157results about How to "Improve erection efficiency" patented technology

The invention discloses a method for steel-box beam erection applied in self-anchored suspension bridge. Procedures comprise that (1) the support for steel-box beam is set on bank or in no-navigation area and steel-box beam is preassembled with dividing segments on the support for steel-box beam; (2) temporary piers for steel-box beam, which satisfy waterway grade, are set in the waterway suspended by the suspension bridge; (3)preassembled steel-box beam is pushed forwards by pushing or dragging method so that the steel-box beam moves to temporary piers for steel-box beam from the support for steel-box beam and the steel-box beam is supported by temporary piers; then the steel-box beam is preassembled in dividing segments and it is pushed or dragged continuously so that preassembled steel-box beam moves forwards and it passes through temporary piers for steel-box beam on waterway in turn to achieve the opposite bank. The invention is provided with simple construction and it can be applied in waterway with busy suspension and higher waterway grade.

The invention relates to the field of construction of multi-tower suspension bridges, and particularly relates to a span-division erection construction method of a construction catwalk of a multi-tower suspension bridge. The construction method is characterized in that: a multi-span construction catwalk is divided into different spans, every two spans of the construction catwalk are taken as a construction segment, each construction segment is provided with a corresponding single-line reciprocating traction system, a catwalk bearing rope is independently erected for each single-line reciprocating traction system and finally, the catwalk bearing ropes which are erected segment by segment are fixed at the segment positions. In the invention, the span-division erection construction method of the construction catwalk of the multi-tower suspension bridge is provided, thus the erection efficiency of the catwalk bearing ropes of the construction catwalk of the multi-tower suspension bridge is improved.

The invention belongs to the technical field of radar electronics, in particular relates to a large-array surface phased array radar antenna. The large-array surface phased array radar antenna comprises an array surface antenna and a support rack, wherein the array surface antenna comprises antenna line oscillators and antenna row oscillators, the number of the antenna row oscillators is equal to the number of the antenna line oscillators, the distance between two adjacent groups of antenna line oscillators is equal to the distance between two adjacent groups of antenna row oscillators, each antenna line oscillator and each antenna row oscillator cross to form a cross meshed structure of the array surface antenna, top end surfaces of dipoles after each antenna line oscillator and each antenna row oscillator cross are arranged on the same plane, symmetric surfaces of two adjacent dipoles on each group of antenna line oscillator are arranged on a plane where the group of antenna line oscillators are located, and the symmetric surface of each dipole on each group of line oscillators is arranged on a plane where the group of antenna row oscillators are located. By the large-array surface phased array radar antenna, the usage quantity of T/R modules can be effectively reduced on the premise that the working accuracy of the radar antenna can be ensured, and the purpose of effectively controlling cost is further achieved.

The invention belongs to the technical field of cable facilities in transformer substations, and particularly relates to a prefabricated finished cable trench. The prefabricated finished cable trench comprises a plurality of cable trench bodies and cable holders in the cable trench bodies. Each cable trench body comprises a first base plate and a second base plate which are connected fixedly. First trench walls and first square steel sets are arranged on the upper end faces of the first base plates from left to right. First cover plates are arranged at the upper ends of the first trench walls and the first square steel sets. Second square steel sets and second trench walls are arranged on the upper end faces of the second base plates. Second cover plates are arranged at the upper ends of the second squire steel sets and the second trench walls. The prefabricated finished cable trench has the advantages that the longitudinal depth design of conventional cable trenches is changed into flattening design, so that on the premise of guaranteeing utilization rate of cable channel sections, construction difficulty in laying of cables is reduced, and convenience is brought to follow-up maintenance and operation; multiple prefabricated modules are matched flexibly to splice cable trenches with different widths, and the prefabricated finished cable trench is applicable to cable laying at different places.

The invention relates to an adjustable moving rotary type combined support. The adjustable moving rotary type combined support is characterized by comprising a base, an adjusting type support component and a rotatable insulation support crossarm component, wherein the base can be moved towards any direction, the adjusting type support component is arranged on the base, and the rotatable insulation support crossarm component is arranged on the adjusting type support component. Via the adjusting type support component, height adjusting in a vertical direction can be realized. The rotatable insulation support crossarm component is capable of self-rotating around a central axis thereof. Pipelines in different types are respectively supported on different crossarms of the rotatable insulation support crossarm component. By the aid of the adjustable moving rotary type combined support, temporarily used pipelines like cables, circuits, gas pipelines are arranged overhead, and electric shock and gas leakage caused by grinding and wearing are avoided, so that the adjustable moving rotary type combined support is a necessary technical measure for preventing safety production accidents like electric shock, fire accidents and suffocation and eliminating potential safety hazards like electricity leakage and gas leakage.

The invention discloses a pontoon bridge capable of being quickly assembled and an assembling method thereof. The bridge comprises a bridge head unit, a bridge tail unit, a plurality of middle units and a plurality of transition plates; the middle unit comprises a first bridge body, a second bridge body, a third bridge body, a first connecting plate and a second connecting plate; the first bridgebody and the second bridge body are connected to the two sides of the third bridge body respectively. The first connecting plate is arranged on the first bridge body; a positioning hole is formed in the left end of the first connecting plate; the positioning holes are provided with inserting holes, the first connecting plates are provided with locking mechanisms above the inserting holes; the second connecting plates are arranged on the second bridge body, the right ends of the second connecting plates extend outwards to form inserting blocks, the inserting blocks are inserted into the inserting holes of the first connecting plates of the adjacent middle units, and the inserting blocks inserted into the inserting holes are locked through the locking mechanisms. The connecting process of the adjacent middle units is easy and convenient to operate, labor is saved, and the erection efficiency of the pontoon bridge is greatly improved.

The invention relates to a through-tunnel lower pilot girder type non-moving lifting bridge girder erection machine which belongs to the field of railway bridge erection equipment. A folding front support leg and an auxiliary support leg are connected on the bottom surface at the front part of a main girder of the lifting bridge girder erection machine, and the rear end of the main girder is connected with an O-shaped rear support leg; a front lifting girder overhead crane and a rear lifting girder overhead crane are arranged on the main girder, a hoisting component is mounted at the middle part of the main girder, a pilot girder lifting machine and a pilot girder through-hole overhead crane are connected on a track on the upper end surface of the main girder, and the pilot girder through-hole overhead crane is positioned at the front end of the main girder; and a lower pilot girder machine comprises a pilot girder front support leg and a pilot girder rear support leg of the main girder of a lower pilot girder, and the pilot girder front support leg and the pilot girder rear support leg are arranged at the front end part and the rear end part of the main girder of the lower pilot girder. The through-tunnel lower pilot girder type non-moving lifting bridge girder erection machine has the advantages that the packing through-tunnel state of the through-tunnel lower pilot girder type non-moving lifting bridge girder erection machine is the pilot girder front-mounted type state, and the pilot girder machine can be in place when going out of a tunnel, thereby greatly improving the erection efficiency for resetting the whole machine after going out of the tunnel, being good in adaptability to working conditions, saving construction time, saving construction cost, and being smooth, safe and reliable.

The invention discloses a rapid supporting device for emergency maintenance of a pipeline and an application method for the rapid supporting device. The device comprises side surface supporting mechanisms, end surface supporting plates, unfolding mechanisms and rapid supporting rods; the side surface supporting mechanisms are of plane structures and have the function of extending in the length direction of the plane; the two ends in the length direction of the two side surface supporting mechanisms are movably connected together through the two end surface supporting plates to form a polygonalgeometric support body; the two end surface supporting plates are hinged to each other through one side edges, and the other side edges of the two end surface supporting plates are hinged to the sidesurface supporting mechanisms; and the unfolding mechanisms are connected to the two side surface supporting mechanisms and enable the geometric support body to realize plane folding and complete unfolding through hinge points by means of linear extendable movement. According to the rapid supporting device, an operation pit in the emergency maintenance process of the pipeline can be quickly and efficiently supported, and collapse of the operation pit can be prevented.

The invention discloses a wide-body steel girder erecting machine and a girder erecting method thereof, and relates to the technical field of bridge engineering construction, comprising: a main structure, which includes two oppositely arranged main girders, and the two ends of the two main girders are fixed There is a main beam connecting two main beams; a supporting mechanism, which includes front outriggers, middle outriggers and rear outriggers fixed on the two main beams, and the front outriggers, middle outriggers and rear outriggers are all set There are telescopic devices, which can extend and contract the front outriggers, middle outriggers and rear outriggers; and hoisting devices, which include a crane and a spreader. The spreader is set under the crane, and the crane can be retracted and retracted. The spreader is lowered, and the crane can also move longitudinally and laterally along the bridge. The present invention can realize the efficient, stable and safe erection of wide-body steel girders under the working conditions of existing bridge support space, limited foundation bearing capacity and inability to use large-scale equipment.

The invention provides a solar panel support structure based on rotating centrifugal force, and relates to the technical field of solar photovoltaic. The invention discloses a solar panel support structure based on rotating centrifugal force. The solar panel support structure comprises a stand column, a ball is fixedly installed at the top end of the stand column, the top of the ball is wrapped with a limiting sleeve, a supporting frame is fixedly installed at the top end of the limiting sleeve, a containing plate is fixedly installed at the top end of the supporting frame, sliding blocks areslidably connected to the left side and the right side of the containing plate, and first springs are fixedly connected to the ends, close to the center of the containing plate, of the sliding blocks.According to the solar panel support structure based on the rotating centrifugal force, the working intensity of the solar panel during installation and replacement is reduced, the erection efficiency of the solar panel is improved, the orientation and the inclination angle of the solar panel can be adjusted, and the solar panel can tend to be in a horizontal state no matter whether the solar panel encounters wind power in any direction, so that the damage of the wind power to the solar panel is reduced.

The invention discloses a construction method for erecting a telegraph pole on mountain land. The construction method comprises the following specific steps: an inverted-trapezoidal deep pit with thevertical front end and the inclined rear end is excavated in the position where the telegraph pole is to be erected; the root of the telegraph pole is pushed into the deep pit along the slope of the deep pit from back to front till the root of the telegraph pole reaches the bottom end of the deep pit; an inclined pull line connected to the top end of the telegraph pole is pulled in front of the deep pit to vertically pull the telegraph pole up, and the bottom end of the inclined pull line is fixed to the ground surface through a ground anchor; the deep pit is buried through soil excavated during deep pit excavation, and compacted; shallow pits are excavated around the telegraph pole and compacted again; and concrete foundations are poured in the excavated shallow pits, and natural curing is conducted for ten days or above. According to the construction method, the telegraph pole can be prevented from toppling, a safety guarantee is provided for an operator, and the firmness of the telegraph pole after soil filling compaction can be improved, so that the firmness meets the telegraph pole erection requirements.

The invention discloses a multi-functional auxiliary arrangement rack for computer communication engineering cables, which comprises fixed rods, and is characterized in that one side of each fixed rodis rotatably connected with an adjusting knob, the top of the fixed rods is connected with a support frame, the upper end and the lower end of the support frame are provided with pulleys, a center shaft of each pulley is provide with a limit rod, each pulley is in transmission connection with a cable, the bottom of the fixed rods is fixedly connected with a bottom plate, the bottom of the bottomplate is connected with a supporting foot, one end of each supporting foot is connected with a roller, both sides of the support frame are provided with threading holes, and the cables pass through the corresponding threading holes. In the invention, the cables are enabled to reduce part of the movement resistance in the pulling process through the transmission of the pulleys so as to reduce the occurrence of cable wear; and each cable is placed between a first pressing plate and a second pressing plate so as to avoid the cable loosening and improve the erection efficiency.

The invention relates to an assembled road steel bridge overall track erection and push system and process. The system is overall located in a flat field paved with concrete cushion blocks, steel rails are fixed to the concrete cushion blocks, two parallel tracks are formed, a horizontal rolling piece supporting frame with horizontal rolling pieces on the top is arranged on the same straight line as the tracks in the field and supports a girder of a steel bridge, traction wagons capable of moving along the steel rails are arranged on the steel rails, support the steel bridge, are controlled by an electric control cabinet to push the steel bridge to move forwards and have independent drive mechanisms, and the supporting center of the traction wagons is right the center of gravity of the steel bridge. The steel bridge can continue moving forwards along the tracks when driven by the traction wagons, in this way, assembling of the steel bridge can be directly competed on the land in a short time without the need of erecting a supporting frame or a concrete supporting tower in a riverway; furthermore, safety is high when the steel bridge is assembled on the land, and the assembled road steel bridge overall track erection and push system is particularly suitable for breaking through rescue roads during emergency rescue; it is not needed that supporting frames are fixed in riverways, erection efficiency is high, erection is convenient to carry out, and influence caused by the environment is small.

The invention relates to a double-log periodic antenna. The antenna is the double-log periodic antenna which is applicable to a severe environment and conforms to demands such as disassembly. A cross structure form is employed, two single-log periodic antennas are integrated to form the double-log periodic antenna, and the requirement of the antenna on horizontal polarization and vertical polarization is achieved. With a reasonable structural form, transportation and installation are facilitated, a severe environment condition can also be met, the double-log periodic antenna can be applicable to application demands of various special occasions, and the system performance can be greatly improved.

The invention discloses a cable stretching device used for power grid construction, and relates to the technical field of power grid construction. The cable stretching device comprises a movable vehicle body, a winding mechanism, a detection mechanism and a guide mechanism. The winding mechanism and the guide mechanism are arranged on the two sides of the portion above the movable vehicle body correspondingly. The detection mechanism is arranged above the position between the winding mechanism and the guide mechanism The winding mechanism comprises winding rollers, a rotating shaft, a brake mechanism and a drive mechanism. The multiple winding rollers are arranged side by side and are all arranged on the rotating shaft in a sliding and sleeving manner. The brake mechanism and the drive mechanism are arranged on the two sides of the winding rollers in a concentric manner correspondingly. By means of arrangement of the winding rollers, pressure sensors, arc-shaped guide frames, the brakemechanism and the drive mechanism and cooperation between structures, when the device is used, the tension degree of cables can be monitored and controlled in real time, stretching of multiple cablescan be controlled through the device at the same time, the work efficiency is greatly improved, and labor force is reduced.

The invention discloses a double-working-face integrated bridge girder erection machine without front supporting legs. An existing double-working-surface integrated bridge girder erection machine is improved, front supporting legs are cancelled, and a 'cantilever' part at the front part of the bridge grinder erection machine is supported by stay cables, so the whole bridge girder erection machineis supported on an erected girder span without being influenced by undulating topography, and can erect bridge prefabricated parts, so the operation efficiency is improved, previous procedures of repeatedly fixing and unlocking front supporting legs and repeatedly adjusting the heights of front supporting leg stand columns are omitted, the construction procedures are simplified, and the erection efficiency and the adaptability of the bridge grinder erection machine are improved. Meanwhile, the integrated bridge girder erection machine can achieve full-prefabricated integrated shortcut-free transportation and assembly erection of the bridge pier stand columns, the cover beams and the upper part structure main beams, is high in adaptability and erection efficiency and can adapt to full-prefabricated assembly of bridges in areas with large topography fluctuation such as mountainous areas, and hills.

The invention provides a railway auxiliary beam rapid transporting and erecting trailer. The railway auxiliary beam rapid transporting and erecting trailer comprises a suspension part trailer, a transmission part trailer, a suspension part, a transmission part, and a prefabricated auxiliary beam; the suspension part includes a control part, a hanging part, a power traction part, and a reaction frame; the transmission part includes a horizontal transferring machine and a reaction force baffle. A bottom plate of the suspension part trailer is thickened to form a counterweight part, and a slidinggroove is formed in the transmission part trailer to enable the reaction force baffle to slide; a prefabricated finished auxiliary beam is transported by the railway auxiliary beam rapid transportingand erecting trailer which is hung on a head of shunting equipment, and the automation of the installation process of the auxiliary beam is achieved by the control part coordinating cable force, support reaction of the baffle and pushing rates; after the auxiliary beam is installed in position, an upper sling is relieved and the trailer is removed along an existing line. According to the railwayauxiliary beam rapid transporting and erecting trailer, a mechanical automation technology is applied to realize the automation of the erection process of the auxiliary beam, the flexibility and the adaptability of the auxiliary beam construction are increased, and the reinforcement for the existing line and the reconstruction project are facilitated.

The invention relates to a foundation pit slope collapse prevention structure and an erecting method thereof. The foundation pit slope collapse prevention structure comprises a rod body, wherein the rod body comprises a fixed rod and movable rods arranged at the two ends of the fixed rod; the whole fixed rod is hollow; the movable rods are inserted and slidably connected into the hollow fixed rod;the ends, away from each other, of the movable rods on the two sides are provided with supporting plates used for abutting against the side wall of a foundation pit; a plurality of annular plates areannularly arranged on the inner wall of the fixed rod and located on the two sides of the fixed rod; one side of each annular plate is fixedly connected to the inner wall of the fixed rod, and the other side of each annular plate obliquely extends in the direction away from the center of the fixed rod; a plurality of elastic rods are arranged on the movable rods in the circumferential direction of the movable rods; the plurality of elastic rods are arranged in the length direction of the movable rods; one end of each elastic rod is fixedly connected to the corresponding movable rod, and the other end of each elastic rod obliquely extends in the direction away from the corresponding supporting plate; and acute angles formed between the annular plates and the inner wall of the fixed rod areused for allowing the elastic rods to move in. The foundation pit slope collapse prevention structure has the advantage of being convenient to erect.

The invention discloses an excavation vertical frame sling cart which comprises a cart body, a guide rail, a vertical frame bearing trolley, a telescopic platform, a jacking mechanism and a hoisting device. The telescopic platform is installed at the upper end of the cart body in a telescopic mode and is connected with a first telescopic drive mechanism for driving the telescopic platform to be telescopic; the jacking mechanism is connected with the telescopic platform and used for jacking a vertical frame on the upper portion of the jacking mechanism; the hoisting device is used for hoistingand conveying the vertical frame to the vertical frame bearing trolley; the vertical frame bearing trolley is installed on the guide rail and can transversely and horizontally move and convey the vertical frame along the guide rail; the vertical frame bearing trolley is connected with a horizontal movement drive mechanism; and the horizontal movement drive mechanism can drive the vertical frame onthe vertical frame bearing trolley to transversely move and convey the vertical frame to the upper portion of the jacking mechanism in a retracting state. The excavation vertical frame sling cart ishigh in design integration degree, mounting automatic degree and vertical frame erecting efficiency, reduces manual operation and reduces potential safety hazards of construction.

The invention discloses an excavation vertical frame lifting and placing vehicle. The excavation vertical frame lifting and placing vehicle comprises a vehicle main body, guide rails, vertical frame bearing trolleys and lifting devices; a stretchable platform is installed at the upper end of the vehicle main body in a stretchable mode, and a jacking mechanism is connected to the stretchable platform; and the lifting devices are used for lifting a vertical frame and sending the lifting frame to the vertical frame bearing trolleys; the vertical frame bearing trolleys are installed on the guide rails and can transversely move so as to convey the vertical frame along the guide rails, the vertical frame bearing trolleys are connected with translation driving mechanisms, and the translation driving mechanisms can drive the vertical frame placed on the vertical frame bearing trolleys to transversely move and can convey the vertical frame to the position above the jacking mechanism in the retraction state. The excavation vertical frame lifting and placing vehicle has the advantages that the integration degree is high, the installation automation degree is high, the erection efficiency of the vertical frame is high, the manual operation is reduced, and the potential safety hazard of construction is reduced.

The invention discloses a bridge girder erection machine capable of realizing on-girder whole-hole two-way erection of a large-tonnage asymmetric different-width precast box girder. The bridge girder erection machine comprises a machine arm in symmetric design in longitudinal and transverse directions, wherein a front support leg, a middle support leg and a back support leg are arranged on the machine arm, front and back trusses travelling along a girder longitudinally are arranged on the machine arm, front and back crane trolleys capable of moving leftwards and rightwards as well as a winch supporting and pulling mechanism for longitudinal traveling of each support leg are arranged on the trusses, the front support leg can be moved and realize multi-stage telescoping, lifting appliances adopted by the crane trolleys comprise shoulder pole beams and multiple roe piece assemblies, transverse balancing devices are arranged at the upper ends of the shoulder pole beams, and stepless adjustment devices and longitudinal swing adjustment devices are arranged on two sides. The bridge girder erection machine adopts a three-support-leg structure without a front auxiliary support leg, during span change, the front support leg travels longitudinally to the corresponding span position, positioning pins are inserted, and thus, span change of the whole machine can be realized; the bridge girder erection machine can erect the girder reversely after the front and back support legs are interchanged quickly and simply on the bridge.

The invention discloses a connection device for large-section steel truss girders to connect a mounted girder section and a to-be-mounted girder section. The large-section steel truss girder includesan upper chord, a lower chord, a vertical bar, a connection bar, and a large cross girder. The connection device includes a first pulling mechanism, one end of which is connected to a large cross girder of the to-be-mounted girder section, and the other end of which is connected to the corresponding large cross girder in the mounted girder section, wherein when the first pulling mechanism pulls the mounted girder section and the to-be-mounted girder toward each other, the large cross girder in the to-be-mounted girder section approaches the corresponding large cross girder in the mounted girder section; a second pulling mechanisms the two ends of which are located in the middles of the mounted girder section and the to-be-mounted girder section respectively, wherein when the second pullingmechanism pulls the mounted girder section and the to-be-mounted girder toward each other, a connection bar in the to-be-mounted girder section approaches the corresponding connection bar in the mounted girder section; and a jacking mechanism including a jack disposed on the upper chord in the to-be-mounted girder section and having a fixed top, wherein when the jack is raised upward, the to-be-mounted girder section is pressed down. The connection device effectively adjusts the relative deformation between the mounted girder section and the to-be-mounted girder section, and realizes the connection of large-section steel truss girders.

The invention discloses a container-ship guide rail, comprising two lines of outrigger angle steel (1) which are arranged in a parallel and opposite manner; an integral connecting flat iron (2) is fixedly welded on the inner side face of each line of outrigger angle steel (1); a guide rail template (3) is vertically and fixedly welded on the upper part of the same side of each pair of opposite outrigger angle steels and a groove appearing with a concave shape is arranged in the middle of the guide rail template (3); one line of groove of the guide rail template (3) also appears as one line; two lines of guide angle steel (4) adjacent to the two sides of the groove are arranged; one plane of each line of guide angle steel (4) is arranged horizontally as the guide face; and a reinforcing flat iron (5) is fixed between the vertical planes of the two lines of guide angle steel (4). The invention also provides a method for establishing the guide rail for a container-ship. The invention can conveniently control the precision of the guide rail and simultaneously enhance the establishing efficiency of the guide rail.

The invention discloses a cable crossing device for power construction. The device comprises a transport vehicle, a support frame and a mounting table are mounted on the transport vehicle, wherein a lifting mechanism is mounted on the mounting table, a support mechanism is mounted at the top of the lifting mechanism, and a first connecting rod and a second connecting rod are mounted on the liftingmechanism; one ends of the first connecting rod and the second connecting rod are installed on the lifting mechanism, and the other ends are installed on the supporting mechanism. The device only needs to be moved to a working position under the action of a transport vehicle, assembling and disassembling are not needed, the working efficiency is greatly improved, the lifting mechanism can expandthe supporting mechanism, the purpose of crossing obstacles is achieved, erecting of cables is achieved, the lifting mechanism can fold the supporting mechanism, and the device is convenient to use and high in practicability; safety of the device in the transportation process is guaranteed, the stability of the device is guaranteed through the arrangement of the two supporting mechanisms, the situation that the device inclines and even is damaged due to uneven stress in the working process is prevented, and the service life of the device is greatly guaranteed.