312 results about "Split ring" patented technology

The invention belongs to the technical field of electromagnetic wave functional materials, and particularly relates to a nested split ring wave-absorbing metamaterial and a preparation method thereof. The wave-absorbing metamaterial sequentially comprises an FSS metal structure layer, a dielectric layer and a metal matrix layer from top to bottom in the thickness direction, the FSS metal structure layer is formed by distributing structure units in a periodic array mode, each structure unit is composed of a double-opening outer ring shaped like a Chinese character'hui 'and a double-opening inner ring, the double-opening outer ring is a split square, and the double-opening inner ring is a hollow square. The structural units are symmetrically arranged about the diagonal line of the dielectric layer. The FSS metal structure layer designed by the invention has anisotropy, so that the polarization direction of an incident wave can be rotated by 90 degrees in a reflection mode. By means of the design, the two functions of electromagnetic wave absorption and polarization conversion are achieved at the same time, and meanwhile the effect of multiband wave absorption is achieved. Within the frequency band of 4 GHz to 18 GHz, the maximum wave-absorbing strength of the nested wave-absorbing metamaterial is as high as-30 dB, and the effective wave-absorbing bandwidth can reach 7.5 GHz.

A barbell includes a bar having opposed end portions, each having an annular slot extending around the end portion, and a pair of sleeve assemblies connected to the end portions. Each sleeve assembly includes a sleeve having an axial bore receiving one of the end portions of the bar and a connection assembly including a split ring having two semi-annular pieces received within the slot, a proximal washer positioned axially inward from the split ring and engaging an inward side of the split ring, a distal washer positioned outward from the split ring, the distal washer engaging an outward side of the split ring, an annular member around the split ring, radially retaining the semi-annular pieces within the slot, and a retaining member engaging the distal washer and the bore to retain the connection assembly in connection with the bar and the sleeve.

The invention discloses a non-magnetic passive space nonreciprocal antenna housing based on an artificial electromagnetic metamaterial, and relates to the technical field of stealth materials, the non-magnetic passive space nonreciprocal antenna housing comprises antenna housing units which are periodically spliced in a plane, and each antenna housing unit comprises two dielectric substrates which are vertically crossed with each other; artificial microstructure units are arranged on the upper surface and the lower surface of the dielectric substrate; wherein the artificial microstructure unit arranged on the upper surface of the dielectric substrate comprises a double-opening SRR ring, the artificial microstructure unit arranged on the lower surface of the dielectric substrate comprises an asymmetric square opening ring, and the centers of the double-opening SRR ring and the asymmetric square opening ring are asymmetric. The technical problems that in the prior art, a non-reciprocal super-electromagnetic surface needs external magnetic bias or an external power source, preparation is complex, and integration is difficult are solved.

The invention provides a magnetic resonance self-decoupling coil based on a double-split-ring reverse coupling mechanism, which comprises a dielectric substrate, an external annular metal wire and an internal annular metal wire, the external annular metal wire and the internal annular metal wire are fixed on the dielectric substrate and sleeved together, one end of the external annular metal wire is provided with an opening, and the opening is connected with an outer ring tuning capacitor. Two sides of the outer ring tuning capacitor are respectively provided with a matching metal wire, each matching metal wire is provided with an opening, the opening is connected with a matching capacitor, and the tail ends of the two matching metal wires are connected with an excitation port; the inner annular metal wire 3 is provided with an opening on the opposite side of the opening end of the outer annular metal wire, and the opening is connected with an inner ring tuning capacitor. According to the invention, mutual inductance between magnetic resonance self-decoupling coil units can be effectively reduced, and coupling between multi-channel coil units is reduced.

The utility model relates to a novel stainless steel pipe connecting structure, and aims to solve the problems of complicated installation, insufficient sealing performance, high cost and the like in the conventional connecting mode. The structure comprises an open annular shell, and two ends of the open annular shell are folded inwards to form a groove-shaped structure; one end of each extension plate is perpendicular to the side wall of the shell, and the other end of each extension plate is bent and attached to form an enclosed cavity and is provided with a mounting groove; the arc-shaped gasket is located in the cavity, two ends abut against the extension plates, and mounting holes are formed; the C-shaped lining plate is attached to the inner wall of the groove-shaped structure of the shell and is internally provided with a One side of the annular clamping strip is in contact with the inner wall, and the other side of the annular clamping strip is of a tooth-shaped structure to form a guide inclined surface; and the screw rod penetrates through the mounting hole and is connected with the nut to realize stainless steel pipe connection. The structure simplifies installation, improves sealing performance, reduces cost and is suitable for various stainless steel pipe connection scenes.

The invention relates to a high-sensitivity differential microfluid sensor based on a microstrip line, which is used for measuring the concentration of a water-ethanol mixed solution, and comprises the microstrip line configured with a symmetrical shunt / combiner, a pair of split ring resonators with bent grooves, and a microfluid channel, a dielectric layer and a metal ground which are arranged at the tops of the split ring resonators from the top layer to the bottom layer. Wherein the bent groove parts of the two SRRs are areas with the maximum electric field intensity, and a micro-fluidic channel made of polydimethylsiloxane (PDMS) is placed in the areas. A sensor parameter curve is measured by a vector network analyzer (VNA). The suggested size of the sensor is 30 * 20 mm < 2 >, and the working frequency is 4.8 GHz. Experimental results show that the resonant frequency of the water-ethanol mixture with the concentration range of 0-100% has linear shift of 1250 MHz, and the average sensitivity Savf of detection is 0.987%. The sensor has the characteristics of compactness, high sensitivity, high measurement precision, no environmental interference and the like, and has wide application prospects in the fields of biomedical detection, material analysis, environmental monitoring and the like.

A split ring seal has: a first circumferential end and a second circumferential end; an inner diameter surface and an outer diameter surface; a first axial end face and a second axial end face. The outer diameter surface has a sealing surface. The first axial end face has: a first section; a second section outboard of the first section; and an axial protrusion between the first section and the second section The second axial end face has: a first sealing surface; a second sealing surface radially outboard of the first sealing surface; a circumferential channel between the first surface and the second sealing surface; and a plurality of channels extending radially outward from the circumferential channel.

A connector mating structure includes a packing is attached to a female housing of a female connector. The packing includes an annular section and a locked section, the annular section being attached to an outer peripheral surface of a body section and a forward side of a collar, wherein the locked section is connected to the annular section and locked to an opening of the collar. The annular section provides seal between the outer peripheral surface of the body section and an inner peripheral surface of a tubular section of a male housing. The locked section includes an inserted portion and a protrusion, the inserted portion extending backward from a backward end of the annular section and being inserted into the opening, wherein the protrusion protrudes inward into the annular section from a backward end of the inserted portion and is positioned on a backward side of the collar.

A reinforcing steel bar circumferential conveying system of a tunnel secondary lining reinforcing steel bar binding trolley comprises a circumferential rail which is rotationally arranged in a reinforcing steel bar racking area of the tunnel secondary lining reinforcing steel bar binding trolley through a rotating mechanism, at least one bottom end of the circumferential rail is a feeding end, and a guide limiting mechanism is arranged at the bottom end of the circumferential rail; the steel bar combing mechanisms are arranged on the inner side of the annular rail at intervals; the steel bar combing mechanism is provided with a combing head which stretches out and draws back in the radial direction of the annular rail, and a combing groove is formed in the front end of the combing head; an opening for the carding head to extend out is formed in the annular track; and the annular traction trolley runs along the peripheral surface of the annular rail, is provided with a clamping groove for accommodating and fixing the reinforcing steel bars and is used for dragging and conveying a plurality of reinforcing steel bars at one time. The circumferential steel bar racking device can realize mechanical racking of circumferential steel bars, and solves the problems of low efficiency and high labor intensity of the circumferential steel bar racking.

The present invention discloses a highly conductive split ring of an omnidirectional elastic member. The highly conductive split ring of an omnidirectional elastic member according to the present invention solves the problem of corrosion of peripheral components caused by axial current in high-speed electric motors, which directly affects the operating stability of bearings mounted on the main shaft, thereby affecting the stability of the electric motor under conditions of high rotational speed, high power, and high torque. It also overcomes the state-of-the-art technical challenge of limiting the output of the electric motor, which belongs to the problem of axial current that needs to be resolved quickly, otherwise it may cause a potential safety hazard. The multiple fan-shaped lip edges used in the present invention not only ensure good electrical contact and sufficient contact area with the main shaft, but also move synchronously with the radial or axial movement of the main shaft, demonstrating excellent performance in following the main shaft operation and ensuring good instantaneous electrical contact between the conductive silicone adhesive and the main shaft. [Solution] The split ring comprises an outer frame, a support ring, and a conductive assembly, and the conductive assembly includes a conductive ring, multiple lip edges, a conductive silicone adhesive after it has solidified from a liquid state, and a conductive elastic member that is integrally attached to the conductive silicone adhesive.

The utility model discloses an elastic wine bottle protective sleeve which comprises a protective sleeve body, a sponge lining is fixedly sleeved inside the side wall of the protective sleeve body, a plurality of annular openings are arranged on the sponge lining, and elastic split rings are sleeved in the annular openings. An elastic supporting ring is fixedly embedded in the bottom surface of the interior of the protective sleeve body and the sponge lining, an elastic ring seat is fixedly embedded in the bottom surface of the outer side of the protective sleeve body and the sponge lining, and the top surface of the elastic ring seat is fixedly connected with the bottom surface of the elastic supporting ring; buffering force is provided through the sponge lining, and the wine bottle is wrapped by the elastic split rings, so that when the wine bottle is collided, the impact force can be better buffered through the elastic split rings with elasticity, the wine bottle is protected, and the protection effect is better.

The utility model discloses a high wear-resistant bearing check ring which comprises a split ring, one end of the split ring is provided with a mounting plate, the other end of the split ring is rotatably provided with a clamping plate, the mounting plate is provided with a locking column, the clamping plate is uniformly provided with a plurality of clamping grooves, and the locking column can be clamped in the clamping grooves.

The utility model discloses a copper wire cleaning mechanism of a steel pail automatic welding machine, relates to the technical field of steel pail automatic welding machines, and aims to solve the technical problem that a current copper wire cleaning mechanism is poor in copper wire cleaning effect, and the copper wire cleaning mechanism comprises an equipment shell and a connecting plate. Through the designed cleaning assembly, when a copper wire passes through two groups of rollers, the copper wire can penetrate through an opening cleaning ring on a mounting plate, so that in the copper wire conduction process, two groups of driving roller shafts can be driven to rotate through a driving structure, and then the two groups of driving roller shafts can drive an opening ring to rotate; at the moment, the opening cleaning ring on the opening ring rotates synchronously, then the opening cleaning ring can complete rotating cleaning of the copper wire, the cleaning effect on the copper wire can be effectively guaranteed, and the situation that part of the position of the copper wire cannot be cleaned is avoided.

A pressure measuring cell for measuring pressure, having: - a pressure measuring cell (500); - a rotationally symmetrical sensor cannula (400), into which the pressure measuring cell (500) is inserted; - a rotationally symmetrical process connection (300), wherein one end (370) of the process connection (300) has an inwardly extending, encircling stop surface (310) intended for the sensor cannula, and the other end (380) of the process connection (300) has an opening (330) for receiving the sensor cannula; - a ring-like process seal (600), which continues in an annular, radial ring and exerts a sealing action in a sealing plane between the sensor cannula (400) and the stop surface (310) of the process connection (300), in order thus to prevent process medium from entering into the pressure measuring cell (100); - wherein the stop surface (310) of the process connection (300) and / or a counter stop surface (432) of the sensor cannula (400), which in the installed state is oriented towards the stop surface, have a plurality of individually formed web plates (435), which are configured in a manner dependent on the characteristics of the process seal such that the process seal cannot be pressed into the opening.

The present application relates to a kind of sealing gasket structure, including ring groove, split ring, sealing ring and sealing ring pressure ring;The thickness of split ring is less than the width of ring groove, split ring is installed at the groove bottom of ring groove, and is made of multiple sections, and split ring is abutted on the groove wall of ring groove.There is limiting portion for limiting split ring to move outward on the groove wall abutting with split ring;Sealing ring is abutted on the groove wall with limiting portion, the bottom of sealing ring is abutted on split ring, and the top is overflowed from the slot opening of ring groove;The two sides of the bottom of sealing ring pressure ring are respectively abutted on split ring and the groove wall away from limiting portion, and the middle part of sealing ring pressure ring is pressed on sealing ring and split ring.In addition, a special gate valve for Yellow River water is also provided.The above-mentioned sealing gasket structure and special gate valve for Yellow River water, split ring and sealing ring pressure ring are fixed, so that sealing ring can be firmly installed in valve seat ring groove, and is clamped and fixed by limiting portion located on the side wall of ring groove, to realize the quick and convenient disassembly of sealing gasket structure, and low use cost.

A concentric slave cylinder 3 is proposed, comprising an annular housing 5 which has a pressure chamber 7 rotating around a main axis 100, wherein the annular housing 5 has an axial fluid connection opening 22 fluidically connected to the pressure chamber 7, an annular piston 6 which is axially movably received in the annular housing 5 and limits the pressure chamber 7 in an axial direction 101 with respect to the main axis 100, an outer and an inner piston seal 11, 12 for sealing the pressure chamber 7, wherein the annular piston 6 has an outer sealing receptacle 13 on its outer circumference for receiving the outer piston seal 11 and an inner sealing receptacle 14 on its inner circumference for receiving the inner piston seal 12, and a sealing device 21 for sealing the annular housing 5 against a housing section 2.wherein the sealing device 21 for sealing the fluid connection opening 22 is supported against an environment in the axial direction 101 on an end face of the ring housing 5 and in at least one radial direction 103, 104 on at least one support section 24, 25 of the ring housing 9.

The invention provides a machining die capable of preventing a bent edge from being turned outwards. The machining die comprises a forming bottom die, a movable clamping block, a limiting stop block, a forming rotating wheel, a forming top die and a forming pressing block. When the fillet brace is machined, one side edge of a plate is clamped into the long-strip restraining opening and the annular restraining groove, the other side edge of the plate is attached to the movable clamping block and the forming rotating wheel, and one end of the plate abuts against the limiting stop block. Hydraulic equipment is started to drive a forming top die to move downwards, a forming pressing block is driven to press downwards synchronously, the plate is pressed through an arc-shaped pressing face, and a forming rotating wheel is pushed to move; and when the forming pressing block moves to the lowest position, the plate is formed, and one side edge of the formed plate is pressed into the avoiding opening. According to the machining die capable of preventing the bent edge from being turned outwards, the edge of a plate is cooperatively restrained and fixed through the long-strip restraining opening, the annular restraining groove and the receding opening, the phenomenon that the edge of the plate is turned outwards in the machining process is effectively avoided, and therefore the product percent of pass and the production quality are improved, and material waste caused by forming defects is reduced.

This invention relates to the field of desulfurization and dearomatization system technology, and proposes a deep desulfurization and dearomatization system and method for diesel fractions. It employs multiple relatively independent spaces to form diesel fractions and perform desulfurization and dearomatization operations. During operation, each part is independent yet continuous, enabling better comprehensive and continuous operation of diesel fractions and desulfurization and dearomatization. It is more flexible and practical. The system includes a main body and a space-forming system. The main body includes an annular heating furnace with an open ring fixedly connected inside. The bottom end of the open ring is connected to a feed quick-connect pipe and a discharge quick-connect pipe. The space-forming system includes a mounting synchronization ring and a servo motor. The annular heating furnace has an annular opening, and the mounting synchronization ring is rotatably connected within the annular opening. The servo motor is mounted on the annular heating furnace and is used to adjust the rotation of the mounting synchronization ring relative to the annular opening. Multiple fixed partition plates are fixedly connected to the bottom end of the mounting synchronization ring.

The invention discloses a split type insulating shaft motor and an assembling method thereof. The motor comprises a stator assembly, a rotor assembly and a motor shaft assembly, and is characterized in that the motor shaft assembly adopts a split type design and is composed of an inner shaft section connected with a rotor and a separable outer shaft section, the inner shaft section and the outer shaft section transmit torque through spline matching, and axial limiting is achieved through a split ring and a belleville spring mechanism. And high-performance epoxy-phenolic aldehyde insulating sleeves are nested at the two ends of the inner shaft section, so that electric corrosion of the bearing is effectively prevented. By means of the design, the outer shaft section can be placed in the lateral space of the motor during packaging, and the packaging size is greatly reduced. And a special supporting seat and a pressing sleeve are adopted during assembly, so that the bearing and threads are prevented from being damaged during press fitting. The motor has the dual advantages of reducing the packaging and transportation cost and improving the reliability of the motor.

The invention provides a main pump dynamic pressure shaft seal test bench, which comprises a motor arranged on the top, a support, a cavity, a main pump rotating shaft and a shaft sleeve, the shaft sleeve is sequentially provided with a first-stage seal, a second-stage seal and a third-stage seal from bottom to top, and the first-stage seal is located on the inner side of the cavity; a groove is formed in a main pump rotating shaft, a sectioning ring is arranged on the main pump rotating shaft, a shaft sleeve is limited, the sectioning ring is divided into two symmetrical halves and clamped into a clamping groove (12), each stage of sealing comprises a rotating ring and a static ring, the rotating ring and the static ring are arranged in an adjacent mode, and a friction pair is formed between the adjacent end faces of the rotating ring and the static ring to serve as a sealing face. A spring seat is arranged on the shaft sleeve of the rotating ring of each stage of seal, a spring is arranged in the spring seat, and a belleville spring is arranged at the front end, close to the medium side, of the shaft sleeve and used for supplementing axial accumulated machining errors of the shaft sleeve. The device has extremely high reliability, stable leakage rate can be ensured during operation, and long-term reliable operation can be realized.

The utility model relates to the technical field of butterfly valves, in particular to a multiple blow-out prevention valve rod structure of a three-eccentric center butterfly valve. Comprising a valve body, a butterfly plate, a valve rod, a pin shaft, a bearing and a gearbox, the valve rod penetrates through the valve body, the bearing is arranged between the valve rod and the valve body, the butterfly plate is arranged in the valve body and connected with the middle of the valve rod through the pin shaft, and the upper end of the valve rod is connected with the gearbox; the double-end-face ball valve further comprises a pressing ring, a valve seat sealing ring, an end cover, a bolt, a bearing, padding, a thrust backing ring, a pressing sleeve, a check ring, a pressing plate, an upper shaft split ring, a lower shaft split ring, a stud and a nut. According to the three-eccentric center butterfly valve, the working principle of the three-eccentric center butterfly valve is utilized, multiple anti-blow-out structures are designed, friction between the valve plate and the sealing ring is reduced, the sealing effect is improved, it is ensured that the valve is tightly attached when closed, zero leakage is achieved, a guarantee is provided for basic blow-out prevention through lower shaft blow-out prevention, and safety guarantee can still be provided when the portion above the middle section of the valve rod is overloaded and forged to be cracked and the portion above the upper shaft blow-out prevention is achieved; and the valve rod is ensured not to blow out under various working conditions.

The present invention provides a reduction drive that can prevent case deformation. An annular first case 11 has a first surface 11a, a second surface 11b, a first lateral surface 11c, and a first opening 11d. An annular second case 12 has a second opening that shares an axis passing through the center of the first opening. An annular internal gear 13 is secured to the second case and has internal teeth 13a. A flexible tubular external gear 14 is disposed on the inner side of the internal gear, is secured to the first case at one end in the axial direction, and has external teeth 14a of which a portion is meshed with the internal gear. An elliptical wave generator 19 is disposed on the inner side of the external gear and rotates the external gear. An annular reinforcing member 40 has a third surface 40a, a fourth surface 40b, a second lateral surface 40c, and a third opening 40d, the center of the third opening is aligned with the center of the first opening, and the fourth surface is secured to the first surface of the first case. The reinforcing member 40 has higher surface rigidity than the first case 11.

The present invention pertains to a split ring assembly for adjusting the throughput of a fluid of a hydraulic valve comprising an elastomeric element being adapted to mount a split ring around a hydraulic ram, wherein the elastomeric element is arranged around the outward circumference of the split ring, wherein the throughput of the fluid is adjustable depending on the degree to which the throughput of hydraulic fluid is limited by the split ring.

This invention provides a climbing tool for a space frame, comprising: a climbing pole, which includes a hook portion and a pull rod portion; a self-locking semi-ring, the middle of which is rotatably connected to the hook portion via a pivot point. When the climbing tool is hung on a space frame member and subjected to force, the self-locking semi-ring and the hook portion together form an open ring to accommodate the space frame member. The inner surface of the open ring is a continuous arc-shaped surface, and the angle at which the open ring encloses the space frame member is greater than 270°; and a handle connected to the pull rod portion. This invention effectively prevents slippage of the hook portion during climbing, even if the hook portion wobbles, due to the self-locking semi-ring, ensuring the safety of the worker.

The utility model discloses a simple ecological door lock which comprises an inner handle seat and an outer handle seat, an inner handle is rotatably arranged on the inner handle seat, and an outer handle is rotatably arranged on the outer handle seat. A back locking assembly is arranged in the inner handle, and a locking assembly is arranged in the outer handle. The locking assembly comprises a handle head on the outer handle, a locking cam and a locking column, wherein the locking cam and the locking column are rotationally arranged in the handle head. A lower locking groove is formed in the side wall of the outer handle seat, and an upper locking groove is formed in the outer handle. One end of the locking cam is connected with the linkage plate, the counter lock assembly drives the locking cam to rotate through the linkage plate, the locking cam extrudes the locking column outwards, one part of the locking column can penetrate through the locking hole of the handle head, and the upper end and the lower end of the locking column are arranged in the upper locking groove and the lower locking groove respectively. The outer handle is locked on the outer handle seat; a back locking split ring is omitted, and the door lock structure is simplified; the door lock production cost is reduced, and the appearance of the door lock is simpler and more attractive.

Methods and devices for foreskin restoration and reconstruction are provided that capture folded skin and allow the user to blow air pressure in the fold of skin, inflating the skin and placing it under tension to induce skin growth using devices that are comfortable and tolerable. The devices include an outer gripper, an inner cone, a metal core, an integrated check valve, an oral inflation tube connected to an air input, and a split ring weight attachment point, which together hold shaft skin without slippage and maintain air pressure and tension the skin, to provide partial to full foreskin restoration and reconstruction.

The invention provides a cascading flexible metasurface wave-absorbing composite material and a preparation method and application thereof. The composite material sequentially comprises a first flexible dielectric layer, a first coupling type active frequency selection surface layer, a second flexible dielectric layer, a flexible lossy substrate layer, a third flexible dielectric layer, a second coupling type active frequency selection surface layer and a fourth flexible dielectric layer, the unit structure of the frequency selective surface layer is any one of a square ring structure, a square structure, a square split ring structure, a square ring-square nested concentric structure or a T-shaped connection type square ring-square nested concentric structure, a traditional reflecting layer is replaced by the active frequency selective surface layer structure, the quarter-wavelength thickness limitation is broken through, and low-frequency ultra-thin wave absorption is achieved; the frequency selection characteristic of the active frequency selection surface layer is utilized to realize an electromagnetic wave absorption-screening-reabsorption cascade working mechanism, and the composite material has flexibility, thermal stability and conformality, and is suitable for the fields of electronic equipment electromagnetic compatibility management, aircraft radar stealth and the like.

The utility model relates to an unhooking hook which comprises an installation seat, a protruding piece is arranged on the installation seat, the protruding piece extends upwards, the upper portion of the protruding piece is bent towards one side, and the protruding piece and the installation seat form a split ring. A locking piece capable of opening or locking the opening is arranged at the opening of the split ring; a mounting hole is formed in the position, corresponding to the split ring, of the mounting seat, a telescopic buffer piece is arranged on the back face of the mounting hole of the mounting seat, the telescopic buffer piece is provided with a telescopic rod stretching into the mounting hole, and the telescopic rod is inserted into the split ring in an abutting-against mode and is connected with a connecting ring located in the split ring in an abutting-against mode. According to the unhooking device, after the ring section of the connecting ring is clamped into the closed ring, the telescopic rod of the telescopic buffer piece can stretch into the closed ring formed by the unhooking device from the mounting hole and abut against the ring section, located in the closed ring, of the connecting ring, so that the two ends of the connecting ring are clamped and extruded by the telescopic rod and the inner wall of the closed ring, and vibration movement of the connecting ring is avoided; therefore, the stability of unhooking connection is improved.