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220results about How to "Small geometry" patented technology

Angular bevel gear mechanism

The invention provides an angular bevel gear mechanism. In the angular bevel gear mechanism, a driving wheel and a driven wheel form a driving pair; axial lines of the driving wheel and the driven wheel are crossed at any angle; the driving wheel is connected with an input shaft; the driven wheel is connected with a rotating shaft of a driven device; the driving is realized under the action of continuous mesh between driving hook levers and driven hook levers; any angle is not equal to 90 degrees; the driving wheel is provided with a plurality of driving hook levers; the driven wheel is provided with a plurality of driven hook levers; the driving hook levers are uniformly distributed on the end surface of a cylinder of the driving wheel; the driven hook levers are uniformly distributed on the circumference of a cylindrical surface of the driven wheel; the driving wheel and the driven wheel form a pair of driving pair; and the driving wheel is driven by a motor to cause the driving hook lever to be meshed with the driven hook levers, so that the driving among any crossed shafts in space can be realized. The invention can greatly simplify the structure of a micro mechanical driving device, reduce the geometric dimensioning and the quality, improve the flexibility for operation, has low construction cost, and is convenient to be applied to the filed of micro electromechanical systems.
Owner:SOUTH CHINA UNIV OF TECH

Hook rod gear mechanism for parallel shaft transmission

InactiveCN104455212AAchieve motion transferSmall space sizeToothed gearingsDrive wheelEngineering
The invention relates to a hook rod gear mechanism for parallel shaft transmission. The hook rod gear mechanism comprises a transmission pair composed of a driving wheel and a driven wheel. The axis of the driving wheel and the axis of the driven wheel are parallel to each other. The driving wheel is connected with an input shaft. The driven wheel is connected with an output shaft. Driving hook rods on the driving wheel are evenly distributed in the circumference of the cylindrical end face of the driving wheel. Driven hook rods on the driven wheel are also evenly distributed in the circumference of the cylindrical end face of the driven wheel. The driving hook rods and the driven hook rods are each in a cylindrical spiral linear shape. When the driving wheel and the driven wheel are installed, the driving hook rod and the driven hook rod in one pair are meshed, the driving wheel is driven by a driver to rotate, the continuous and stable meshing is completed through the meshed hook rods, and transmission between the two parallel shafts is achieved. The spiral linear shapes of the driving hook rods and the driven hook rods can be determined according to the installation spatial coordinate system, the transmission ratio and other parameters of the driving wheel and the driven wheel and according to the hook rod contact line equation. The hook rod gear mechanism is simple in structure, fewer in transmission mechanism part, small in size, light in weight, large in transmission ratio, stable in transmission and suitable for being applied to the fields of mini machines and micro machines.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

Potential type micro electrode sensor capable of being used for ion detection in settlings and application thereof

The invention relates to a potential type micro electrode sensor, in particular to a potential type micro electrode sensor capable of being used for ion detection in settlings and application thereof.The potential type micro electrode sensor is a polymer film ion selective micro electrode, and consists of a gold micro electrode, a PEDOT (PSS) conduction layer and an iron selective polymer film; the iron selective polymer film is prepared by mixing ion selective carriers containing ions to be detected and lipophilic ion exchangers (quadri(3,5-bis(trichloromethyl)phenyl)sodium borate accordingto the mol ratio of (1:2)-(1:4) and then adding polyvinyl chloride and o-nitrophenyl octyl ether. The solid contact type micro electrode has the advantages that the manufacturing is simple and convenient; the sensitivity is high; the cost is low; the miniaturization is easy, and the like. Meanwhile, the micro electrode mass transfer speed is high; the current density is great; the response speed is high, and the like. The ion field in-site analysis in settlings can be realized; the detection on various ions in the settings can be realized through changing the types of ion carriers in the ion selective films.
Owner:YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI

Ultra short span quasi-eight-wood metal-resistant antenna and electronic label using the same

The invention discloses an ultra-short spacing quasi-Yagi anti-metal antenna which comprises a director dipole, a first dielectric plate, an active dipole, a second dielectric plate and a reflector laminated sequentially. The director dipole and the active dipole are metal thin layers, on which a multi-folded vibrator image is etched. The reflector is a metal thin layer. The metal thin layers of the active dipole, the director dipole and the reflector are in parallel to each other. The active dipole and the director dipole are in staggered arrangement and the central axis in the normal direction of the active dipole and the director dipole are not coincident to each other. The interfering energy caused by a metal object is converted into the available component for increasing the read-write distance of an RFID device. Meanwhile, the complex structure, such as EBG, is avoided, and a planar folding structure with convenient manufacture can be realized by adopting the simple printed circuit manner. Moreover, the adopted high-frequency dielectric plate belongs to the domestic products in mass production with low cost. In addition, compared with the conventional quasi-Yagi antenna, the quasi-Yagi anti-metal antenna has the advantages of greatly reduced size and anti-metal performance while maintaining high gain.
Owner:南通云创投资有限公司

Permeability measurement system and method for low-permeability rock ore particles

The invention provides a permeability measurement system and method for low-permeability rock ore particles. The permeability measurement system comprises a high-pressure air source device, a reference cavity, a suction and exhaust valve and two symmetrically-arranged sample side devices; each sample side device comprises a sample cavity, an isolation valve and a balance valve, the sample cavity is communicated with the reference cavity through a circulation pipeline to receive high pressure air transmitted from the reference cavity; the isolation valve is arranged at the position of the circulation pipeline and close to the sample cavity; the balance valve is arranged at the position of the circulation pipeline and close to the reference cavity; the two sample cavities are respectively used for accommodating to-be-detected low-permeability rock ore particles and impermeable solids, the impermeable solids and the to-be-detected low-permeability rock ore particles are identical in particle size and volume, and the sample side devices are arranged at the same height. The permeability measurement system is simple and easy to maintain, small in dimension and high in safety; the permeability measurement system and method has the advantages that credibility and measurement precision of permeability of low-permeability rock ores are remarkably increased.
Owner:苏州开洛泰克科学仪器科技有限公司

Orthopaedic surgery robot based on non-invasive type real-time surgery positioning navigation device

The invention relates to an orthopaedic surgery robot based on a non-invasive type real-time surgery positioning navigation device. The robot is characterized by comprising a surgery bed, a fixing device, an executing mechanism, a mechanical arm and a mechanical hand, the fixing device is arranged on the surgery bed in a sliding mode, the executing mechanism is arranged above the fixing device, the mechanical arm is arranged on one side of the executing mechanism, and the mechanical hand is clamped in the mechanical arm. The mechanical hand is used for implementing the piercing movement of a steel needle which has the diameter of 2 mm and rotates at a high speed, and the final surgery channel is established. The mechanical hand comprises a steel needle clamping mechanism, a high-speed rotating mechanism and an axial movement mechanism, wherein the core working principle of the steel needle clamping mechanism is the centrifugal principle. When the high-speed rotating mechanism drives a main shaft to rotate at a high speed, a centrifugal clamping device of the steel needle clamping mechanism starts to work, that is, the steel needle clamping mechanism clamps the steel needle, and the movement of putting down the steel needle in a segmented mode can be achieved. Due to the working mode, the mechanical hand can have the dual advantages that the geometrical size of the mechanical hand is reduced and meanwhile no working stroke loss exists.
Owner:HANGZHOU SANTAN MEDICAL TECH

Amide phosphonic acid metal complex, corresponding composite material and preparation methods thereof

The invention discloses amide phosphonic acid metal complex, a corresponding composite material and preparation methods thereof. The structure of the complex is as shown in the formula (A), wherein R is H, CH3, C6H5 or CH2=CH-; M is Cu, Co, Ni, Ba or Sr. The amide phosphonic acid metal complex (A) is prepared by using a corresponding amide compound and formaldehyde (or metaformaldehyde) as raw materials, carrying out reaction between the raw materials and H3PO3, and conducting complexing on the reaction product and corresponding metal ions M. The amide phosphonic acid metal complex (A), a high-frequency medium ceramic additive, thermoplastic resin and the like are mixed; pelletization, injection moulding and forming are conducted on the mixture; after high-energy particle irradiation, a metalized rough surface is formed, so as to conveniently realize circuit wiring, and precipitate metal through chemical plating to further obtain a firmly combined fine three-dimensional molding interconnection device or a three-dimensional circuit (3D-MID). Therefore, various antennae of different uses can be integrated to greatly reduce the geometric dimensioning the antennae or an electronic device, ensure the electronic product to be smaller, lighter, thinner and more flexible, greatly simplify the production process, and obviously reduce the cost.
Owner:SICHUAN NORMAL UNIVERSITY +1

Method for machining steam turbine honeycomb seal with electric sparks

The invention relates to a method for machining a steam (gas) turbine honeycomb seal with electric sparks. The method comprises the following steps of: manufacturing a tool electrode of which the contour line of the working surface is consistent with the section line of the inner arc surface of a honeycomb band of a honeycomb seal; laying the honeycomb seal on side on a work bench of an electrical discharge machine, aligning, centering and fixing; installing the tool electrode on a main shaft of the electrical discharge machine with the working surface of the tool electrode corresponding to the inner arc surface of the honeycomb band, adjusting the discharging gap, starting the machine to feed the tool electrode along the circumferential direction of the inner arc surface of the honeycomb band, carrying out electro-erosion machining on the inner arc surface of the honeycomb band, and removing chips by radial reciprocating movement when the tool electrode is fed along the circumferential direction. The method for machining a steam turbine honeycomb seal has high accuracy and can enable the contour of the machined working surface of the honeycomb band to be circularly machined. After the seal is assembled into a circle, the steam leakage gap is machined at one time, thereby realizing high efficiency. Besides, the tool electrode has the advantages of small geometric size, little material, simple structure, easy machining and low cost.
Owner:DONGFANG TURBINE CO LTD

Sea depth high pressure sea water sampler independent buoyancy control equipment

InactiveCN106428487AReduced maximum positive buoyancyLow powerUnderwater vesselsUnderwater equipmentSeawaterDistance detection
The invention relates to sea depth high pressure sea water sampler independent buoyancy control equipment. The equipment mainly includes an outside support, a pressure resistance shell, a pressure resistance shell end cap, an outside oil pocket, a pressure sensor, a underwater distance detection apparatus and a buoyancy control bottle, the buoyancy control bottle is installed outside the outside support, the pressure resistance shell is installed in the cavity of the outside support, the pressure resistance shell is of a thin wall cylinder structure, the two ends of the pressure resistance shell is fixedly connected with the pressure resistance shell end cap, a hydraulic pressure cylinder is installed on the pressure resistance shell, the middle of the outside oil pocket and the hydraulic pressure cylinder is connected through a screw thread, a brushless motor inside the pressure resistance shell is connected with a piston inside the liquid pressure cylinder through a decelerator and a wire rod screw nut; the outside support is also installed with the pressure sensor and the underwater distance detection apparatus. The equipment can carry the sea depth high pressure sea water sampler, adjusts the buoyancy degree of the sea depth high pressure sea water sampler under the water, and achieves an independent unmanned control of the diving depth of the sea depth high pressure sea water sampler.
Owner:ZHEJIANG UNIV
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