27results about How to "Large span" patented technology

The invention relates to the technical field of conductivity detection, in particular to a connector conductive terminal electroplating detection system. Comprising an unwinding device and a winding device; the unwinding device and the winding device are respectively used for unwinding and winding a material belt with a conductive terminal; a detection device is arranged between the unwinding device and the winding device; the detection device comprises a base; an auxiliary motor is arranged at the rear position of the base; an output shaft of the auxiliary motor is fixedly connected with a detection roller forwards; the detection roller is located right above the base, and the axial direction of the detection roller is consistent with the front-back direction of the base; a plurality of detection pieces are uniformly arranged on the outer wall of the detection roller in the circumferential direction; according to the invention, the plurality of detection pieces on the outer wall are driven by the detection roller to be in contact with the conductive terminals on the material belt in the conveying process in sequence, so that the conductivity detection of the conductive terminals of the connector is completed without pause, and the electroplating detection efficiency of the conductive terminals of the connector is improved.

The invention discloses a large-diameter slurry shield machine slurry pipeline pipe replacing device and method. The device comprises a pipe replacing trolley, a telescopic pipe device, a driving device, a rear matched trailer, a first pipeline support, a fixing frame and a new slurry pipe, and the pipe replacing trolley is connected with the rear matched trailer and can move back and forth in the length direction of the rear matched trailer; the telescopic pipe device is arranged on the rear matched trailer and supported by the first pipeline support, one end of the telescopic pipe device is connected with the pipe replacing trolley, and the other end of the telescopic pipe device is connected with the fixing frame. The driving device is arranged at the lower part of the pipe replacing trolley; during tunneling, the rear matched trailer drives the pipe replacing trolley to move forwards, the telescopic pipe device stretches out, the pipe replacing trolley moves backwards relative to the rear matched trailer, and when the pipe replacing trolley moves to the tail of the rear section trailer and reaches a pipe replacing distance, tunneling and slurry conveying are stopped, the pipe replacing trolley moves to the initial state, the telescopic pipe device retracts, and a new slurry pipe is replaced. Bend-free connection is achieved, and the pressure loss of a pipeline is small; the structure is simple and operation is convenient.

The invention provides an intermittent illumination yield increasing method, which comprises the following steps of: arranging shading strips above the ground at certain intervals, and continuously shielding, releasing, re-shielding and re-releasing shadows of the shading strips to shield sunlight irradiating the same crop so as to intermittently illuminate the crop, the photosynthetic efficiency reduction caused by the photosynthesis inhibition mechanism activated by continuous strong light is avoided, so that the crop growth is stimulated, and the crop yield is increased. The device has multiple gain functions such as intermittent illumination yield increasing, water delivery irrigation yield increasing, night light supplementing yield increasing, bird repelling and rat repelling yield keeping, power generation / heat collection income increasing and the like, and agricultural production can be effectively promoted.

The invention relates to a box girder and gate-type pier combined T-shaped rigid frame bridge and a construction method thereof. The box girder and gate-type pier combined T-shaped rigid frame bridge comprises concrete box girders, gate-type main piers and side piers. The gate-type main pier comprises two pier bodies and a cover beam, the two pier bodies are located on the two sides of the existing line, and the cover beam is located above the existing line and intersects with the existing line; the concrete box girder and the cover beam are arranged in a crossed manner and are positioned above the cover beam, and at the joint of the cover beam and the concrete box girder, the top of the cover beam and the bottom of the No.0 block of the concrete box girder are poured into a whole; the side piers are located on the two sides of the existing line, and the side piers are longitudinally arranged and supported at the bottom of the concrete box girder. Under the condition that the line height is limited, the pier-beam combination height can be reduced, the span is increased, and meanwhile the clearance requirement under the bridge is met; and meanwhile, the pier and the beam are fused, the integrity is good, material use can be reduced, the structural rigidity and the bearing capacity are improved, the span is increased, and better anti-seismic performance is achieved.

The invention provides a supporting leg system and an engineering machine. The supporting leg system comprises a supporting leg box, the supporting leg mechanism comprises a first supporting leg arm, a second supporting leg arm, a rotary driving part and a telescopic driving part, the first supporting leg arm is hinged to the supporting leg box, and the second supporting leg arm is arranged in the first supporting leg arm in a penetrating mode; the rotation driving piece and the telescopic driving piece are both electrically connected with the controller, and the controller is configured to obtain a supporting leg control instruction; under the condition that the supporting leg control instruction is obtained, the rotation driving part is controlled to drive one arm of the supporting leg to rotate relative to the supporting leg box according to the supporting leg control instruction; acquiring an avoiding angle range, a driving angle range and a current angle of one arm of the landing leg; when it is determined that the current angle is within the avoiding angle range, the telescopic driving part is shut down; and under the condition that the current angle is determined to be within the driving angle range, the telescopic driving part is controlled to perform telescopic driving according to the current angle. The safety of the landing leg system can be improved while the large span is achieved.

The present invention belongs to the field of building construction technology, and in particular, relates to an integrated assembled composite floor with thermal insulation and sound insulation structure, including a floor body, the upper end of which is fixedly connected with a plurality of connectors distributed in a rectangular array, a hollow layer having a thermal insulation effect is provided inside the floor body, and ventilation steel pipes connected to the outside are embedded in the inner walls of both sides of the hollow layer; and an adjustment component is used to adjust the thermal insulation effect of the hollow layer according to the outside temperature. The present invention can adjust the ventilation rate of the ventilation steel pipe according to temperature changes by setting an adjustment component, thereby adjusting the thermal insulation effect by changing the air convection speed; by setting an adaptive sound insulation component, the electric field strength around the deformable sound absorbing member can be adjusted according to the sound pressure of the outside world, and the sound insulation effect can be adjusted by changing the deformation degree of the deformable sound absorbing member.

This utility model discloses a concrete curing device for concrete preparation, belonging to the technical field of concrete curing devices. It includes a liquid storage tank, casters rotatably connected to the bottom of the tank, and a push handle welded to the end face of the tank. A support frame is welded to the end face of the tank, and a spray assembly is installed below the support frame. The tank is filled with liquid water. Construction workers push the tank, and a booster pump pressurizes the liquid water, which is then sprayed onto the concrete surface through a spray pipe and a spray hood at the bottom of an extension pipe, providing excellent curing results. The mounting base and the end of the extension pipe are fixedly connected. Depending on the span of the concrete structure, the extension plate is rotated relative to the support frame, and then the extension bolts are tightened. The insertion end of the extension bolt extends into the threaded groove, thereby adjusting and fixing the angle and position of the extension pipe, increasing its span, and improving curing efficiency during spraying.

The utility model relates to the technical field of power distribution, and discloses a low-voltage tubular bus duct, which is used for a low-voltage bus duct system and comprises at least three sheet-shaped phase line conductors, an insulating supporting piece is arranged between every two adjacent sheet-shaped phase line conductors, and the sheet-shaped phase line conductors are clamped in conductor mounting grooves of the insulating supporting pieces to form a tubular structure in a surrounding manner. The tubular structure is sequentially provided with a PE wire and an insulation protection layer from inside to outside. The phase line conductors are spliced to form the tubular structure through the insulating supporting pieces, compared with an existing rectangular intensive bus duct, the heat dissipation area of the bus duct is increased, the problems of poor heat dissipation and high temperature of the middle conductor caused by parallel stacking of the conductors are solved, the aging speed of the insulating supporting pieces is delayed, the service life of the bus duct is remarkably prolonged, and the service life of the bus duct is prolonged. The bus duct is compact in structure, small in occupied space and convenient to install, the current level can be adjusted by changing the thickness of the sheet-shaped phase line conductor, the cost is lower, the span is larger, and the universality is enhanced.

The planar segmented intelligent back burning device comprises a back burning detection device, a back burning heating device, axial flow fans and an air source box device, the back burning detection device and the back burning heating device are fixedly connected with an embedded part of a pit, and the axial flow fans are located at the left end and the right end of the pit and connected with an air suction pipeline of a workshop. The air source box device is fixed on pre-buried plates at the left end and the right end of a pit, the back burning detection device comprises a portal supporting stand column and a main cross beam, two transverse movement driving mechanisms are symmetrically arranged on the left side and the right side of the main cross beam, the transverse movement driving mechanisms are fixedly provided with lifting detection mechanisms, and the lifting detection mechanisms are provided with laser displacement sensors; the back burning heating device comprises a main body supporting mechanism and a baking gun mechanism; the laser displacement sensor is in communication connection with a baking gun servo motor of the baking gun mechanism; according to the invention, a group of double sets of laser displacement sensors are adopted, the deviation of the whole plane section in the transportation process can be identified, the welding deviation of a single longitudinal bone can also be identified, the precision and the accuracy are high, and the heat treatment effect of sheet body back burning is improved.

The present invention provides a virtual laser radar system and method based on mutual early warning of wind turbines, including: a wind farm deployment data module, which obtains the front and back relationship of wind turbines arranged at intervals in the main wind direction in the wind farm; a wind speed transfer characteristic module, which obtains the transfer characteristic of the wind speed in the main wind direction in the area where the wind farm is located; a wind farm operation data module, which obtains the actual operation data of the wind farm; and a neural network module, which captures the wind speed relationship between wind turbines according to the front and back relationship of wind turbines arranged at intervals in the main wind direction in the wind farm, the transfer characteristic of the wind speed in the main wind direction, and the wind farm operation data, so as to replace the physical laser radar to predict gusts.

The application discloses an openable explosion venting hatch cover structure for a hydrogen-containing cabin of a sea platform and a manufacturing and mounting method, and the explosion venting hatch cover structure is composed of a steel frame, an upper layer of profiled steel plates, a lower layer of profiled steel plates, a fireproof layer, a deck connecting structure and a ridge sealing structure. The hatch cover structure is higher than a deck plane as a whole, a hatch cover top surface adopts bidirectional pitching, a slope is not less than 5%, and a hatch cover structure steel frame bottom surface is horizontal. The hatch cover structure is formed as a whole through the steel frame, can be used as a roof lifting cover, has the advantages of overall lifting, overall dismounting and convenience for hoisting cabin equipment. The hatch cover structure is provided with the fireproof layer between the two layers of profiled steel plates, has the explosion pressure relief function and the fireproof function. The application solves the problems of rapid disintegration of the hydrogen-containing cabin hatch cover and pressure relief in the cabin, has the structural functions of being able to bear typhoon load, fireproofing, water sealing and the like, has the advantages of being openable, small damage to adjacent facilities, independent manufacturing, installation and maintenance and the like.

The utility model discloses a rear module framework suitable for a PHEV chassis, the chassis and a vehicle. The rear module framework of the chassis comprises a rear auxiliary frame, and reinforcing ribs in bilateral symmetry are arranged on cross beams and longitudinal beams of the rear auxiliary frame; bushings are arranged at the positions of four connecting joints of the rear auxiliary frame and a vehicle body, three suspension supports are arranged on the rear auxiliary frame, the three suspension supports are of hollow structures, and flanges are arranged at the edge positions of the three suspension supports. According to the rear auxiliary frame, the suspension supports of the rear auxiliary frame are optimized, the three suspension supports are hollowed out and flanged, the weight is reduced, the rigidity is improved, and meanwhile reinforcing ribs are arranged on the suspension supports to guarantee the strength of the rear auxiliary frame.

The utility model discloses a kind of sealing layer and windowing integrated deflector device, including windowing milling cone, deflector, support slip hydraulic assembly, hand-off sub, permanent packer sequentially connected from top to bottom;Support slip hydraulic assembly includes deflector anchoring slip and deflector support slip;The upper end of hand-off sub is connected with the lower end of deflector support slip by screw thread;The lower end of windowing milling cone is connected between the upper end of deflector by pin;The upper end of deflector is communicated with capillary tube;Deflector, support slip hydraulic assembly, hand-off sub and permanent packer are interconnected between each other.Utilize the utility model, sealing packer, deflector, windowing milling cone can be realized to be placed in place one time, can avoid conventional deflector process cumbersome, construction time is long, cost is high and prone to accident etc.

The application discloses a kind of pre-tension prestressed frame assembly structure system and its construction method, it includes concrete column, pre-tension prestressed thin bottom composite beam, pre-tension prestressed thin bottom composite board, post-tying steel framework and post-cast concrete, wherein, concrete column can be cast-in-place or prefabricated, column is made to floor place and reserves reinforcement and post-cast area;The pre-tension prestressed thin bottom composite beam is composed of prestressed steel strand, thinner concrete beam bottom plate, stirrup, beam reinforcing rib, wherein, prestressed steel strand is used as part of force longitudinal reinforcement, beam bottom plate is laid with non-prestressed reinforcement, non-prestressed reinforcement includes bottom and top longitudinal reinforcement, stirrup, wherein longitudinal reinforcement is anchored into concrete column, meets specification seismic requirement, enhances the overall performance and ductility of structure.The application is laid with steel reinforcement perpendicular to reinforcing rib on the bottom plate of pre-tension prestressed thin bottom composite board, reinforcing rib has hole, steel reinforcement can be passed through reinforcing rib, composite floor can be bidirectional force transmission, and the overall structure is comparable to cast-in-place.

A connector, a kit of parts, a modular building, and related methods. The connector comprises: a first wood member; a first connector assembly associated with the first wood member, the first connector assembly comprising: a plurality of elongate anchor members, each anchor member comprising a first end extending into and fixed relative to the first wood member; and a second end protruding from the first wood member, where each anchoring member defines a bore perpendicular to a longitudinal axis of the anchoring member to receive a bolt; the connector further comprises: a plate connected or connectable to the second member, the plate defining at least one aperture for receiving the bolt; at least a plurality of bolts, the or each bolt configured to extend through at least one of the anchoring member and the plate; wherein, for the or each bolt, at least one of the respective anchoring member hole or plate hole is oversized to receive the respective bolt in a clearance fit; the or each bolt is configured to clamp the plate and the anchoring member such that relative movement of the plate and the first connector assembly is prevented by friction caused by a clamping force provided by the plurality of bolts. Figure 1A will be published together with the abstract.

This invention provides a support structure for erecting large-span truss steel beams, comprising steel pipe piles, transverse connecting components, and longitudinal connecting components. Four steel pipe piles are evenly arranged in a rectangular pattern. Two longitudinal steel pipe piles are connected by longitudinal connecting components, and two transverse steel pipe piles are connected by transverse connecting components. Each longitudinal connecting component includes an upper longitudinal truss and a lower longitudinal truss, connected by diagonal braces. Two diagonal braces are arranged at the left and right ends of the longitudinal connecting component, forming a figure-eight shape. Each transverse connecting component includes an upper transverse truss and a lower transverse truss, with the upper transverse truss corresponding to the upper longitudinal truss and the lower transverse truss corresponding to the lower longitudinal truss. This invention provides a support structure for erecting large-span truss steel beams, which has the advantages of simple structure, easy construction, light weight, good applicability, and high structural stability.

The invention discloses a construction method for lengthening and transforming a bridge body, and belongs to the technical field of civil construction. The construction method for lengthening and transforming the bridge body is used for lengthening and transforming a main beam between an original bridge pier and an original bridge abutment, and comprises the following steps: chiseling off part of concrete protection layers on a top plate and a bottom plate, close to the end part of a newly-added bridge pier, of the main beam until main reinforcements on the top plate and the bottom plate are exposed; and the longitudinal main reinforcements in the length direction of the main beam are reserved, the longitudinal main reinforcements are lengthened, the prestressed steel strands are arranged, concrete is poured, and the beam body lengthening work is completed. According to the construction method for lengthening and transforming the bridge body, the span of an existing bridge is increased, the extension requirement of an underneath pass road is met, compared with dismantling and reconstruction, the construction period is short, cost can be saved, resource waste is reduced, and great social benefits are achieved.

The utility model belongs to the technical field of flexible tracking support, specifically, relate to a wind resistance damper structure and photovoltaic flexible support, wherein the damper structure is arranged below the flexible photovoltaic support, is used for shock absorption and protection to the steel cable assembly on the flexible photovoltaic support, avoids the steel cable assembly because of the resonance causes the large -scale swing, including, damping cable, damping cable is arranged below the position of multiple rows of steel cable assembly, damping cable and steel cable assembly are perpendicular to the space arrangement, a plurality of dampers are fixedly installed on damping cable, the other end of damper is connected with steel cable assembly, and the both ends position of damping cable is opposite fixed, and damping cable has certain prestress, the utility model can avoid the steel cable because of the resonance causes the large -scale swing, avoids the component to be destroyed.

The utility model discloses a large-span road photovoltaic, which belongs to the technical field of road photovoltaics and comprises a primary truss, a secondary truss and a secondary truss, the secondary trusses are connected between the lower chords of the two adjacent primary trusses and are distributed in the second direction; the stand columns are arranged on the two sides of the road and distributed in the first direction. The starting end of the forking part is connected to the stand column, and the tail end is connected to a lower chord of the main truss; the main purlins are connected to the upper chord members of the main trusses and distributed in the second direction; the secondary purlins are connected to the primary purlins and distributed in the first direction; the photovoltaic roof is formed by distributing photovoltaic assemblies in an array mode in the first direction and the second direction, the photovoltaic assemblies are connected to the secondary purlins, the forking parts and the stand columns form a crotch-shaped supporting structure, the span of the primary truss in the first direction and the second direction is increased, the number of the arranged stand columns is reduced, steel is saved, and the driving view is widened. And branch road intersections of the road can be flexibly avoided.

The invention provides a large-span truss structure steel beam erecting support. The large-span truss structure steel beam erecting support comprises steel pipe piles, transverse connecting assemblies and longitudinal connecting assemblies. The four steel pipe piles are evenly arranged in a rectangular shape, every two longitudinal steel pipe piles are connected through a longitudinal connecting assembly, and every two transverse steel pipe piles are connected through a transverse connecting assembly. The longitudinal connecting assembly comprises an upper longitudinal truss and a lower longitudinal truss, the upper longitudinal truss and the lower longitudinal truss are connected through diagonal bars, the two diagonal bars are arranged corresponding to the left end and the right end of the longitudinal connecting assembly, and the two diagonal bars are arranged in a splayed structure; the transverse connecting assembly comprises an upper transverse truss and a lower transverse truss, the upper transverse truss corresponds to the upper longitudinal truss, and the lower transverse truss corresponds to the lower longitudinal truss. The large-span truss structure steel beam erecting support has the advantages of being simple in structure, easy to construct, light in weight, good in applicability and high in structural stability.

The present invention relates to the technical field of lifting platforms, and specifically discloses a liftable mobile platform for detecting and maintaining navigation lights, which includes a self-propelled chassis, a lifting mechanism and an operating platform; the self-propelled chassis includes a first body and a second body; the first body is supported by four straight wheels and the straight wheels are driving wheels, and a rotating body is rotatably fixed in the middle of the first body; the second body is located above the first body and the middle is fixedly connected to the rotating body, the front end of the second body is supported by two steering wheels, the steering wheels are located in front of the straight wheels, the rear end of the second body is supported by two universal wheels, the universal wheels are located behind the straight wheels, and the lifting mechanism is installed and fixed above the middle of the second body. The liftable mobile platform has a fast moving speed, strong walking power, good obstacle crossing ability, high support stability and operation safety, is easy to use, can more comprehensively meet the actual needs of complex and changeable ground conditions in navigation light detection and maintenance operations, and is conducive to improving operation efficiency.

This utility model relates to the field of wind turbine pitch reducer technology, specifically to a pitch reducer structure, including an output shaft and a housing. One end of the output shaft is connected to a planetary carrier. The output shaft includes a first connecting section and a second connecting section arranged sequentially from the outside to the inside along the axial direction. The second connecting section has external threads, and the inner wall of the planetary carrier has internal threads. The first connecting section has multiple external pin holes, and the planetary carrier has multiple internal pin holes. Matching internal and external pin holes together form mounting pin holes, with locating pins inside. The planetary carrier and the output shaft are axially positioned by the matching of internal and external threads, and circumferentially positioned by the matching of mounting pin holes and locating pins. A large tapered bearing and a small tapered bearing are provided between the housing and the output shaft, with the small tapered bearing positioned close to the planetary carrier. The reducer components in this design have reliable positioning, low risk of component failure, high safety, and can significantly reduce the risk of off-center loading.

The present invention provides a wire cutting device with adjustable cutting span, and relates to the technical field of wire cutting. A wire cutting device with adjustable cutting span comprises: a cutting machine body, a driving wheel, three supporting wheels and a cutting wire; a first connecting rod, whose two ends are respectively rotatably connected to the driving wheel and a supporting wheel, and the first connecting rod is fixedly installed with a first rotation source; a second connecting rod; a limit rod, whose two ends are respectively hinged to the midpoint of the first connecting rod and the midpoint of the second connecting rod, and the limit rod is fixedly installed with two first linear drivers, and the driving shafts of the two first linear drivers are respectively hinged to the first connecting rod and the second connecting rod; the cutting machine body is rotatably connected to two first supporting rods, and each first supporting rod is provided with a reinforcement mechanism for supporting the first connecting rod and the second connecting rod. The present invention has the function of improving the processing accuracy of parts while also being conducive to extending the service life of the cutting wire.

This invention relates to a high-speed signal acquisition method, specifically a digital acquisition method for large dynamic range transient pulses, solving the technical problem that existing technologies struggle to record transient pulses with large amplitude spans and significant range uncertainties. The digital acquisition method for large dynamic range transient pulses comprises the following steps: Step 1: Establishing a digital acquisition system for large dynamic range transient pulses; the digital acquisition system includes an analog signal processing unit and a waveform digitization unit; Step 2: Pre-calibrating the digital acquisition system for large dynamic range transient pulses using a standard signal; Step 3: Inputting a transient pulse P1 into the pre-calibrated digital acquisition system for large dynamic range transient pulses from Step 2, obtaining waveform data of the pulse train P2, and acquiring and extracting waveforms with different gains to achieve digital acquisition of large dynamic range transient pulses.

This invention discloses a ratchet wrench, relating to the field of wrenches, comprising a housing, a motor, a transmission structure, and an operating head located at the end of the housing. The motor drives the operating head through the transmission structure, which includes a first-stage planetary gear mechanism and a second-stage planetary gear mechanism. The first-stage planetary gear mechanism includes a first sun gear and a first external gear ring, which is configured to move axially. A fixing member is fixed inside the housing, and by driving the axial movement of the first external gear ring, the first external gear ring can be selectively fixed or disengaged from the fixing member. When the first external gear ring is fixed to the fixing member, the transmission structure obtains a first transmission ratio; when the first external gear ring is disengaged from the fixing member, the transmission structure obtains a second transmission ratio; wherein the first transmission ratio is greater than the second transmission ratio. This invention has the advantages of a large adjustable range of transmission ratios and a compact and reliable structure.

The utility model relates to a kind of storable table tennis tables including assembling keel, rectangular table board and detachable net, rectangular table board is detachably set in the upper end of assembling keel, when disassembling, first, rectangular table board is disassembled on assembling keel, rectangular table board includes several rotating plates, several rotating plates are connected head to tail along the length direction of assembling keel, rotationally connected between adjacent two rotating plates, each rotating plate is successively rotated and folded upwards or downwards, the lower end of assembling keel is rotationally provided with support frame in four corners, support frame is rotated and folded inwards as a whole and is attached to assembling keel, the whole table tennis table is divided into multiple independent units, the volume of each independent unit is smaller, user can successively arrange folded rectangular table board and assembling keel, fully utilize various fragmented space to flexibly arrange independent unit storage, reduce the weight of single handling, so that storage and movement are more relaxed and labor-saving, improve the convenience of storage table tennis table.