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360results about How to "Improve load effect" patented technology

Modular hydraulic-drive four-leg robot with variable leg shape structures

The invention discloses a hydraulic-drive four-leg robot. The modular hydraulic-drive four-leg robot has the advantages that the hydraulic-drive four-leg robot is good in dynamic balance and high in topographical adaptability, loading capacity and cost performance, and is in a modular and bionic structural design, four leg shapes can be switched over by means of quickly assembling and disassembling subassemblies, the modular hydraulic-drive four-leg robot is multipurpose, and merits and shortcomings of various leg shapes are verified by experiments at a physical prototype stage; each single leg is provided with two leg sections, has three degrees of freedom and comprises a hip joint and thigh assembly, a knee joint and shank assembly and a side sway assembly; a side sway and connecting block combining form is adopted for each thigh portion according to a bionic principle, so that sufficient rigidity and strength are guaranteed, the hydraulic-drive four-leg robot can bear a load stably while the weight of the robot is reduced to the greatest extent, and sufficient activity space for hydraulic cylinders is guaranteed; shank portions comprise foot-end rubber pads and passive retractable bidirectional spring shock absorption mechanisms, and instant impact force generated when the robot is in contact with the ground can be effectively buffered and absorbed under multiple shock absorption actions; problems of limited service lives of components and vulnerability of electronic elements such as foot-end force sensors due to the fact that impact force disappears and springs are rebounded quickly when an existing robot leaves the ground can be solved by the aid of the bidirectional spring mechanisms.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Process for preparation of alicyclic diepoxy compound, curable epoxy resin compositions, epoxy resin compositions for the encapsulation of electronic components, stabilizers for electrical insulating oils, and casting epoxy resin compositions for electrical insulation

According to the present invention (1), an alicyclic diepoxy compound represented by the following general formula (I):
can be produced in high purity and high yields at low cost, by epoxidizing the corresponding alicyclic diolefin compound with an organic percarboxylic acid. As the alicyclic diepoxy compound lacks an ester group in the molecule, it will show high reactivity for a cationic catalyst. Besides, when it is used as a curable epoxy resin composition of the present invention (2), it will show an effect of lowering its curing temperature or reducing its curing time. The curable epoxy resin composition has high reactivity for various curing agents, low viscosity, and excellent workability. Moreover, the curable resin composition is also superior in that it has less effect to working surroundings, and a cured product thereof shows useful physical properties for the uses in coatings, ink, adhesives, sealants, encapsulants, and the like. Furthermore, as a resin composition of the present invention (3) shows a low coefficient of water absorption, it is of extremely high quality as an epoxy resin composition for the encapsulation of electronic parts. In addition, a stabilizer for an electrical insulating oil of the present invention (4) (i.e., the alicyclic diepoxy compound or an electrical insulating oil containing such a compound) is low in acid value, and the stabilizer improves the properties of the insulating oil. In addition, a cured product obtained by curing a casting epoxy resin composition for electrical insulation of the present invention (5) has excellent properties such as high bending strength, high Tg, and low permittivity.
Owner:DAICEL CHEM IND LTD

Packet-switching network with symmetrical topology and method of routing packets

InactiveUS7012895B1Decrease load capacityDecrease likelihoodError preventionTransmission systemsMesh networkingProgram code
A mesh network for routing a plurality of data segments therethrough, each of the data segments containing address information. The network includes: a first, second, and third switch element each having a respective external input for routing data segments into the network and a respective external output for routing data segments out of the network; a bi-directional coupling between each of the switch elements; and a first controller for interrogating the address information of each of the data segments inbound into the first switch element. The exit pathway for any inbound data segment received by a switch element is selected according to the address information of that data segment, and if a contention exists for the exit pathway, further according to a priority designator of that data segment. The first external output, if free and if the first switch element is the outbound destination for that data segment, will be selected as the exit pathway, otherwise one of said bi-directional couplings in communication with the first switch element will be selected as the exit pathway. Also, an associated method and computer executable program code on a computer readable storage medium for routing a plurality of data segments through a mesh network.
Owner:UNIV OF KENTUCKY RES FOUND

Control system for all-vanadium redox flow energy storage cell stack

InactiveCN102427140ASafety technical issues such as preventing damageGuaranteed uptimeFuel cell auxillariesFlow cellControl signal
The invention provides a control system for an all-vanadium redox flow cell stack. The cell stack comprises a plurality of tandem all-vanadium redox flow monocells; a positive electrolyte storage tank and a negative electrolyte storage tank are provided out of the cell stack and respectively deliver electrolyte into the monocells through a positive electrolyte inlet pipeline and a negative electrolyte inlet pipeline. The control system comprises a master controller unit, sensors, a data acquisition unit, an execution unit and fluid pumps, wherein, the sensors measure real time working parameters of the cell stack during reaction, the data acquisition unit converts the real time working parameters into data signals and sends the data signals into the master controller unit, the master controller unit carries out logical operation on the data signals and outputs control signals to the execution unit, the execution unit drives the fluid pumps to work, and there are two fluid pumps which are respectively arranged on the positive electrolyte inlet pipeline and the negative electrolyte inlet pipeline and respectively control the flow of positive electrolyte and negative electrolyte. The system reliably guarantees that the cell stack operates safely and smoothly and fulfills ideal cell performance.
Owner:DONGFANG TURBINE CO LTD

Steel ball conveyor device

The invention discloses a steel ball conveyor device belonging to the field of conveying machinery. The steel ball conveyor device comprises a conveying box, a main driving roller, a direction-changing driving roller, a group of carrier rollers, a power transmission mechanism and a steel ball carrying mechanism, wherein a wear-resisting plate is arranged in a conveying cavity of the conveying box; the main driving roller is supported on the wall of the conveying box; chain traction chain sprockets are respectively formed at the two ends of the main driving roller; the direction-changing driving roller is supported on the wall of the conveying box; chain direction-changing traction chain sprockets are respectively formed at the two ends of the direction-changing driving roller; the group of carrier rollers are supported in the middle of the conveying box; the power transmission mechanism is arranged on the top of the conveying box; the steel ball carrying mechanism comprises a pair of curtain rail plate traction chains and a group of curtain rail plates; the direction-changing driving roller is supported on a direction-changing driving roller shaft head support bearing seat; the direction-changing driving roller shaft head support bearing seat is arranged a guide rail; the guide rail is arranged on the wall of the conveying box; the wall of the conveying box is provided with an adjusting screw rod seat which is provided with an adjusting screw rod; and the pair of curtain rail plate traction chains are respectively formed by chain links which are connected in a circulating way. The steel ball conveyor device is beneficial to unloading a steel ball, reliable in transmission and matching, good in firmness and long in service life, can guarantee the traction effect for the curtain rail plates, and is simple and convenient to operate, examine and maintain.
Owner:CHANGSHU FEIFAN METALWORK
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