6results about How to "Avoid eccentric force" patented technology

The invention discloses a rapid assembly welding construction method for boiler steam blowpipes. The method comprises the steps that small-pipe-diameter and large-pipe-diameter welding auxiliary structures are manufactured, pipelines are hoisted to the installation position for butt joint, the corresponding welding auxiliary structures are selected according to the pipe diameters so that pipe openings of the pipelines can be aligned and preliminarily welded and positioned, and final butt joint welding is completed after the auxiliary structures are dismantled. An auxiliary mounting and welding structure of the automatic screwing device is further manufactured, and the device enables a screwing driving mechanism to be in butt joint with a connecting bolt, a nut or an adjusting bolt by adjusting the positions of all parts and drives the screwing driving mechanism to rotate. According to the assembly welding device, the technical effects of quickly and accurately completing assembly welding of the boiler steam blowpipes and improving the construction efficiency and quality are achieved.

This utility model relates to the field of rebar cage hoisting technology, specifically a rebar cage integral hoisting device, including a mounting plate. Several slide rails are fixedly connected at equal intervals on the lower surface of the mounting plate. A slider is slidably connected to each slide rail. A fixing plate is fixedly connected to the lower surface of each slider. A hook is provided at the lower end of the fixing plate. A drive motor is installed at the center of the upper end of the mounting plate. The output end of the drive motor passes through the mounting plate and is provided with a disc. Several push-pull rods are rotatably connected at equal intervals on the disc. The other end of each push-pull rod is rotatably connected to the fixing plate. This utility model solves the problems of rebar cage falling from heights during existing hoisting processes, and the inability to guarantee the verticality of the rebar cage after hoisting, making it difficult for a tilted rebar cage to enter the pile hole.

The embodiment of the application provides a kind of multi-station press balancer air pressure's adjusting method, system, equipment and medium, belong to multi-station press field.It includes: the mass parameter of the mould on each station of multi-station press, center of gravity offset, the structural parameter of balancer, the distance from balancer to slider center, no-load air pressure and safety air pressure parameter;According to the above parameters, the required off-load compensation force of balancer is calculated, and the target air pressure value required by balancer is calculated in combination with no-load air pressure;And based on target air pressure value and safety air pressure parameter, determine the upper and lower limit of air pressure;The actual air pressure value of left and right balancer is collected in real time by pressure sensor;And compare actual air pressure value with air pressure upper and lower limit, based on operating state and comparison result control air intake or exhaust.Can realize the automatic compensation of multi-station press off-load, avoid the eccentric force of slider caused by the weight difference of mould, improve the running safety, stability and die changing efficiency of press.

The utility model relates to the field of quality improvement and reconstruction of existing buildings in urban renewal, and aims to provide a horizontal limiting device for an existing structure stress conversion support, which comprises an existing bottom plate, an existing underpinning part and an existing wall column, a temporary support used for bearing the load of the existing underpinning part is arranged on a jacking part of the hydraulic jack in a supported mode, a plurality of horizontal limiting assemblies are arranged in the height direction of the existing wall column at intervals, and transverse limiting rods in one-to-one correspondence with the horizontal limiting assemblies are arranged in the height direction of the temporary support; one end of the transverse limiting rod is fixedly connected with the temporary support, the other end of the transverse limiting rod is fixedly provided with a steel connecting piece, and the steel connecting piece is in longitudinal sliding fit with the horizontal limiting assembly. According to the utility model, the stability, reliability and safety of the existing structure in the stress conversion process can be enhanced, the implementation is easy, the manufacturing cost is low, and the applicability is wide.

The utility model relates to a complex dynamic loading test device for an offshore structure, which is suitable for the technical field of test equipment for ocean engineering, hydraulic engineering and civil engineering. The test device comprises a model box used for loading a soil sample; the axial loader is mounted on the rack and can be used for applying an axial load to a sample inserted into the soil sample in the model box; the radial loader is mounted on the rack and can be used for applying a radial load to a sample inserted into the soil sample in the model box; the torque loader is mounted on the rack and can be used for applying torque to a sample inserted into the soil sample in the model box; the torque loader comprises a loading arm, the axis direction of which is perpendicular to the axis direction of a sample, the first end of which is provided with a mounting hole, and the second end of which is connected with a rotation driving assembly and a guide assembly; the loading head is provided with a clamping groove and a mounting part, the mounting part can be matched with the mounting hole in the loading arm to realize connection, and the clamping groove can be matched with a clamping part on the sample.

The present application belongs to the technical field of material mechanical property testing, in particular to a universal testing machine adaptive epoxy resin multi-specification sample clamping detection tool, which comprises a testing machine main body, a fixed integrated plate fixedly connected to the upper surface of the testing machine main body, a moving integrated plate slidingly connected to the outer surface of the guiding component of the testing machine main body, and a tool assembly arranged on the opposite side surface of the fixed integrated plate and the moving integrated plate. Each tool assembly comprises, from top to bottom, a standard connecting joint, a floating self-centering mechanism, a synchronous bidirectional clamping mechanism, and a replaceable composite jaw module. The universal testing machine adaptive epoxy resin multi-specification sample clamping detection tool sets a floating self-centering mechanism, adopts cross staggered guide grooves and four sets of floating blocks to cooperate, and is arranged in layers and orthogonally with an axial linear slide rail and a radial linear slide rail, realizes two-dimensional floating adjustment motion decoupling in the horizontal plane, and can provide sufficient rigid holding force through the disc spring set after centering.