44results about How to "Reduce installation stress" patented technology

The invention relates to an attached support structure which consists of a guide seat and an attached support. An outer cylinder of the attached support is movably sheathed on an inner cylinder; a regulating nut is fixedly arranged in the inner cylinder, a regulating screw rod is arranged in the outer cylinder, the regulating screw rod is connected with the regulating nut through a thread, and a driving mechanism for leading the regulating screw rod to rotate is arranged on the regulating screw rod. The guide seat comprises a guide seat body, a lifting pull rod and a one-way pawl mechanism. The one-way pawl mechanism comprises an anti-fall block, a sliding cylinder and a reset tension spring, wherein, the anti-fall block is mounted on the guide seat body through a support pin shaft, a shift fork is arranged on the outer wall of the sliding cylinder, and a sliding pin on the anti-fall block is positioned in a shift fork notch; and one end of the rest tension spring is connected with theguide seat body, the other end is connected on the sliding cylinder by hanging, and the sliding cylinder and the lifting pull rod form the sliding pair connection. On the one hand, the attached support structure realizes the stepless regulation of the connection distance between a frame body and the surface of an outer wall of a building, on the other hand, the attached support structure can realize the full-automatic two-way anti-fall of the frame body by utilizing loads during lifting.

The invention provides a band-pass filter which comprises an input end, an output end and a filter circuit connecting the input end with the output end. The filter circuit comprises a main transmission line and a plurality of sections of short circuit transmission lines with the same impedance; and one end of each section of short circuit transmission line is connected in parallel to the main transmission line, and the other end is grounded. Both the main transmission line and the short circuit transmission lines adopt quarter-wavelength lossless transmission lines; and the phase difference of transmitting signals on the main transmission line and on the short circuit transmission lines is a half of pi. In the band-pass filter provided by the invention, a common electronic element is replaced by the short circuit transmission lines, so that the volume of the band-pass filter is reduced; and the quality factor of the short circuit transmission lines is higher than that of the common electronic element, so that the filter performance is improved.

The invention relates to a suspension bridge steel beam erecting method which comprises the following steps that midspan steel beam sections are symmetrically erected section by section from the midspan to the two sides, and the adjacent midspan steel beam sections are hinged between upper-layer bridge floors; when the curvature of the bridge line shape of the erected mid-span area reaches the curvature designed into the bridge line shape, the erected mid-span sections are rigidly connected to form a whole; and closing of the side-span side steel beams and the middle-span steel beams is completed by adjusting the postures of the steel beams which are located on the two sides and connected into a whole. According to the suspension bridge steel beam erection method designed by the invention, the installation stress in the steel beam erection process is reduced, the installation quality of the bridge is improved, meanwhile, the erection of the side span steel beam section and the middle span steel beam section is independent, and the construction efficiency can be improved by reasonably arranging the steel beam erection procedure and optimizing the construction organization in a steel beam factory and on a construction site.

The invention relates to a dynamic bending adjustment device and a dynamic stable micro-focusing system, comprising a compliance mechanism, which is supported on two mounting seats at the bottom thereof, and an adjusting plate extending vertically upward is arranged from the upper surface of the mounting seat; two connecting pieces, which are respectively connected with the free ends of the adjustment plate and extend along the vertical surface away from the mounting seat; two micro-displacement actuators, which are respectively fixed on the two supporting frames and the side walls are respectively in contact with the two connecting pieces; the two mirror holding pieces are respectively fixed on the bottom surfaces of the two mounting bases; the grazing incidence mirrors are respectively clamped at the two ends of the mirror holding pieces and the mounting bases. between. The dynamic bending adjustment device and the dynamic stable micro-focusing system of the present invention apply a tunable bending moment to both ends of the grazing incident reflector by using a compliant mechanism, adjust the curvature radius of the reflector in real time, realize dynamic micro-focusing, and increase the focused spot size and positional stability.

The invention relates to an electric motor coach driving motor suspending system and an installation method thereof. The suspending system comprises a driving motor, an installation support for installing the driving motor on a vehicle body and damping rubber gaskets arranged on the driving motor for installing the driving motor between the installation support of the vehicle body. The housing of the driving motor is made of an aluminum material, the two ends of the lower end of the housing of the driving motor are each provided with an installation boss, and the installation bosses are internally provided with threaded installation portions. The damping rubber gaskets comprise upper installation plates, rubber gaskets and installation studs which are successively arranged. The installation support for installing the driving motor on the vehicle body comprises a suspended installation support, and a left welding support and a right welding support which are arranged at the two ends of the suspended installation support respectively. According to the invention, when the driving motor works, a good damping buffer effect is exhibited, normal supply of power of an electric motor coach is guaranteed, the whole-vehicle weight can be reduced, and realization of whole-vehicle light weight of the electric motor coach is facilitated.

The device has a waveguide (1) parallel to a track and provided with two emissive faces (6a, 6a) respectively pierced with two arrays of slots (8a, 8b) that respectively pass electromagnetic radiations in microwave frequency wavelengths. One emissive face of the waveguide is opposite to the other emissive face. A powering unit provides power to the waveguide, and a reception unit receives microwaves originating from the waveguide.

A sealing structure for case-penetrating pipelines is characterized by comprising a case, a case mounting seat, a floating sleeve, a mounting seat pressure plate, first bolts, a first guide pipe, a deformed connector, a packing ring, a seal ring, a moving connector, a second guide pipe, a pressure plate and second bolts. The case mounting seat is welded or riveted on the case. The mounting seat pressure plate is fixed on the case mounting seat through the first bolts. The floating sleeve is in clearance fit with the case mounting seat and the mounting seat pressure plate. The packing ring is disposed on the deformed connector and is in small clearance fit with the floating sleeve. The second guide pipe and the deformed connector are welded integrally. Space between the moving connector and the deformed connector is sealed by the seal ring. The pressure plate is connected with the deformed connector through the second bolts. The moving connector, the second guide pipe and the pressure plate are integrally welded. The sealing structure for case-penetrating pipelines has the advantages that the sealing structure with diameter of phi10-phi24 is mainly used for case-penetrating pipelines on aero-engines, product performance is improved, fitting and tightness of the case with the pipelines are improved, and mounting stress of the pipelines is lowered.

The invention discloses a water pump cushioning board. The water pump cushioning board comprises a cushioning board body used for installing a water pump on an engine body. The cushioning board body is provided with a water pump installation plate, and a fan installation plate is arranged at the part, on one side of the water pump installation plate, of the cushioning board body. The water pump cushioning board is light in mass, high in strength and good in universality, can be used for installing the water pump and a fan assembly, guarantees the arrangement reasonability of the water pump and the fan assembly and reduces the number of special parts for installing an engine assembly, and installation stress exerted on installation planes of the water pump cushioning board and the engine body is small.

The invention relates to an accessory of a railway vehicle, in particular to a release device of a braking system of a bogie of a railway truck. The braking system is provided with a basic braking device with slide grooves, sliders and bow braking beams. The release device comprises a spring mounting seat and an extension spring assembly, and is technically characterized in that one end of the spring mounting seat is a mounting end, and the other end of the spring mounting seat is a connecting end; and two connecting plates are respectively arranged at two ends of the extension spring assembly, one end of each connecting plate is connected with the spring mounting seat, a spring is mounted at the other end of each connecting plate, and the springs include an outer helical extension spring and an inner helical extension spring which are connected with each other in parallel to form the spring assembly. The release device has the advantages that the release device is simple and reliable in structure and convenient to install; the extension springs are stretched under the action of tension when the truck is braked; when the truck is released, the braking beams not only release braking due to the action of the gravity of the braking beams, but also are driven to move in pre-braking modes under rebounding actions of the extension springs, so that a brake shoe of the truck is separated from a wheel, and the braking beams can actively release braking.

The invention provides an inlet and outlet gas confluence device of eleven-high-pressure-gas-cylinder trailer, belonging to the technical field of a gas cylinder confluence device. The device comprises a main inlet and outlet gas pipeline, NPT1 / 2'' paired screws, a four-way joint, a high pressure six-way, a converged pipeline, eleven communicating pipelines and safety emptying devices which are fixed by three stages of fixing devices; the upper end of the main inlet and outlet gas pipeline is connected with the output port at the lower end of the high pressure six-way; the output ports at left and right ends of the high pressure six-way 26 are connected with the converged pipeline; the converged pipeline is connected with the communicating pipelines 38 through the four-way joint; and the other ends of the communicating pipelines are connected with end plugs through the NPT1 / 2'' paired screws and the safety empting devices 2. According to the device provided by the invention, the device is optimally designed by adopting the reasonable confluence device and is fixed by the three stages of fixing devices, thus, the gas leakage problems caused by the fact that the assembly is hard, the confluence device is fixed insufficiently, and the connecting pieces are loose due to the low shockproof capability of the structure of the confluence device and concentrated assembly stress are solved; the inlet and outlet gas confluence device integrates the upper, middle and lower three grouped eleven high pressure gas cylinders, and is a high integration of inlet and outlet gas confluence structure; and moreover, the device is reasonable in design, convenient in assembly and disassembly, and is convenient for operation and later period maintenance.

A sleeve-tooth-shaped floating sealing structure penetrating a casing is characterized by comprising the casing, casing mounts, transfer pipe sleeves, bolts, an external cone connector, a guide pipe, a ball joint housing, a ball joint, a captive nut, a flat nozzle and a guide pipe. The external cone connector and the guide pipe are integrated to be a guide pipe assembly inside the casing; the captive nut, the flat nozzle and the guide pipe are integrated by welding to be a guide pipe assembly outside the casing; the casing mounts are connected on the casing by welding or riveting; the transfer pipe sleeves are fixed on the casing mounts through bolts ,and closed up through the ball joint housing to be integrated with the ball joint; the ball joint housing can freely rotate corresponding to the ball joint in all directions within an allowed spacial range; and the ball joint is welded on the guide pipe. The sleeve-tooth-shaped floating sealing structure penetrating the casing has the advantages that the sealing structure is mainly designed for pipelines penetrating the casing on aero-engines, and the sealing structure with diameter of phi 6-phi 12 improves product performance, improves assemblability and tightness of the casing and the pipelines, and reduces assembly stress of the pipelines.

The invention relates to a high-energy-density bag cadmium-nickel alkali accumulator with a new compound negative and positive electrode, which is made up of a positive electrode board, a negative electrode board, an isolating material, a battery capacitance and auxiliary parts, and electrolyte. The character is: the positive electrode is a bag type positive electrode board; the negative electrode board is a pulling dried negative board. The invention can maintain the merits of traditional bag cadmium-nickel alkali accumulator, and it can upgrades the energy-density of the accumulator, and it won't increase the manufacturing cost of the accumulator; the accumulator made up with the invention with the same volume, capacity and magnification, the liquid maintaining period of the accumulator is fives times to the traditional accumulator.

The invention provides a silicon micro electrostatically suspended accelerometer, and relates to an MEMS micro inertia component and an instrument. The silicon micro electrostatically suspended accelerometer comprises a measurement and control system, a metal base and a gauge outfit, wherein the measurement and control system comprises four layers of circuits vertically stacked, the four layers of the circuits sequentially comprise a digital control board, an analog-digital and digital-analog interface board, a main detection board and a front detection board, the gauge outfit is welded to the front detection board, the metal base is provided with an installation hole and an installation boss, the digital control board, the analog-digital and digital-analog interface board and the main detection board are sequentially connected and fixed to the installation hole of the metal base, and the front detection board is fixed to the installation boss of the metal base. The silicon micro electrostatically suspended accelerometer is high in resolution ratio, stability of installation errors is good, and the silicon micro electrostatically suspended accelerometer has a local temperature control function and is compact in structure.