8results about How to "Reduce working at heights" patented technology

The utility model provides a kind of sound-absorbing crystal wood board hidden type hanging assembly, including suspension mechanism, the bottom fixed mounting of suspension mechanism is equipped with fixed disc, the both sides of fixed disc are fixedly installed with suspension frame, during the application of this technical solution, its hidden structure by setting suspension mechanism and clamping mechanism, will be arranged in the sound-absorbing crystal wood board body top with the components such as suspension plate, hexagonal sleeve, side frame, limit card group, fixed plate is fixed in the top four corners of board, clamping operation is completed in top, so that during use, connection component cannot be seen from side and below, avoid component bare damage decorative integrity, while board side edge has no any shelter structure, can be directly attached when splicing, need not reserve installation space, to reach the effect of improving decorative aesthetic degree and eliminating splicing gap, solve the problem of side edge component bare, splicing gap influence sound-absorbing performance in prior art.

This invention provides a universal cross bracing structure and construction method suitable for inclined cable tower construction, including a cross bracing body and construction platforms at both ends of the cross bracing body. The cross bracing body includes a standard section and transition sections installed on both sides of the standard section, with non-standard sections at the outer ends of the transition sections. The non-standard sections are hinged to the hinged sections. Both the ends of the non-standard sections and the ends of the transition sections have butt joints. Limiting components are provided on the butt joints of the non-standard sections, and a limiting structure that cooperates with the limiting components is provided on the construction platform, allowing displacement of the non-standard section butt joints only in the horizontal direction, and no displacement in the vertical direction. This invention can adapt to the construction of inclined cable towers at any angle. The cross bracing can provide various length combinations to suit different tower spacing requirements. It is flexible in operation, has few limitations, and the connections between components are convenient, minimizing high-altitude work. Most components are bolted together, making installation and dismantling convenient and construction efficiency high.

A method for constructing connecting shaft passages during the tunnel lining construction stage includes the following steps: A vertical shaft is formed using rotary drilling and mud slurry wall support, with a depth greater than the tunnel bottom; support steel pipes are hoisted into the shaft, and the bottom of the support steel pipes is sealed with concrete; the gap between the support steel pipes and the shaft is grouted and backfilled; a horizontal connecting passage is constructed, connecting the tunnel to the support steel pipes in the shaft; the lining structure is constructed inside the tunnel, requiring openings at the portal of the horizontal connecting passage; after the lining structure is completed, the openings, the horizontal connecting passage, and the shaft are sealed. This method enables the rapid establishment of connecting shaft passages to increase the working face during the lining construction stage of deep-buried long-distance water conveyance tunnels, and features low cost, short construction period, and high safety.

The invention discloses a hoisting device and process for hoisting a large section of a steel box girder, and relates to the technical field of bridge construction, the hoisting device comprises a hoisting mechanism, a welding mechanism is arranged on the outer side of the hoisting mechanism, and the bottom of the welding mechanism is fixedly connected with the top of the hoisting mechanism; the lifting mechanism comprises a bridge, piers are fixedly connected to the bottom of the bridge, pre-assembled sections are fixedly connected to the outer side of the bridge, stand columns are fixedly connected to the tops of the pre-assembled sections, inclined struts are fixedly connected to the outer sides of the stand columns, the tops of the multiple stand columns are fixedly connected with the same lifting platform, and the same lifting platform is fixedly connected to the tops of the multiple stand columns. The top of the lifting platform is fixedly connected with a hydraulic lifter, and the bottom of the hydraulic lifter is fixedly connected with a steel strand. According to the hoisting device and process for hoisting the large section of the steel box girder, the main bridge steel box girder is divided into a plurality of sections, and the middle large section is integrally hoisted and mounted, so that high-altitude scattered splicing is avoided, and the field welding workload is greatly reduced.

The application provides a large-span under-hanging arc-shaped steel truss construction method, which comprises the following steps: firstly, a three-dimensional model is established and construction condition simulation is performed to optimize structure design; then, an adjustable arc-shaped assembling jig frame is erected on the ground, arc-shaped main steel truss assembling is completed on the arc-shaped assembling jig frame, a boom, a conversion beam and an under-hanging structure are installed to form an integrated whole lifting unit; then, a hydraulic synchronous lifting system is installed on the top of a bearing steel column to perform graded lifting and monitoring, and is fixed and installed after lifting in place; finally, graded unloading and structure monitoring are performed, and subsequent structure construction and completion acceptance are performed. The application adopts ground arc-shaped jig frame whole assembling, and the arc-shaped truss is formed at one time, so that linear precision is high, deviation is small, large-area full scaffold is cancelled, materials are saved, space is released, multi-specialty cross operation can be realized, high-altitude operation is greatly reduced, safety risk is reduced, construction efficiency is improved, structure stress is ensured to be uniform, deformation is controllable, and construction quality is stable and reliable.

The utility model discloses a water conservancy project construction fence relates to water conservancy engineering technical field, include: support column subassembly and a plurality of corrugated baffle subassembly, the corrugated baffle subassembly is installed between two support column subassembly, and the bottom between two support column subassembly is installed with yellow board, the rear side of support column subassembly is installed with inclined support subassembly. The utility model discloses a corrugated baffle subassembly is installed from the lower end of the front side of support column subassembly one by one upwards to the top one by one with the corrugated baffle subassembly from the bottom and pushes, improves installation efficiency and reduces aerial work.

This invention provides a bridge-building machine and its operating method, relating to the field of bridge-building machines. The bridge-building machine includes at least two parallel main beams, the ends of which are supported on corresponding traveling devices. Each traveling device includes a traveling beam anchorable to the top surface of the bridge. The traveling device also includes two hanging wheel assemblies, at least two supporting wheel assemblies, and a drive assembly. The drive assembly is mounted on the traveling beam and includes a drive motor and gears, the gears meshing with a rack at the bottom of the main beams. Hydraulic support legs are also provided on both sides of the main beams, capable of supporting the ground. This invention improves the stability and efficiency of the bridge-building machine's movement.

The utility model discloses a kind of construction device for improving the construction efficiency of V-bridge triangle area, comprising: pier seat, bottom connection cushion cap or pier column, form Y-type pier structure;Oblique leg, contain part pier top box girder consolidation section, adopt low-position cast-in-place or prefabricated assembly, and connect with pier seat by vertical hinge;Triangular area top box girder section, through support assembly construction, connect with oblique leg through embedded steel bar, support assembly includes first support and second support;Oblique leg post-cast segment, for closing vertical hinge area, make oblique leg and pier seat form integral force structure;Box girder closure section, connect through rigid frame, complete triangular area integration;Vertical rotation system, for vertical rotation construction of oblique leg;Limiting block, welded on steel bar, prevent vertical rotation overreach.The utility model uses low-lying cast-in-place method to construct oblique leg containing part pier top box girder consolidation section, then V-structure triangular area construction method of vertical rotation and triangular area top box girder section closure, reduce the risk of high-position operation and support overturning.