47results about How to "Guaranteed Rigidity Requirements" patented technology

The invention discloses a cylindrical cable net reflection system driven by three telescoping rods, aiming to solve the problems that a reflection system in the prior art is large in intensity and complex in structure. The cylindrical cable net reflection system includes a net surface cable (1), a fastening cable (4), a center column (6), an expandable outer circular ring unit (7), an upper platform (8), the three telescoping rods (10), a lower platform (12), and a support platform (13), a feed source (5) is arranged at the top of the center column, the center column and the outer circular ring are connected through upper and lower support cables (2), an adjusting cable (3) is connected between the net surface cable and the fastening cable to control the deformation of the reflection plane by changing the length, the upper ends of the three telescoping rods are connected with the upper platform through a spherical hinge connection structure (9), the lower end is connected with the lower platform through a revolute pair connection structure (11), and by changing the length of the three telescoping rods, the attitude control of the reflection device is realized. The reflection system is simple in structure, portable and flexible, accurate in attitude control, and can be used for the reflection or convergence of optical and electrical energies.

The invention discloses a conveniently-assembled combined shaft which is characterized in that a transmission shaft and a coupling shaft which are arranged at two ends and an intermediate shaft located between the transmission shaft and the coupling shaft are connected through a shaft end key groove, a subdivision-type shaft sleeve and a bolt respectively to form an whole, and a workpiece is arranged on the intermediate shaft. When a working part on the shaft is disassembled, only the connection bolt of the subdivision-type shaft sleeve needs disassembling, and the middle section of the shaft is taken out from the key groove to conveniently assemble and disassemble the working part on the shaft. The conveniently-assembled combined shaft is simple in structure and convenient and rapid in use when the workpiece on the shaft needs disassembling and assembling frequently, the unnecessary disassembly and assembly of other parts are reduced, the work efficiency is improved, and the service life of a machine is prolonged.

The invention discloses a screen frame lifting device for a printing machine. The screen frame lifting device for the printing machine comprises a machine frame, a lifting transmission device and a screen frame, wherein the lifting transmission device is installed on the machine frame, and the screen frame is installed on the lifting transmission device. The screen frame can be widely applied to large-area self-aligning printing machines, the space of the whole device is greatly reduced, and meanwhile the demands for precision and rigidity of the screen frame in the process of lifting are met.

The invention discloses a light carbon fiber case integral forming manufacturing method. The light carbon fiber case integral forming manufacturing method comprises the following contents of pre-formation of guide rails and wedge-shaped parts; implementation of threaded installation holes, wherein the threaded installation holes are implemented through metal embedded parts, bottom installation holes are pre-machined in the metal embedded parts, and the metal embedded parts are precisely positioned on the forming surface of a case die through the pre-machined bottom installation holes; pre-formation of side face installation beams; case body lay-up; machining; surface metallization on the inner surface and the outer surface of the case body; and surface three-proofing treatment. According to the light carbon fiber case integral forming manufacturing method, reasonable split design is carried out, the guide rails, the wedge-shaped parts and side face connecting beams are pre-formed and then assembled with the case body die, overall case body lay-up and autoclave co-curing formation are carried out, the manufacturing difficulty is lowered, and the overall rigidity requirement of the case body is also ensured; many printed board assemblies need to be installed in the case body, a power supply component needs to be installed outside the case body, installation interfaces are many, the positions are compact, the high-precision requirement for installation positions and dimensions is met through the embedded part precise positioning technology, and the connecting strength is ensured.

The invention is suitable for the technical field of robot walking, and provides a robot foot device with a sole pressure detection function. The device comprises an upper bottom plate, a buffer cushion and a lower bottom plate which are stacked from top to bottom. A plurality of single-dimensional force sensors are arranged on the upper bottom plate. Each single-dimensional force sensor comprisesa buffer part and a detection piece, wherein the buffer part is fixed at the bottom of the detection piece, and the detection piece is electrically connected with an electronic circuit. First throughholes are formed in the positions, corresponding to the single-dimensional force sensors, of the buffer pad; the buffer parts are embedded in the first through holes, and supporting columns extendingupwards are arranged at the positions, corresponding to the buffer parts, of the lower bottom plate. Second through holes are further formed in the buffer pad and internally provided with pressure springs. The robot foot device ensures the rigidity requirement of feet of a robot and also has a buffering function, the sole pressure distribution condition in the operation process of the robot can be accurately detected in real time, and then data bases are provided for autonomous stable walking of the robot.

The invention discloses an unmanned transport ship with the wave compensation function; the unmanned transport ship comprises an upper-layer ship body and lower-layer ship bodies, the multiple lower-layer ship bodies are installed at the bottom of the upper-layer ship body, and =wave compensation systems are installed between the lower-layer ship bodies and the upper-layer ship body; each wave compensation system comprises an active wave compensation system and a passive wave compensation system, the passive wave compensation system is installed below the upper-layer ship body, and the active wave compensation system is installed between the passive wave compensation system and the lower-layer ship body. The active wave compensation systems and the passive wave compensations system are combined to carry out overall wave compensation on the deck platform, different wave compensation systems are applied to different sea conditions, energy consumption can be saved to the maximum extent, shearing force of sea waves to the compensation systems in the sailing process of a ship is reduced through the guide rails. Therefore, the rigidity requirement between the lower-layer ship body and the upper-layer ship body is met.

The invention discloses a frame-corewall energy dissipation and seismic mitigation structure system with multi-pendulum tuning core tubes. The frame-corewall energy dissipation and seismic mitigation structure system comprises a corewall, the multi-pendulum tuning core tubes, a frame beam, a frame column, a combined friction pendulum sliding hinge support, a prestressed steel strand, a controllable hinge frame beam and a local toggle type energy dissipation device. On the basis of a traditional frame-corewall structure, the corewall is changed into a combined form of the corewall and a plurality of multi-pendulum tuning core tubes, a tube body of each multi-pendulum tuning core tube is divided into a plurality of sections, a base of the corewall is fixedly connected, and the base of each multi-pendulum tuning core tube is hinged to each section; the multi-pendulum tuning core tubes add a defensive line for a traditional frame-corewall structure, so that the traditional frame-corewall structure becomes a triple lateral force resistance system, and the frame-corewall energy dissipation and seismic mitigation structure system with the multi-pendulum tuning core tubes can effectively improve the investment-benefit ratio of a building structure. Through the displacement amplification capability, the deformation of a damper is increased, and the damping effect of the structure is improved.

The invention discloses an electronic landmark system for railway train carriage positioning, a plurality of electronic landmarks are arranged at the positions corresponding to carriages, electronic coordinates comprise a control module, a structure display module and a power supply module, and the control module is used for being in butt joint with information transmission of a station platform system and then driving the information to be displayed on the structure display module; the structure display module is used for displaying the related information output by the control module; the power supply module is used for supplying power to the whole electronic landmark system and is connected to each electronic landmark in parallel; according to the technical scheme, dynamic identification is achieved, and train number display information can be synchronously updated in real time; semi-outdoor environment requirements are met, and light prevention, high-temperature and low-temperatureresistance, water prevention, explosion prevention and skid prevention are achieved; the expandability of the display content in the future is met; and convenience is brought to installation implementation and after-sales maintenance.

The invention discloses a design method of a lightweight structure of a palm mattress. The method comprises the following steps: layering a palm mattress to obtain mattress layers, establishing a palmmattress model, applying a human body load to the palm mattress model, carrying out stress deformation analysis, measuring the deflection value of each corresponding mattress layer in the palm mattress model, and setting the density of each mattress layer according to the deflection value change of each mattress layer to obtain the light-weight structure of the palm mattress. By adopting the method disclosed by the invention, the lightweight structural design of the palm material mattress can be guided, the palm material mattress is designed into a layered structure, and the density of the mattress is designed, so that the light weight of the mattress is realized. Through the design, the total density of the palm fiber mattress can be reduced, the use amount of mattress materials is reduced, the production cost is reduced, and the product quality can be guaranteed.

The invention relates to a combined machining tool and a combined machining method for a force bearing support plate. The combined machining tool comprises at least two sets of clamping tools, wherein each set of clamping tool comprises a base, a first stand column, a second stand column, a cross beam, a first shape follow-up clamping block and a second shape follow-up clamping block; the first stand columns and the second stand columns are vertically and oppositely arranged on the bases; the two ends of the cross beams are fixedly arranged at the tops of the first stand columns and the tops of the second stand columns correspondingly; and the first shape follow-up clamping blocks and the second shape follow-up clamping blocks are oppositely arranged on the inner sides of the first stand columns and the inner sides of the second stand columns and used for clamping the two sides of the force bearing supporting plate. According to the combined machining tool and the combined machining method for the force bearing supporting plate provided by the invention, the positioning requirement and the rigidity requirement of the force bearing supporting plate in the machining process can be met, the number of tools is reduced, and the machining efficiency is improved.

The invention relates to a zipper type ground fracture repairing device and a using method. The device comprises a ground fracture; a plurality of cover plates are covered along the length direction of the ground fracture; each cover plate comprises a cuboid first cover plate and a cuboid second cover plate which are the same in size; first buckling parts are arranged at the ends, in the length direction, of the first cover plates, second buckling parts are arranged at the ends, in the length direction, of the second cover plates, the two first cover plates are matched through the first buckling parts to form a main cover plate, the first buckling parts of the first cover plates and the second buckling parts of the second cover plates are matched to form auxiliary cover plates, and the cover plates are further filled with multiple layers of materials. The cover plate can adapt to the ground fracture, so that the cover plate can better adapt to horizontal tension deformation, vertical dislocation deformation and slight twisting deformation of the ground fracture, roadbed engineering on the ground crack is ensured to be safe and stable, and engineering construction safety on the ground crack is ensured.

The invention belongs to the technical field of dome-screen simulation cabins, and particularly relates to a dome-screen simulation cabin structure and a preparation method thereof. The dome-screen simulation cabin structure comprises a belly cabin and a top cabin. The belly cabin comprises a plurality of web plates distributed in a circle, the top cabin comprises a plurality of top plates distributed in a circle, and flanged plates are fixedly installed on the two sides and the top of each web plate and the periphery of each top plate; every two adjacent web plates, every two adjacent top plates and the sides, close to each other, of the top plates and the web plates are connected together through two corresponding flanged plates, and two assembly holes are formed in each flanged plate. The dome-screen simulation cabin structure has the advantages of being attractive, light in weight, good in sealing performance, easy to fix, maintain and replace, low in cost, short in development period, capable of being used for manufacturing various driver simulation cabins and the like; traditional fasteners are replaced with fastening mechanisms, the connection fastening performance can be ensured, and meanwhile, compared with a traditional fastener installation mode, the installation mode of the dome-screen simulation cabin structure is faster and more convenient; repeated utilization can be achieved, and the use cost is reduced.