202results about How to "Reduce the risk of working at heights" patented technology

The invention discloses a mounting method for a steel anchor beam of a cable-stayed bridge and an assembly jig and a cable bent tower mounting platform used in the method. The steel anchor beam and steel corbels are preassembled on the steel anchor beam assembly jig, a hoist is used for replacing the steel anchor beam to hoist the steel corbels and the assembly jig integrally, the steel corbels are positioned and mounted through the steel anchor beam cable bent tower mounting platform on a cable bent tower, and the steel anchor beam is assembled. According to the mounting method for the steel anchor beam of the cable-stayed bridge and the assembly jig and the cable bent tower mounting platform used in the method, construction costs are saved, construction processes are simple and convenient, and accurate adjustment and positioning is facilitated.

The invention discloses a method and a system for measuring the downward inclination angle of a base station antenna as well as devices. The method comprises steps as follows: an unmanned aerial vehicle measurement device hovers on the side surface of the base station antenna according to a flight control instruction of a ground control device; the unmanned aerial vehicle measurement device acquires a real-time image of the base station antenna and returns the image to the ground control device, so that the ground control device recognizes predetermined measurement points; the unmanned aerialvehicle measurement device sequentially measures the distance between a hovering point of an unmanned aerial vehicle and each predetermined measurement point according to a measurement control instruction of the ground control device and records the angle when a cloud deck rotates to each predetermined measurement point via an electronic cloud deck module; the unmanned aerial vehicle measurement device returns measurement data to the ground control device, so that the ground control device obtains the downward inclination angle of the base station antenna according to measurement data. Compared with the prior art, the method and system as well as the devices have the advantages that a measurement worker does not need to climb a base station iron tower to conduct measurement operation, accordingly, the working efficiency is improved, and the risk of climbing operation is reduced.

The invention relates to a technology for measuring and controlling flexible conductors in transformer substation projects, in particular to a three-dimensional simulation, measurement and control system for transformer substation project flexible conductor assembling. The three-dimensional simulation, measurement and control system is a prism-free, total-station-instrument and three-dimensional analog simulation model system and aims at finishing flexible conductor coordinate measurement and computer simulation of the overall three-dimensional space effect and then efficiently and safely finishing on-site conductor installation. An adopted total-station instrument performs contact type measurement, carries on research and verification on a mathematic model of the blanking length of a transformer substation project flexible conductor and designs a conductor three-dimensional space arrangement installation effect picture through a computer. The three-dimensional simulation, measurement and control system has the advantages that the system are used for installation of transformer substation overhead conductors and downleads, and the construction efficiency is improved; the power outage time is shortened and high-altitude construction operation risk is reduced in reconstruction and extension projects; the conductor installing accuracy is improved, and the construction appearance quality is high; a man-machine conversation interface is good, and operation is simple and convenient; the system is good in universality and suitable for various specifications of flexible conductor made of various materials.

The invention discloses a sliding platform and a construction method for separately mounting grid structures on high altitudes. The sliding platform for separately mounting the grid structures on the high altitudes is arranged in an industrial factory building. The industrial factory building is provided with crane beams, and overhead crane tracks are arranged on the crane beams. The sliding platform for separately mounting the grid structures on the high altitudes comprises a grid structure type sliding platform, a scaffold operating platform and pulling equipment. The grid structure type sliding platform is slidably arranged on the overhead crane tracks via a plurality of sliding rollers; the scaffold operating platform is arranged on the upper surface of the grid structure type sliding platform; the pulling equipment is connected onto the grid structure type sliding platform, so that the grid structure type sliding platform can slide along the overhead crane tracks. The mounting quality of the grid structures, with bolt-sphere joints, of the industrial factory building can be sufficiently guaranteed, the time and labor can be saved, and the safety of staffs for constructing the grid structures on the high altitudes and the safety of construction staffs below the staffs can be guaranteed. The sliding platform and the construction method have the advantages of flexibility, convenience, speediness and low cost. Besides, merits can become obvious along with increase of ratios of the longitudinal lengths to the span of the grid structure.

The invention discloses an automatic traction system for large-scale tower-type crane standard-knot removal and installation and relates to the technical field of building construction machinery. The automatic traction system solves the technical problem that the existing traction system for tower-type crane standard-knot removal and installation adopts a manual traction method so that operation carried out by removal and installation operators is difficult and has low efficiency. A traction mechanism (5) of the automatic traction system is installed on a tail of a single-track introduction beam (2). An end of the single-track introduction beam (2) is provided with a leading sheave. The traction mechanism (5) passes through and is wound by a traction steel wire rope (6). A long end (7) of the traction steel wire rope (6) bypasses the leading sheave and then is fixed to an introduction trolley (3) by a rope cappel. A short end (8) of the traction steel wire rope (6) is connected to a rope tensioning device (10) on the introduction trolley (3). An introduction trailer (4) is connected to a standard-knot (9) by steel wire ropes. Two sides of the introduction trailer (4) are respectively provided with lifting lugs (11). Two sides of the introduction trolley (3) are respectively provided with angle steel mount points (13).

The invention provides a construction method with a silo sliding formwork operating platform as a top cover plate formwork supporting system and belongs to the construction and installation field. The construction method comprises performing designing and checking calculation on the silo sliding formwork operating platform; producing the silo sliding formwork operating platform; embedding steel bracket embedded parts into cylinder wall concrete; embedding hanging rings into the cylinder wall concrete; descending the silo sliding formwork operating platform to the design elevation; welding a steel bracket; installing the silo sliding formwork operating platform; installing formwork vertical bars; installing the formwork system; removing the formwork. According to the construction method with the silo sliding formwork operating platform as the top cover plate formwork supporting system, the labor intensity can be reduced, the construction progress can be accelerated, the construction period can be shortened, and the construction potential risk can be reduced.

The invention provides a dry quenching primary deduster fragment hoisting method. The method is characterized by comprising the following steps: a hoisting preparation measures, b fragment assembly and hoisting of a lower frame and installation of cross beams, c ground assembly of fifth and sixth fragment frames of an upper frame, d hoisting of the fifth and sixth fragment frames of the upper frame, e installation of a cross beam at the top, f assembly and hoisting of seventh and eighth fragment frames and g adjustment and welding of the primary dedusting upper frame. The dry quenching primary deduster fragment hoisting method has the advantages of advanced technology, feasible operation, fast construction progress, high work efficiency, substantial reduction of overhead working time and overhead working safety risks and further easiness in control of construction quality.

The invention relates to a deck type arch bridge unbalanced horizontal rotation system and a rotation construction method and aims at effectively controlling construction risk, greatly reducing investment of a large-scale temporary project and enabling rotation construction to be simpler and more convenient, more economic, safer and more reliable. The deck type arch bridge unbalanced horizontal rotation system comprises a heading wall, a hanging wall, a dorsal cord, a buckling cable, a rotational spherical hinge, a traction system and a counterweight water tank, wherein the heading wall is also taken as an arch support foundation and is located on a foundation, and an annular slideway, a jack counterforce seat and traction counterforce seats are arranged on the heading wall; the hanging wall is in charge of supporting a juncture pier and a half-span main arch ring; the upper end of the dorsal cord is anchored at a top cap of the juncture pier, the lower end of the dorsal cord is anchored on the bottom surface of the tail of the hanging wall; the buckling cable and the half-span main arch ring are suspended on the juncture pier by virtue of the buckling cable; the rotational spherical hinge is composed of a lower spherical hinge surface, an upper spherical hinge surface and a locating shaft and is arranged between the heading wall and the hanging wall, and the axis of the locating shaft is located at the center of the spherical hinge surface; the traction system comprises a traction rope and a continuous jack, one end of the traction rope is anchored in concrete of the hanging wall, surrounds a rotary table at the bottom of the hanging wall by 1-2 circles and then passes through the traction counterforce seats distributed on the top surface of the heading wall in pairs to be connected with the continuous jack, and the counterweight water tank is arranged on the top surface of the tail of the hanging wall.

The invention discloses a suspension bridge beam prefabricating and assembling construction process. A lower-layer beam serves as an operation platform, an upper-layer beam is prefabricated, and the prefabricated beams are lifted to set positions through a lifting system arranged above the upper-layer beam and then assembled. The construction process has the advantages of being small in operationrisk, short in construction period and low in construction cost.

The invention provides a method for integrally mounting a hinge device of an extra-large sector gate. Integral mounting of the hinge device is realized through torque balance between power (balance weight end) and resistance (trunnion end) by utilizing the lever principle, namely, a thick-walled steel tube is connected on the movable hinge side to serve as a balancing lever and the other end of the lever is provided with balance weight. A 300-ton lorry-mounted crane is adopted to lift a gravity center position of a trunnion to lift the hinge device, a 130-ton lorry-mounted crane is adopted to lift a balance weight position, the cranes lift lifting hooks to change power of the balance weight end to realize aloft unmanned adjustment of hinge mounting angles, a 20-ton chain block is hung between a lifting lug arranged at the hinge end and a lifting hook of the 300-ton lorry-mounted crane to adjust balance of the left side and the right side of the hinge, four lifting lugs are pre-embedded on pre-embedded hinge bolt surfaces to serve as towing points for hinge entering bolts, and towing tension generated by four 10-ton chain blocks are matched with thrust generated by stretching of the 130-ton crane to pull the hinge integrally. The problems of large difficulty in integral mounting of the hinge device, high mounting and control size accuracy and potential safety hazard of aloft working are solved; and mounting quality is improved and construction speed is increased.

The invention belongs to the technical field of bridge erection, and discloses a wide-body double-width bridge erecting machine and an erecting method thereof. According to the wide-body double-widthbridge erecting machine, a left steel beam and a right steel beam can be erected at the same time under the condition that the position of a bridge erecting machine main body is not changed. The wide-body double-width bridge erecting machine comprises a main beam, a four-front supporting leg system, a middle supporting leg and a tail supporting leg; and the four-front supporting leg system comprises four same front supporting legs and a front supporting leg cross beam, the front supporting leg cross beam is arranged on the main beam, so that the left steel beam and the right steel beam can beerected by the bridge erecting machine at the same time, therefore, rapid hoisting of the steel beams is realized. According to the wide-body double-width bridge erecting machine, the erecting construction is performed; the additional stress generated due to the fact that the front cross beam is arranged later is avoided, so that the stress state of the steel beams in the bridge forming process isthe same as that of the design; the aerial operation risk is reduced, so that the safety and reliability of the bridge erection construction are improved; the front cross beam is arranged in a steelbeam assembly field, so that the construction progress is accelerated; and the left steel beam and the right steel beam can be hoisted at the same time, so that the working efficiency of the bridge erecting machine is improved.

The invention relates to a construction method for laying a suspension bridge catwalk. After erecting and sag adjusting of catwalk load-bearing cables and catwalk portal load-bearing cables are completed, the process of laying a catwalk surface layer is carried out, a basket is installed at the portions, closest to a bridge, of the load-bearing cables through a support, and steel wire gauze slices, anti-skidding planks and other needed facilities are lifted and placed in the basket through a lifting device. The basket serves as a stacking platform and also serves as an operating platform used for installing the steel wire gauze slices and the anti-skidding planks. A winch is installed on a tower, the steel wire gauze slices installed by workers are sequentially lifted in the mode that the winch winds steel wire ropes, and every time the steel wire ropes move by the distance of one steel wire gauze slice, the workers install one new slice and connect the new slice with the former slice, so that laying of the catwalk gauze face from the lower end to the upper end is completed. Similarly, laying of the other side is completed with the method.

The invention relates to a method for observing support cast-in-place beam preloading by utilizing a reflector. The method mainly comprises the steps of fixing the reflector at the position to be observed, inputting an elevation in a measuring instrument, observing and recording coordinates and elevations of the reflector before and after preloading, and calculating the displacement of a support structure according to changes of coordinates and elevations of the reflector before and after preloading. The method has the advantages that settlement observation of support preloading in the large-span high cast-in-place beam construction is achieved; settlement is observed accurately on the premise that constructors are not required to enter preloading fields; the safety of constructors is guaranteed; the measurement is convenient, stationing is easy, places where prisms cannot arrive easily can be observed freely, and the high-altitude operation risks of measuring staff are reduced.

Provided is a high-altitude test clamp for deformation of a transformer winding. The test clamp comprises a binding clip composed of an upper jaw and a lower jaw, an insulated operating rod arranged in the bottom of the binding clip and a lead rod arranged under the lower jaw. The high-altitude test clamp based on a frequency response method is provided with a special-purposed wiring clamp to connect and fix test wires, and the wiring clamp uses a BNC joint to ensure effective work of signal, input and shielding ends. The portable special-purposed insulated operating rod realizes wiring. The angle of the binding clip of the wiring clamp can be changed to complete wiring work of different angles, thicknesses and diameters of wiring positions, and high-altitude work is avoided.

The invention discloses a multi-gear vibrating wire type bolt state monitoring device and a using and recognizing method thereof. The device comprises a cable, a clamping groove, a shell, a vibratingwire, a suction block, a nut clamping ring, a bearing platform, a magnet coil, a connecting rod, a middle shaft, a base and a spring. The bolt looseness monitoring purpose is achieved based on the principle that the vibration frequency of the strings changes along with the change of the tension of the strings, and the four vibration wires are arranged and correspond to four gears with different sensitivities respectively so as to meet different monitoring requirements. After the device is connected with a to-be-monitored bolt, the initial inherent frequency of the string is measured to be omega 1; when the bolt is loosened to generate angle change, the tension of the string is changed, and the vibration frequency of the vibrating wire at the moment is measured to be omega 2; and the absolute value of the vibration frequency difference is calculated to serve as a loosening index, and the bolt connection state is evaluated. The device is calibrated by measuring the relative relation between the pre-tightening force of the bolt and the vibration frequency of the string: and a bolt early warning force threshold value is determined according to bolt design and detection standards.

The invention provides a storage tank structure and an installation method thereof, and relates to the technical field of storage tank equipment. The storage tank structure comprises a tank body and installation upright posts; the tank body is of a columnar structure, and the installation upright posts are arranged inside the tank body, so that a side plate of the tank body can be stably acted through the installation upright posts; furthermore, hoisting devices are arranged at the tops of the installation upright posts, and the hoisting devices can be used for hoisting the installation of wall plates and top plates; the installation upright posts in the storage tank structure and the hoisting devices installed on the installation upright posts can play a hoisting role, so that large hoisting equipment similar to a crane does not need to be used again, and the installation cost is saved; the technical problems that in the prior art, a storage tank installation structure borrows more equipment and is high in engineering cost are solved; and the installation quality can be effectively guaranteed, the construction efficiency is improved, the construction period is shortened, the investment of people, materials and machines is reduced, the construction cost is reduced, and the high-place operation risk is reduced.

The invention relates to the field of inspection of welding joints in large containers in installation processes of nuclear power stations, petroleum, chemical engineering and the like, in particular to a travelling device for a welding joint radiological inspecting machine, which comprises a sliding part, a bearing part, a connection part and a traction part. The sliding part abuts against the upper end and two sides of the wall of a container from the upper portion and two sides and can slide along the wall of the container. The bearing part bears and fixes the welding joint radiological inspecting machine and is provided with a sliding structure sliding along the wall of the container. One end of the connection part is connected with the sliding part, and the other end of the connection part is connected with the bearing part. The traction part leads the sliding part and the bearing part which are connected through the connection part to slide circumferentially along the wall of the container. The travelling device can reduce safety hazards of personnel and devices, improve quality and efficiency of radiological inspection, and shorten working period.

The invention belongs to the technical field of nuclear power construction and particularly relates to a construction method for connecting ring crane bearing rail beams and brackets. The problems that in the prior art, when the ring crane bearing rail beams and the brackets are connected, the construction efficiency is low, and connecting accuracy is low are solved. The connecting method of the ring crane bearing rail beams and the brackets comprises the steps that S1, after the brackets are fixedly mounted in the high place, the ring crane bearing rail beams are directly hoisted to the brackets, and the ring crane bearing rail beams are assembled and adjusted in position on the brackets; S2, according to the positions of connecting holes in the ring crane bearing rail beams, corresponding bolt holes are directly drilled in the brackets in a matched mode; and S3, after the bolt holes are drilled and machined in the brackets in the matched mode, the ring crane bearing rail beams and the brackets are connected for fixing directly through bolts. The ring crane bearing rail beams and the brackets are connected through the method, the construction period can be shortened, the construction efficiency is improved, and the connecting accuracy can be improved.

The invention relates to an insulating bracket, which is used for supporting a test lead wire arranged on a supporting object and comprises an insulation supporting piece, an insulation clamping pieceand an insulation fixing piece, wherein the insulation supporting piece is used for supporting the test lead wire, the insulation clamping piece is connected to one end of the insulation supporting piece, the insulation clamping piece is constructed to be used for clamping the supporting object, and the insulation fixing piece is detachably connected to the other end of the insulation supportingpiece and used for positioning the test lead wire to the insulation supporting piece. According to the invention, by arranging the insulation clamping piece, the insulation supporting piece is fixed on the supporting object to replace manual supporting of the test lead wire by the insulation rod so as to reduce the physical exhaustion of the worker and reduce the risk of long-time climbing operation, and by arranging the insulation fixing piece, the test lead wire can be stabilized on the insulation supporting piece, so that the test accuracy is improved, and the situations of equipment damageand personnel injury caused by falling of the test lead are prevented.

The invention provides an overall installation device for a power double cross arm assembly. The device comprises a longitudinal strut, a transverse strut vertically disposed at an upper portion of the longitudinal strut, a holt hoop iron which is rotatably disposed at a lower portion of the longitudinal strut and is used for fixedly connecting with wire poles, and a bracket which is disposed between the transverse strut and the holt hoop iron, is in rotation lifting up and down connection with the longitudinal strut along the length direction of the longitudinal strut and is used for supporting double cross arms and taking the double cross arm assembly to move up and down, wherein a hanging member for hanging a traction rope is disposed on the transverse strut. The invention further provides an overall installation method for the power double cross arm assembly. The device is advantaged in that technical problems of long power-off time and large construction intensity of workers of the wire poles existing in the cross-arm installation technology in the prior art are solved.

The invention discloses a multifunctional live overhauling device which comprises a stand, a lifting mechanism, a fixed mechanism, a rotation motor, a pitching motor, a rotation regulation mechanism and a pitching regulation mechanism, wherein the fixed mechanism is fixedly arranged on the stand, and is detachably and fixedly mounted on a transformer substation equipment stand; the rotation regulation mechanism comprises a rotating seat, the rotating axis of the rotating seat and the lifting mechanism is the horizontal axis X, and the rotation motor is in transmission connection with the rotating seat to drive the rotating seat to rotate along the vertical axis and further drive the lifting mechanism to rotate along the vertical axis; the pitching motor is in transmission connection with the pitching regulation mechanism, and the pitching regulation mechanism is connected with the rotating seat and the lifting mechanism to control pitching regulation of the lifting mechanism relative to the horizontal axis X through the pitching motor; an insulating rod is arranged at the uppermost end of the lifting mechanism, and multiple sets of functional devices are additionally assembled, and are all provided with connecting structures which can be detachably connected to the insulating rod. The multifunctional live overhauling device has the advantages that live operation can be carried out, the power outage time of equipment can be reduced, economic benefits can be improved, and aloft work risks can be reduced.