattice slope protection construction method based on a tunnel underground excavation section permanent heading slope. The anchor rod lattice slope protection construction method comprises the following steps of S1, surveying and setting out, specifically, anchor rod construction is completed, the slope ratio and the like of an excavated slope body are manuallyfinished and meet requirements, and then the position of a lattice beam and the construction initial range are surveyed; S2, slope surface grooving, specifically, a groove is excavated manually according to the position and size of the lattice beam measured by a measurer, the groove is excavated by 20 cm outside structural lines of the two sides of the lattice beam, and a formwork and a supporting structure can be installed conveniently; S3, reinforcing steel bars machining and binding; S4, formwork installing, specifically, bamboo plywood with the thickness of 15 mm is adopted as the formwork to be spliced according to the design size, square timber with the length of 5 * 10 cm is adopted as straps, and the surface of the formwork is cleared up and brushed with a release agent; and S5, concrete pouring. According to the anchor rod lattice slope protection construction method, the anchor rod lattice is arranged stably, casting bodies are not prone to deformation, all structures of theanchor rod lattice can be stressed evenly, and the slope maintenance stability is good.

The invention discloses an underpinning and reinforcing structure for a seismic isolation bearing of an existing brick-concrete structure. The underpinning and reinforcing structure comprises an enlarged foundation arranged on the original foundation, a lower supporting pier arranged on the upper part of the enlarged foundation, a seismic isolation pad lower embedded board arranged on the upper part of the lower supporting pier, a seismic isolation pad arranged on the upper part of the seismic isolation pad lower embedded board, a seismic isolation pad upper embedded board arranged on the upper part of the seismic isolation pad, double supporting beams arranged on the upper part of the seismic isolation pad upper embedded board and a seismic isolation board arranged on the upper parts of the double supporting beams; pin keys are further arranged inside the double supporting beams; and the double supporting beams, the pin keys and the seismic isolation board are of an integrated type poured and molded structure. The invention further provides a construction method for the underpinning and reinforcing structure for the seismic isolation bearing of the existing brick-concrete structure. In this way, the underpinning and reinforcing structure is stable in structure, is high in safety, and has relatively good seismic resistance; besides, the mounting and constructing are relatively convenient, and the efficiency is high.

The invention relates to the technical field of relays, and particularly relates to an electromagnetic relay with a button buffer mechanism. The electromagnetic relay comprises a shell, a button assembly and a contact system positioned in the shell, the shell is provided with a mounting seat for mounting the button assembly, the button assembly comprises a button and an elastic piece matched with the button, the bottom of the button is provided with a buffer key rod, and the buffer key rod can extend into the shell to be in movable contact with an armature so that a contact system is connected or disconnected, and the test work of a load end circuit of the electromagnetic relay is completed. The buffer key rod is provided with an action end which is in contact with the armature so that the buffer key rod can buffer and disperse the pressure generated by the action end and the armature which are pressed against each other. And the failure of the detection function of the on-off of the circuit of the electromagnetic relay caused by the breakage of the button due to overlarge and concentrated pressure is prevented.

The invention provides a four-link tension string for a + / -800KV heavy ice area, belonging to fitting strings for construction of transmission lines. The four-link tension string comprises two hanging point fittings connected with a tower, wherein after being connected with the same fitting, each hanging point fitting is connected at the left end of a first yoke plate by a bolt; the right end of the first yoke plate is connected with two insulators by a ball head hanging ring; two of the four insulators are connected on a second yoke plate and the other two insulators are connected on the other second yoke plate; the two second yoke plates are respectively connected with a combined yoke plate by a right-angle hung plate; an equalizing ring is arranged on two insulators; the equalizing ring is in open type or two-leg split type; the combined yoke plate is formed by connecting a two-variable four-link plate, two right-angle hung plates and two one-variable two-link plates by bolts; and two shielding rings are fixed at the upper and lower ends of the two-variable four-link plate by brackets. The four-link tension string has the characteristics of convenience for installation of the equalizing ring, stable structure and high strength.

The invention belongs to the technical field of articles of daily use, and relates to a cookware handle, in particular to a detachable cookware handle which is convenient to detach, firm in connection and not prone to damage. The detachable cookware handle comprises a movable clamping piece, a rotary grooved wheel, a handle, a rotary stem and a screw. The movable clamping piece is provided with a first protrusion and a first sliding chute, and the first protrusion and the first sliding chute are located on the same straight line. A groove is formed in the handle. The rotary grooved wheel is provided with a second sliding chute, second protrusions and a through hole, and the screw penetrates through the through hole and is in screwed connection with the bottom of the groove. The first sliding chute is in sliding fit with the screw, the first protrusion is in sliding fit with the second sliding chute, and the second sliding chute is arc. The radius of curvature of the arc second sliding chute gradually increases from the position close to the first protrusion to the position far away from the first protrusion. The arc center distance difference of the two ends of the arc second sliding chute is equal to the length of the first sliding chute. The rotary stem is provided with a plurality of second clamp grooves, and the second clamp grooves are connected with the second protrusions in a clamping mode.

The invention discloses a steel pipe truss prestress hollow laminated slab. The steel pipe truss prestress hollow laminated slab is composed of a prestress concrete thin plate, high-strength prestresssteel wires, a steel pipe truss and a pentahedron hollow cavity. According to the steel pipe truss prestress hollow laminated slab, all the advantages of high rigidity of the steel pipe truss, high prestress strength and a hollow cavity are combined and integrated into one prefabricated part, the factory machining process of the part is simple, only the prefabricated part needs to be installed onsite, no support or few supports are needed, and no formwork is needed; and the construction process is simple, materials are saved, the self-weight is light, and the application advantages in large-span constructional engineering are particularly obvious.

The invention discloses a wind power generation blade. The wind power generation blade comprises a blade body; the blade body consists of multiple metal plates through assembly; the metal plates comprises a first panel, a second panel, and multiple hollow pipes arranged between the first panel and the second panel; connecting layers are arranged between the hollow pipes and the first panel, the second panel; and flanges are arranged on at least one ends of the hollow pipes. The wind power generation blade has the advantages of low deadweight, high strength, high rigidity, stable structure, sound insulation, noise reduction, high-temperature resistance, corrosion resistance, vibration resistance, long service life, short construction period and the like.

The embodiment of the invention provides a construction method of a hexagon screen drum structure, relating to the technical field of engineering designs. The construction method of the hexagon screen drum structure comprises the following steps: corner parts and middle parts of the hexagon screen drum structure can be constructed, the constructing height of each layer of the corner parts and the middle parts is set to be the sum of a preset height and a reserved height of the layer, and the reserved height of the layer is the height making the layer sink and deform due to the self weight of a building where the hexagon screen drum structure is positioned after the building where the hexagon screen drum structure is positioned is constructed; the corner parts and the middle parts of a constructed hexagon screen drum structure can be connected through panel point constructions, and the panel point constructions are used for connecting the corner parts and the middle parts and satisfying a relative movement of the corner parts and the middle parts of the hexagon screen drum structure in a set distance range; and the corner parts and the middle parts of the hexagon screen drum structure can be rigidly connected through the panel point constructions after the building where the hexagon screen drum structure is positioned is constructed.

The invention discloses a concrete block of a revetment and belongs to the field of water conservancy projects. The concrete block comprises a base plate. A wave reducing slope is connected to the back surface of the base plate, the wave reducing slope is composed of one or more arc-shaped structural segments and the gradient of the wave reducing slope is decreased gradually from top to bottom. Aburied pile is connected to the front surface of the base plate, the depth of the buried pile integrally buried into a gravel sand or a soil layer of a bank is greater than a block thickness of the base plate, the circumferential side of the base plate is connected to splicing segments, separately, an upper seepage hole and a lower seepage hole are formed in the directions of the upper and lower splicing segments, separately, and after overlapping, the upper seepage hole is formed right below or obliquely below the lower seepage hole, and gaps are reserved among the corresponding splicing segments. The concrete block of the revetment of a light high strength structure is long in service life and convenient to maintain, can play a smooth flow guiding role, can form relatively high all-roundholding power, and reduces damage caused by wave energy centralization, settlement, expansion and contraction and the like effectively. During construction, it is convenient for a worker to stay, andthe concrete block is convenient to product, transport and fill, so that a revetment structure is protected more favorably.