36results about How to "Solve the problem of not being able to install" patented technology

The invention discloses a welding method for a two-layer pipe elbow. The two-layer pipe elbow comprises an inner straight pipe, an inner pipe elbow body, an outer straight pipe and an outer pipe elbow body. The inner diameter of the outer pipe elbow body is larger than the outer diameter of the outer straight pipe. The two sides of the outer pipe elbow body are provided with different-diameter connectors which are connected with the outer straight pipe. The problem that the two-layer pipe outer straight pipe cannot be installed is solved on the basis of the welding method for the two-layer pipe elbow. According to the welding method for the two-layer pipe elbow, the two-layer pipe elbow is reasonably divided into three parts, that is, the elbow body with an enlarged diameter and the two different-diameter connectors (welded to the outer straight pipe in an overlap mode), and thus the problem that the inner straight pipe cannot be welded is solved; and meanwhile, the outer pipe elbow body can be welded at last, and a space is easily transferred out by the outer pipe elbow body through moving of the different-diameter connectors on the outer straight pipe.

The invention provides an air inlet thermal-insulated device of kitchen tool, with simple installment and energy-saving property, for balancing the inner and outer pressures of room and eliminating the indoor smoke, and insulating the generated high temperature of kitchen tool and indoor room, to reduce the hot and cold air consumptions.

The invention relates to a tower type truss installing structure and a tower type truss installing method without cooperation with altitude hoisting equipment. The method comprises the step of overlapping a plurality of truss standard knots from bottom to top, wherein each truss standard knot consists of a plurality of vertical chord members (1 and 4), and the chord members (1 and 4) are fixedly connected with each other by web members (2 and 3). The structure and the method disclosed by invention are characterized in that one chord member (4) of the tower type truss is concurrently taken as a climbing rack and an attaching support for an assistant crane, and the chord members (1 and 4) and the web members (2 and 3) of the tower type truss are installed by the assistant crane attached on the chord member (4), so that the assistant crane can continuously climb along the chord members without the cooperation with the other hoisting equipment. According to the invention, the difficulty that a tower type truss can not be installed when the altitude hoisting equipment is unavailable can be solved, and a mass of installing cost can be saved, so that the tower type truss is applicable to the occasion without the altitude hoisting equipment, and the convenience degree for the distribution of engineering equipment can be greatly improved.

The invention discloses a door body. The door body comprises a handle assembly and a door body frame; the handle assembly is connected to two special-shaped through holes formed in the door body frame by use of two connecting columns; annular grooves are formed in one end, inserted into the special-shaped through holes, of the connecting columns; the outer diameter of the annular groove part of each connecting column is matched with the outer diameter of the small-diameter end of the corresponding special-shaped through hole, while the outer diameter of the parts, at the two sides of the annular groove, of the connecting column is greater than the outer diameter of the small-diameter end of the corresponding special-shaped through hole and small than the outer diameter of the large-diameter end of the special-shaped through hole; the other ends, inserted in the handle assembly, of the connecting columns are fixedly connected with the handle assembly; the two special-shaped through holes in the door body frame are arranged in a mirror symmetry way, the space between the centers of the two large-diameter ends is greater than that between the centers of the two small-diameter ends, and the space between the centers of the two small-diameter ends is matched with the mounting space between the two connecting columns on the handle assembly. The door body is used for solving the problem that the mounting fails due to de-concentricity of the handle holes, and the handle is adjustable in position and convenient to detach and replace.

A parallel stage separation free flight wind tunnel testing device with the mass center located on the interface comprises a first model, a second model, a pull pin frame, pins, a first fixing nail, asecond fixing nail, a first spring, a second spring, a first pull pin and a second pull pin. The first pull pin, the second pull pin and the pull pin frame are installed together through the two pins, the first fixing nail and the second fixing nail penetrate through respective springs and are inserted into the first model and the second model, and the pull pins installed just are inserted into the models from the model tails and are just inserted into a round hole formed by a semi-circular groove of the first fixing nail and a round hole formed by a semi-circular groove of the second fixingnail to lock the whole model set. It is ensured that the first model and the second model can be fast and effectively separated without interference, the problem that a parallel stage separation freeflight wind tunnel test with the mass center located on the interface cannot be realized is solved mainly, and the defect that two stages cannot release the freedom degree at the same time due to theprevious model fixing mode is overcome.

The invention relates to a hood structure of a high speed train headstock and an installation method. The hood structure consists of an upper hood and a lower hood, wherein the upper hood is connected with the lower hood through a plugging structure in a plugging manner, and the upper hood and the lower hood are respectively fixedly connected with a train body and / or train body accessory. The hood structure is simple in structure, the hood is divided into the upper hood and the lower hood, which are connected with each other in a plugging manner, the overall appearance effect is good, the entire structure is easy to install and disassemble, the upper hood and the lower hood can be placed into the train to run along the train after being disassembled, so that a link function and a rescuing function of the train can be realized. In addition, the hood can be installed externally, so that the problem that the hood cannot be installed due to the limited installation space inside the train body can be solved.

The invention discloses a low-voltage multipurpose short-circuit connector, comprising fixing clamps, flexible jumping wires and a short-circuit connecting member, wherein each fixing clamp comprises a conductive fixing member and a conductive adapting member; each of the flexible jumping wires is a conductive braided strap; each of two ends of each conductive braided strap is provided with a connecting hole; the short-circuit connecting member comprises a back plate which is made of a material with an insulating arc-isolating effect and is used for fixation; the back plate is provided with installation holes which are adapted to fuse wires with different pitches and the size of a base; the fuse wires are arranged on the base. In the field application, the low-voltage multipurpose short-circuit connector disclosed by the invention can be used as an effective measure for quickly repairing and recovering electric power after switches with different models and different specifications are in fault, and can also be fixedly used as the leading end of a short-circuit connection grounding wire. According to the low-voltage multipurpose short-circuit connector, not only are the problems that the rush repairing time is long due to the fact that a switch is not matched, and the power fault range is large solved, but also the problem that the leading end of the overhauling grounding wire of most switches cannot be installed is solved, and the operation efficiency and power supply reliability are improved.