39results about How to "Avoid stress failure" patented technology

The invention relates to a building with triangular solar photovoltaic conversion structures, which comprises a solar controller, a storage battery, an inverter, solar panels, transparent building glass, triangular supporting structures and heat insulating materials, wherein the back surfaces of the triangular supporting structures are connected onto a building elevation structure, the solar panels for photovoltaic conversion are installed on the inclined surfaces of the triangular supporting structures, light reflecting plates, arc-shaped light condensing plates, decoration plates or decoration glass plates are installed on the other surfaces of the triangular supporting structures, and the right-angle outward extension surfaces of the triangular supporting structures are the transparent building glass or transparent building doors/windows.

The invention provides a chassis equipment cabin baseplate for a high-speed rail vehicle. The chassis equipment cabin baseplate comprises an outer skin, an inner skin, a middle foam interlayer and a hook, wherein both the outer skin and the inner skin are made of carbon fiber twill fabric and carbon fiber unidirectional fabric and adopt the vacuum injection formation technology; the middle foam interlayer is made of PVC interlayer foam and adopts the vacuum injection formation technology; the PVC interlayer foam comprises a foam body part and an edge part on the edge of the foam body part; the hook is arranged at the common end parts of the outer skin, the inner skin and the middle foam interlayer. The production method of the chassis equipment cabin baseplate is easy to operate, and short in production time; as the outer skin and the inner skin, which are made of carbon fiber composite materials, as well as the middle foam interlayer adopt the vacuum injection formation technology, the chassis equipment cabin baseplate has the advantages that the surface is smooth and flat, the assembly parts are less, the assembly cost as well as the assembly time is greatly reduced, and routine maintenance is easy.

The invention belongs to the technical field of solar thermal utilization, and particularly discloses a groove type condensation solar heat collecting tube with a compensation sealing structure. The groove type condensation solar heat collecting tube is provided with a coated stainless steel tube, a coated borosilicate glass tube is sleeved on the outside of the coated stainless steel tube, stainless steel seal heads are sleeved at both ends of the coated stainless steel tube, and the outer wall of the coated stainless steel tube is hermetically connected with the stainless steel seal heads; the coated borosilicate glass tube is slidably connected with the stainless steel seal heads; high-temperature-resistant silicon rubber compensation sleeves are sleeved on the stainless steel seal heads, and two ends of each high-temperature-resistant silicon rubber compensation sleeve are respectively hermetically connected with the coated borosilicate glass tube and the corresponding stainless steel seal head; and heat-insulation vacuum chambers are disposed among the coated stainless steel tube, the coated borosilicate glass tube and the stainless steel seal heads. The heat collecting tube is provided with the high-temperature-resistant silicon rubber compensation sleeves with cheap prices, stress destruction can be avoided, components of the heat collecting tube are welded and hermetically sealed, and accordingly the groove type condensation solar heat collecting tube is high in reliability and structural tension resistance and fine in heat-insulation performance. In addition, welding operation is seldom carried out in assembling process, yield of finished products is high, the process is simple, and labor cost is low.

The invention discloses a propeller power meter for a cavitation tunnel and relates to the field of a propeller hydrodynamic measuring device. A transmission system of the power meter is fixed on a cylinder body by a single-arm support frame and a double-arm support frame. An input shaft is in a thrust bearing set and is connected to the transmission system through a coupling. The thrust bearing set is connected to an opening cylinder section which is threadingly connected to a shaft sleeve of the transmission system. Two ends of a thrust torque sensor are connected to the input shaft and a paddle shaft, a signal input line of the thrust torque sensor passes through a hollow portion of the input shaft, is transferred through a slip ring, then goes out of the sealing ring and is connected to a signal output line in a watertight junction box. An end of the paddle shaft is supported by a water-lubricated bearing in a sealing sleeve. A contraction section is connected to a thrust bearing set and an end sealing sleeve through threads. The space where the thrust torque sensor is located is watertight and communicates with the atmosphere. The effects of small interference to a flow fieldand convenient disassembly and assembly of the paddle shaft are achieved.

An embedded coupling between the pushing ship driven by engine and the barge features that the main recess on the central axis of barge has two embedding recesses, said pushing ship has three convex parts respectively positioned on its central axis and both sides, said convex part is pivoted with the push rod of hydraulic power unit, and the cylinder of said hydraulic power unit is fixed to said pushing ship.

The use of type V phosphodiesterase inhibitors as a novel independent therapeutic modality in the treatment of exercise induced pulmonary hemorrhage in equine is described. The type V phosphodiesterase inhibitor is injected into the horse intravenously as a stand-alone agent from about one-half hour to about seven (7) days prior to the onset of strenuous exercise.

The invention relates to a sound barrier panel device for disorganizing the high speed train running wind energy. The whole structure is formed by a sheet steel in a stress arc shape, a sheet steel in a disorganized small arc shape and a sheet steel in a stream guidance arc shape. High speed train running wind acts on a whole concave face, the concave face is formed by continuous convex-concave arc surfaces with different curvature radii, the acting force of the running wind can be disorganized to the greatest degree, then diffracted rays at the top of a sound barrier are made to be of a sheet steel arc structure, suddenly-changed propagating geometric routes of the running wind are avoided, meanwhile, vibration of the diffraction sheet steel arc structure and an air layer at the back is caused by the running wind, and energy of the running wind and energy of noise are further disorganized.

The invention provides a steel jacket steel bent pipe dewatering structure for connecting direct burial and overhead steam pipes. The structure comprises a diameter expansion stand pipe part, a diameter expansion dewatering part, a dewatering long bent pipe and a reducing pipe, wherein a stand pipe of an L-shaped diameter expansion outer protecting pipe and a long arm bent pipe arranged in the stand pipe form a steel jacket steel structure; a rainproof cap is arranged in the connected position of the ground of the long arm bent pipe with an overhead section; a direct burial pipe of the L-shaped diameter expansion outer protecting pipe and a working pipe arranged in the direct burial pipe form a steel jacket steel structure; the diameter expansion stand pipe part and the diameter expansiondewatering part are connected in an equal-diameter manner; the dewatering long bent pipe consists of a large-curvature long arm dewatering pipe and a support limiting ring; and the reducing pipe is used for connecting the diameter expansion dewatering part with a standard caliber outer protecting pipe. The structure is reasonable in design, reduces the mounting investment, improves the mounting efficiency, maximizes natural compensation effect on a Z-shaped bent pipe, and solves the problems of thermal expansion displacement, low-frequency vibration and the like in a long dewatering pipe.

A one-piece, cast traction pin for use with railway cars. The traction pin is used to connect the railcar cab with the railcar truck assembly. The traction pin includes a mounting plate cast integral with the pin, thereby eliminating the use of multiple welded plates. The one-piece cast traction pin is also solid to reduce the potential for stress related failure of the traction pin during normal operation of the railway car.

The invention discloses a tool framework for engine radiator tanks. The tool framework comprises a fixing bracket. Two first beams, two second beams and two third beams of the fixing bracket are fixed to the two ends respectively, stop bars are fixed between the first beams and the second beams side by side, and movable clamping plates are fixed to the second beams side by side. First supports are fixed to one side of one third beam side by side, second supports are fixed to one side of the other third beam side by side, and the first supports are opposite to the second supports in position. According to the tool framework, one radiator tank is fixed through one pair of fixed supports and one pair of movable clamping blocks, the radiator tanks are stored and transported by fixing several pairs of fixed supports and several pairs of movable clamping blocks to the framework side by side, and stress damage to the structures of the radiator tanks in storage and transport is avoided.

The invention relates to the technical field of automobile fittings, in particular to an improved shock absorber, which comprises an oil storage cylinder, an outer cylinder, a working cylinder, a compression valve, a piston device, a piston rod, a guider, a protecting cover and an oil seal, wherein the piston device comprises a piston with an accommodating cavity, and a connecting shaft is arranged in the accommodating cavity; a first elastic gasket is arranged on an outer sleeve of the connecting shaft; a second elastic gasket is arranged between the first elastic gasket and the compression valve; a spring is arranged between the first elastic gasket and the second elastic gasket; the outer cylinder is connected with a bottom side fixing device; and the oil storage cylinder is externally connected with a middle side fixing device. According to the invention, with the first elastic gasket, the spring and the second elastic gasket between the compression valve and the piston, mutual wear between the piston and the compression valve is avoided, and two ends of the shock absorber is protected from failure caused by compression. Besides, the outer cylinder and the oil storage cylinder are respectively connected with the bottom side fixing device and the middle side fixing device; and when being mounted, the shock absorber can be positioned through the bottom side fixing device and the middle side fixing device, so that the mounting is convenient.

The invention provides an externally-hung connecting device for prefabricated wallboard installation and a prefabricated wallboard installation method. The externally-hung connecting device comprisesan upper connecting assembly and a lower connecting assembly. The upper connecting assembly comprises a first anchor plate, a first threaded connecting rod, a first L-shaped connecting plate fixedly connected with a lower flange of an upper steel frame beam, a first heat insulation base plate and a first fixing nut. The first threaded connecting rod penetrates through the first L-shaped connectingplate and the first heat insulation base plate to be connected with a first fixing nut. The lower connecting assembly comprises a second anchor plate, a second threaded connecting rod, a second L-shaped connecting plate fixedly connected with a floor slab steel bar, a second heat insulation base plate and a second fixing nut. The second threaded connecting rod penetrates through the second L-shaped connecting plate and the second heat insulation base plate to be connected with the second fixing nut. The externally-hung connecting device can safely and reliably achieve fixed installation of aprefabricated wallboard, can achieve rapid installation on the premise that production standardization of the prefabricated wallboard is achieved, reduces the workload of construction site operation,and improves the construction efficiency and the installation quality.