452results about How to "Avoid working at heights" patented technology

The invention discloses a high voltage grounding tool for power maintenance, which comprises a grounding wire chuck and an operating rod, wherein the wire chuck comprises a C-shaped hanging frame, a wire clamp moving plate and a lifting rod; a connector connected with the C-shaped hanging frame is arranged at the top of the operating rod; the upper end of the lifting rod is connected with the wire clamp moving plate; a driving mechanism connected with the lifting rod is arranged in the operating rod; the operating rod is arranged in a multi-section insertion manner; locking rings are arranged among sections of the operating rod; reducer pipes are arranged among sections of a movable casing pipe; elastic pins or key structures matched with the movable casing pipe are arranged on the reducer pipes. According to the invention, the high voltage grounding tool is hung on a wire by utilizing the C-shaped hanging frame; the wire is clamped by adopting the lifting rod; the wire-off accident is prevented; the low-position safe operation is realized; the potential safety hazard caused by the climbing operation is avoided; the working difficulty is reduced; the working efficiency is improved; the sectional design concept is adopted; the flexible variation of the length of the operating rod is ensured; in the transmission link, the interchangeable connection can be carried out; the effects are obvious.

The invention provides a socket type self-returning multi-section prefabricated pier and an assembly method thereof. The multi-section prefabricated pier comprises a bearing platform and the prefabricated bridge pier, wherein the prefabricated pier comprises a inserting bearing platform section, a plurality of pier body sections, a prestressed tendon, and energy dissipation ribs; the assembly method comprises the following steps that the prefabricated pier is prefabricated; a horizontal assembly method is adopted in a prefabricated factory, and the prestressed tendon is tensioned to enable allthe sections to be connected into a whole; and high-strength non-shrinkage cement slurry is injected into a pier grouting sleeve through grouting holes. On the site, the pier is lifted and is inserted into a pier installing hole, so that a certain gap is kept between the outer wall of the inserting bearing platform section and the inner wall of the pier installing hole; and after the prefabricated bridge pier is positioned, a guide pipe is inserted into the bottom of the gap, the high-strength non-shrinkage cement slurry is injected into the bottom through the guide pipe, and the slurry is discharged from bottom to top until the gap between the inserting bearing platform section and the pier installing hole is completely filled.

A device that is convenient for drilling holes in the ceiling and installing expansion bolts, including a base, on which a lifting device is fixed, the top of the lifting device is rotatably connected to a rotating platform, and both sides of the upper part of the rotating platform are respectively fixed with drilling devices and expansion bolts Installation device, the expansion bolt installation device is plugged with a clip-type feeding device; the base is placed on the ground; the lifting device is used to drive the rotating platform to move up and down; the rotating platform is driven by the first driving device to rotate; the drilling device includes a drill bit; The bolt installation device includes a conduit. The upper end of the conduit is lower than the upper end of the drill bit. The inner hole of the conduit only allows an assembly formed by a countersunk bolt and an expansion tube to pass through. The conduit and the drill bit are symmetrically arranged on both sides of the rotating platform, and a roof is fixed below the conduit. The output device; the clip-type feeding device has multiple assemblies built in, and the clip-type feeding device is used to sequentially transport multiple assemblies between the conduit and the ejector device. The operation of the equipment is simple, efficient and safe.

The invention discloses a multiplication-variable hook device, comprising a hook, a fixed pulley bracket, a movable pullet bracket, a first pulley, a second pulley and a third pulley, wherein the hook is fixed on the movable pullet bracket, the first pulley is fixedly connected with the fixed pulley bracket, the second pulley and the third pulley are symmetrically fixed on the movable pullet bracket, and the second pulley, the first pulley and the third pulley are sequentially wound via a raising line. The hook device overcomes the deficiencies in the prior art, has no need of replacing the hook and putting the raising line through again, and can prominently complete multiplication conversion only by raising the multiplication-variable hook device to a top fixed end and then putting a pin through a pin hole of the top fixed end, thus saving a large amount of manpower, materials and time in particular and greatly enhancing efficiency; in addition, due to the installation of an automatic pin-through device and devices fitted therewith, high-altitude operation by workers is totally avoided so as to prevent the occurrence of accidents.

The invention discloses a special construction method for a main beam of a lower dragging extra-large bridge, which comprises the following steps of: S02: 0 # section construction: pouring twice, andforming a support by once pouring; s03, hanging basket construction is conducted, specifically, a hanging basket is moved forwards to the front end of the zero beam section, and the formwork erectingelevation is determined; and erecting a formwork to bind the No.1 beam section steel bars and finish the arrangement of the prestressed pipeline. Aiming at the conditions that the span of a main beamis 200 m, the length of double cantilevers is large, the width-to-span ratio of a box girder is small, and the construction technical difficulty is large when the construction period goes through strong wind seasons and winter, smooth construction is guaranteed, and good practicability is achieved.

The invention discloses a method for constructing a stiff supporting dome structure, and relates to the field of buildings. The method for constructing the stiff supporting dome structure includes firstly mounting an inner central draw ring and ridge ropes; secondly, mounting inner ring rods, and sequentially mounting inner sway rods and middle struts from top to bottom according to nodes; thirdly, mounting outer ring rods, integrally tensioning and lifting outer ridge ropes and tool ropes of middle sway rods, and mounting the middle sway rods and outer struts; fourthly, integrally tensioning and lifting the outer ridge ropes and tool ropes of outer sway rods and connecting the outer ridge ropes and the outer sway rods with ring beams; fifthly, tensioning the outer ridge ropes so that the appearance of a structure reaches design requirements; and sixthly, laying films to complete construction. The method for constructing the stiff supporting dome structure has the advantages that characteristics such as easiness in positioning of rods of the structure are sufficiently utilized, and the structure is integrally lifted and symmetrically mounted sequentially from inside to outside and from top to bottom according to the nodes and is tensioned and formed at one step; the rods are mounted on the ground or on an operation platform, so that aerial operation is avoided; and the rods are constantly lifted, and are prevented from being tensioned and released repeatedly.

The invention discloses a jacking construction method for an assembled-type external elevator shaftway structure. The jacking construction method comprises the steps that a foundation pit is excavated, and reinforced concrete foundations and pre-buried connecting components are made; a jacking guiding device is mounted on an existing building, and a jacking device is mounted at the bottom of the foundations; a jacking monitoring device is mounted on an assembled elevator shaftway top layer structure unit to conduct jacking operation of the top layer structure unit, the jacking operation stateis monitored in real time, and torsion or inclination of the structure is prevented cautiously; assembling and jacking of structure units of all standard layers are conducted in sequence, and a first-layer structure frame is mounted; equipment is dismounted, and an elevator shaftway and the existing building are connected through flexible connecting components layer by layer; construction of a roof, all layers of floors, partition plates and the first layer is conducted; and finally, an elevator is mounted. By adopting the jacking construction method, the occupied area is small, the period isshort, the efficiency is high, labor force is saved, heavy transportation vehicles and large lifting equipment are not needed, a scaffold does not need to be set up on site, and high-attitude operation and the influence on the daily life of residents can be reduced significantly.

The invention relates to an installing method of a roof mast. The method comprises the following steps: firstly, lifting up a whole steel tube assembly by a windlass; and stopping the windlass when the bottom of the steel tube assembly reaches a base of the lowest place; secondly, connecting a pair of hand-drive block stringers to an outermost layer of steel tube and lifting up or down the steel tube assembly in an alternative working manner in order to fine adjusting the height of the steel tube assembly till the outermost layer of the steel tube is arranged at the base of the lowest place and a base of the lower place, and then keeping the position of the steel tube assembly and welding and fixing the steel tube assembly; connecting the hand-drive block stringers to an innermost layer ofsteel tube in the steel tube assembly, lifting up the innermost layer of the steel tube in an alternative working manner, and stopping the lifting when the length of the sleeved part of the lower endof the innermost layer steel tube and the upper end of an inner layer steel tube sleeved on the innermost layer steel tube is ranged from 0.3-2 m, and then welding and fixing the innermost layer of the steel tube with the inner layer of steel tube; and finally, repeatedly lifting up and welding each remained section of steel tubes sleeved in the outermost layer of the steel tube, and then finishing the installation of the roof mast.

The invention discloses an electric leakage detection device. The electric leakage detection device comprises a detection terminal, an insulated extension rod and a control terminal in wireless communication with the detection terminal, wherein an installation connector is connected between the detection terminal and the insulated extension rod; the detection terminal comprises a machine body; a detection module is arranged at the middle part of the machine body; a clamp is retractably arranged at the front end part of the machine body; a reset piece is clamped and connected between the inner end parts of two clamp bodies of the clamp; the control terminal comprises a handheld machine; the handheld machine is provided with a display screen and a keyboard. The electric leakage detection device disclosed by the invention is capable of safely and efficiently implementing electric leakage detection under different working conditions.

The invention relates to petroleum drill and exploitation equipment, in particular to an automatic discharge device for drill strings. A top drive is arranged at the top of a derrick, a two-layer platform is arranged in the middle, and a drill floor is arranged at the lower part; a stand platform is connected to the drill floor; an upper manipulator is connected to the two-layer platform and can move on the two-layer platform; a lower manipulator support is connected to the stand platform; a lower manipulator is connected to the lower manipulator support and can move on the lower manipulator support. The device can grip, move and discharge the drill strings automatically, reduces the labor intensity of workers, and is high in mechanical degree, safe to operate and applicable to various drilling platforms.

The invention discloses a method for mounting reinforcing steel bars of tower columns of cable-stayed bridge towers. The method comprises the following steps: (1) arranging a tower crane on one side of a foundation platform of each tower along the axis of a bridge deck, and arranging two assembly jig frames, close to the corresponding tower crane, of each of two sides of the axis of the bridge deck; (2) pre-assembling reinforcing steel bar sections of the tower columns one by one in each assembling jig frame; (3) hoisting the first assembled reinforcing steel bar section as a first reinforcing steel bar section to the top end of the foundation platform of each tower and carrying out aligned connection, and then taking the reinforcing steel bar section as a frame to cast concrete; (4) aligning and connecting a next reinforcing steel bar section to the top end of the reinforcing steel bar section on which the concrete is cast, and taking the newly connected reinforcing steel bar section as a frame to cast concrete; (5) repeating the step (2) and the step (4) till finishing the mounting of the tower columns. According to the method disclosed by the invention, the construction efficiency of tower mounting is effectively improved, the construction quality is also effectively improved, and meanwhile, the construction safety is ensured.

The invention relates to a down locating circle ingot spinning filament lapping yarn device that belongs to lapping yarn technology field. It is made up of roving supporting structure, filament cake supporting structure, four bar strain structure, and spinning frame stretching structure. The filament cake supporting structure is located under the spinning frame. The roving of the roving supporting structure is actively connected to the spinning frame stretching structure. The filament of the filament cake supporting structure connects to the spinning frame stretching structure. The advantage of the invention is that the efficiency and quantity would be improved, the waste of filament and cotton would be decreased, and consumption would be declined; the structure is simplified and the cost is lowered, etc.

The invention discloses an aging-resistant flame-retardant power cable mobile detection platform, which comprises two parallel main frame rods. Two ends of the two main frame rods are connected through a lead device; and the main frame rod is fixedly provided with a stabilizing disc, a fixing ring, stretching rods and front driving structures. When the cable is detected, the cable is clamped by aguide wheel and a pressing wheel at the end of the main frame rod, so that the cable in the detection platform is in a tight state. Two stretching rods guides the cable to be away from the main framerod, the cable passes through a mounting ring, enough space is thus left around the cable for mounting multiple cameras, and the surface of the cable can be observed in all directions. The front driving structure mounted at one end of the main frame rod drives the whole mobile detection platform to move on a high-altitude cable, a carding tube is driven to rotate, the surface of the cable passingby is cleaned, the impact of surface pollutants on observation results is reduced, the detection platform moves on the cable by the self power, and long-time high-altitude operation by a worker is avoided.

A light-emitting type digital display furnace roller precision measurement device provided by the present invention comprises an examination shaft, dial indicators, a frame-type gradienter, a connection swinging rod and a digital display dial indicator. The two dial indicators are connected with the examination shaft movably, the center lines of the measuring rods of the dial indicators are parallel with the shaft center line of the examination shaft, and the frame type gradienter is arranged on the outer circumferential wall of the examination shaft. One end of the examination shaft is connected with a roller shaft of a furnace roller detachably and coaxially, and the other end is connected with the lower end of the connection swinging rod vertically. A contact type indicating lamp is arranged on the upper end face of the connection swinging rod, the upper end of the connection swinging rod is connected with a cross bar connected with the digital display dial indicator, and a switch circuit of the contact type indicating lamp is connected with the digital display dial indicator and a reference steel wire separately. The light-emitting type digital display furnace roller precision measurement device can measure the efficiency and the precision, enables the labor intensity of workers to be reduced, can eliminate the potential safety hazards, and can effectively relieve the problem that there is not existed enough time to overhaul a travelling crane annually.

A bridge inspection device capable of transmitting videos in real time comprises a telescopic support, a connection rod, pulleys, ropes and a camera. The middle of the telescopic support is connected with the connection rod, and the other end of the connection rod is fixed to a car. An upper clamping opening and a lower clamping opening are formed in the upper end of the telescopic support, a vertical turning rod is placed into the upper clamping opening and locked and connected through the upper clamping opening, and a vertical supporting rod is arranged in the lower clamping opening in a sleeved mode and locked and connected through the lower clamping opening. The bottom of the vertical supporting rod is connected with a horizontal rod through a triangular frame, and the horizontal rod is provided with a track. A camera supporting sliding block is arranged in the track in a sleeved mode. The horizontal rod, the vertical supporting rod and the vertical turning rod are all provided with the pulleys and the ropes. The camera supporting sliding block is connected with the ropes and can slide on the track along with the ropes. According to the bridge inspection device, work high above the ground is avoided. The bridge inspection device has the advantages that the safety is high, the economy performance is good, complete coverage of the inspection range is achieved, real-time transmitting, recording and tracing can be achieved, the weight is light, disassembly and assembly are easy, carrying is convenient and operation is flexible.

The invention relates to a sectional sliding roof steel truss assembling method. The method is characterized by including the following steps of building a construction platform (5), preparing steel truss basic component units (24), installing first piston shoes (20) and second piston shoes (21), installing support trusses (2), installing longitudinal main trusses (22), installing transverse main trusses (23), lifting, assembling and transversely connecting the steel truss basic component units (24), sliding sectional steel trusses (1), putting the sectional steel trusses (1) in position, assembling the other sectional steel trusses (1), sliding the other sectional steel trusses (1), putting the other sectional steel trusses (1) in position, connecting transverse rods among the sectional steel trusses (1), disassembling second piston shoes (21) and sliding rails (3), and disassembling the construction platform (5). The method belongs to the field of steel structure engineering, roof steel trusses are prepared in sections and put in position by sliding, the problems that roof window construction time of an existing operating railway is short and difficulty of the construction is large are effectively solved, the construction efficiency is improved, and when applied in practical engineering, the method can obtain good technical and economic benefits.