68results about How to "Highly curved" patented technology

The invention relates to a pipe bending method, in particular to a bending method of pipes with a flexible chained-ball mandrel and solves the problem that high bending degree in the existing process of bending pipes having a mandrel causes mutual interference. The method includes: 1, threading a plurality of balls with a rope having a restraint ring at one end; 2, inserting a combined flexible chained-ball mandrel into a pipe to be bent; 3, placing a first rubber plug into one end of the pipe to be bent, fastening the first rubber plug through a first fastener, placing a second rubber plug into the other end of the pipe to be bent, and fastening the second rubber plug through a second fastener; 4, placing the pipe to be bent, onto a female die, and driving a male die to move down by a press until the pipe to be bent is bent; 5, after bending, loosening the first fastener, the second fastener, the first rubber plug and the second rubber plug to obtain a bent pipe. The bending method of pipes with one flexible chained-ball mandrel is applicable to pipe bending.

A pneumatic redundancy self-sensing multi-degree-of-freedom flexible nimble finger comprises a cylindrical flexible finger base body and a circular-truncated-cone-shaped flexible connecting base body. The flexible finger base body is provided with four pneumatic cavities distributed circumferentially and evenly in the axial direction. A bent inner core is arranged at the axis of the flexible finger base body, and tube connectors are arranged at the end of the flexible finger base body. Four micro sensitive channels distributed circumferentially and evenly are formed in the peripheries of the pneumatic cavities. Each micro sensitive channel comprises an arc sensitive channel body and a linear sensitive channel body and is filled with gallium-indium-tin liquid alloy or a liquid sensitive piezoresistive element. Four rubber tube connectors are arranged at the finger root of the flexible nimble finger and correspond to the pneumatic cavities. The pneumatic redundancy self-sensing multi-degree-of-freedom flexible nimble finger has the advantages of being simple in structure, low in weight, clean, safe, large in working space, high in control precision and the like, the effect that the multi-degree-of-freedom flexible mechanical finger has high precision during operation can be ensured, and the finger can be widely applied to the multiple fields such as industrial and agricultural production, national defense security and medical rehabilitation.

The invention discloses a display device and a manufacturing method thereof, and belongs to the technical field of displaying. The display device comprises a hook-surface display panel and a glass cover plate fitting the hook-surface display panel; the glass cover plate comprises a glass substrate and a refraction layer, and the refraction layer is located at one side, close to the hook-surface display panel, of the glass cover plate; the display device is provided with a first curve area. The curvature R1 of the glass substrate in the first curve area is minimum, R1 is less than Rx, and the refractive index of the glass substrate in the first curve area is Nj1. In order to avoid illumination differences between the first curve area and other areas in the display device, the refractive index of the glass cover plate in the first curve area is Ng1, the refractive index of the glass cover plate in other areas is Ngx, the relationship is set that Ng1 is less than Nj1, and Ng1 is less thanNgx. Therefore, the illumination differences between the first curve area and other areas are reduced, the illumination uniformity of the display device is improved, and the display quality is improved.

The invention relates to a finger joint rehabilitation training evaluation method. On the basis of a soft glove with pneumatic structures on finger joint positions respectively, various rehabilitationtraining methods are designed through high-precision tracking of hand movement postures, and the active and passive combined rehabilitation training is realized for an affected side hand of a hemiplegic patient from multiple aspects. Meanwhile, a system of the finger joint rehabilitation training evaluation method is designed, an optical motion capture module based on binocular vision is provided, the movement range measurement and calculation can be performed on palm fingers, far-end finger joints and wrist joint of a hand of the patient to obtain a hand movement state, and the calculation date serve as data support of the hand movement state, and can serve as the real-time input of movement signals of the affected side soft glove. Meanwhile, a grip strength sensor and a finger pinchingforce sensor are added at the same time, so that the evaluation of hand muscle strength and movement of the patient is realized, and the closed-loop rehabilitation treatment of performing evaluation,performing training and then performing evaluation in the rehabilitation training is completed.

The invention relates to a method for inhibiting flow separation in a transition section of a compression system of an engine of a low-bypass aerial turbofan by using a guide vane. The method comprises the following steps: placing the guide vane at a first curved conduit on the inner wall of a transition section of an air compressor, and forming a vane force with gradient opposite to that of the prior pressure at the curved conduit of the transition section through changing a peripheral included angle of a laminated line and a radial line of the guide vane, so as to reduce pressure gradient of the flow direction at the curved conduit, and inhibit the flow separation in the transition section. Because the method can inhibit the flow separation in the transition section, the method can increase bending degree of the transition section, so as to reduce the length of the transition section. At the same time, because the guide vane is placed in the transition section, the method saves space occupied by the prior guide vane, and is favorable for reducing the length of the whole air compressor. The length of the transition section is estimated to be shortened by about 20 percent by adopting the method and the method contributes to the thrust mass ratio of the engine by about 1 percent.

Disclosed is a gallium nitride-based light emitting diode structure. The gallium nitride-based light emitting diode structure comprises a substrate, a bottom layer, an N type layer, a light emitting layer and a P type layer in sequence; the gallium nitride-based light emitting diode structure is characterized in that the P type layer consists of an electron barrier layer, at least one energy band deformation layer and a hole injection layer; the energy band deformation layer is inserted in the electron barrier layer or positioned between the electron barrier layer and the hole injection layer, or inserted in the hole injection layer or positioned on the hole injection layer; and the energy band deformation layer is a non-P type layer with carbon impurity content of not greater than 5*10<16>cm<-3>. By virtue of the low carbon impurity content, the energy band of the energy band deformation layer can be bent, and the two-dimensional hole gas concentration on a contact interface between the energy band deformation layer and the adjacent layer can be increased.

The invention discloses a generating method cycloid tooth bevel gear grinding method. The generating method cycloid tooth bevel gear grinding method comprises the following steps: first, a machining coordinate system set of a generating method cycloid tooth bevel gear is established; second, the tooth surface equation of a generating wheel is determined, and the generating wheel tooth surface of the generating method cycloid tooth bevel gear is the gear tooth surface; third; grinding wheel parameters for gear grinding are determined; fourth, interference analysis and correction calculation areconducted; and fifth, the gear grinding tool position is calculated. According to the generating method cycloid tooth bevel gear grinding method, a grinding wheel structure of gear grinding and geargrinding moving parameters are determined according to a tooth surface machining mathematical model and parameter calculation, one tooth surface is ground in one-time gear grinding movement by adopting a large-diameter conical surface grinding wheel, and thus the precision and the efficiency are high.

The invention discloses a tunnel inverted arch rebar connecting rib bending machine which comprises a supporting face plate, a rolling shaft, a driving mechanism and an ejector. A first guide wheel is arranged at one end of the supporting face plate, a second guide wheel is arranged at the other end of the supporting face plate, an adjusting hole is formed in the supporting face plate, the adjusting hole is formed between the first guide wheel and the second guide wheel and is formed in one side of the connecting line of the first guide wheel and the second guide wheel, a bearing is arranged on the rolling shaft and arranged in the adjusting hole, a rolling wheel is arranged at one end of the rolling shaft, the other end of the rolling shaft is connected with the driving mechanism, the first guide wheel, the second guide wheel and the rolling wheel are all arranged on the front side face of the supporting face plate, and a sliding groove allowing the driving mechanism to slide along with the rolling shaft is formed in the rear side face of the supporting face plate. The tunnel inverted arch rebar connecting rib bending machine can pre-bend one portion of an inverted arch rebar connecting rib, and can further carry out continuous rolling on the inverted arch rebar connecting rib, and the bending of the inverted arch rebar connecting rib is achieved.

The embodiment of the invention relates to the field of appliances, in particular to a door body suction assisting device and a refrigerator and is used for increasing the suction assisting force provided by a suction assisting device body. According to the embodiment, the door body suction assisting device comprises a hinge plate and a suction assisting device body, wherein the hinge plate is fixedly connected to a refrigerator body and provided with a suction assisting arm, and the two side surfaces of the suction assisting arm are provided with protrusions; and the suction assisting device body is fixedly connected to a door body, hinged to the hinge plate and provided with bent arms capable of generating elastic deformation. When the door body is closed, the bent arms are located on the two sides of the suction assisting arm correspondingly and are matched with the protrusions of the suction assisting arm correspondingly to generate elastic deformation. Thus, in the door body closing process, two contact surfaces exist between the bent arms of the suction assisting device body and the protrusions of the suction assisting arm, and the suction assisting device body can produce two suction assisting forces through the two protrusions and the two bent arms, so that the suction assisting forces of the suction assisting device are increased.

The invention discloses an unmanned aerial vehicle control system and control method for meeting the autonomous landing requirement of a maneuvering platform; and the system comprises a motion information obtaining module which is used for obtaining motion information of a target platform and an unmanned aerial vehicle, a difference module used for calculating relative motion information of the target platform and the unmanned aerial vehicle, a proportional guidance module used for obtaining the three-axis overload amount of the unmanned aerial vehicle according to the relative position information, an attitude calculation module used for obtaining the expected attitude quantity of the unmanned aerial vehicle according to the three-axis overload quantity, and a flight control module used for controlling the flight attitude of the unmanned aerial vehicle according to the expected attitude quantity so as to realize autonomous landing of the unmanned aerial vehicle on the maneuvering platform. According to the control system and method provided by the invention, a proportional guidance algorithm is adopted, so that three-axis overload change and speed change in the autonomous landingprocess of the unmanned aerial vehicle are stable, the landing trajectory is smooth, a target platform can be tracked quickly and accurately, and accurate autonomous landing is realized.

The invention belongs to the field of soft mechanical arms, and provides a pneumatic soft clamping hand with a variable grabbing range and a using method of the pneumatic soft clamping hand. The pneumatic soft clamping hand comprises a finger supporting frame and soft fingers, wherein the positions of the soft fingers at the supporting frame extending end are adjusted by forming guide grooves in the supporting frame extending end of the finger supporting frame, and further the opening degree of the soft fingers is adjusted, so that the grabbing force is increased to adapt to different grabbing objects; large cavities and small cavities are provided with air inlets and are independently controlled by an air source, so that the bending degree of the soft fingers is increased, the clamping hand has higher stability in the object grabbing process, and grabbing is firmer; each soft finger is provided with a corrugated large cavity and the corrugated small cavity, and different air pressures are input into large air bags and small air bags of the cavities, so that objects are grabbed and released by the soft fingers; and the soft fingers are made of flexible materials, so that the degree of damage to an object can be reduced when the object is grabbed.

The invention provides a rigid-flexible coupling bionic anti-sinking energy-saving buffer walking wheel which comprises a spoke plate, walking wheel leg and foot single bodies and hip joint imitatingparts, and the spoke plate is connected with each walking wheel leg and foot single body through the hip joint imitating parts; a plurality of walking wheel leg and foot single bodies are distributedon the spoke plate in a circular array mode, and each walking wheel leg and foot single body is composed of a walking wheel leg and a walking wheel foot. Wild duck hind limbs are selected as bionic prototypes, and the biological assembly characteristics of rigid-flexible coupling of legs and feet of wild ducks and the constantly changing movement postures of the legs and the feet during movement are simulated. The legs of the walking wheels are bent and restored, so that the effects of energy conservation and buffering are achieved; the toe webs at the feet of the walking wheel are actively opened and closed, so that the ground contact area is changed, and the anti-sinking and anti-sideslip effects are achieved. The rigid-flexible coupling walking wheel leg-foot single bodies actively change the moving posture and the ground contact area, so that the trafficability and traction performance of the walking wheel on soft grounds such as mudflat, muddy and marsh are improved.

The invention provides a wall plastering slurry throwing tool. The wall plastering slurry throwing tool comprises a supporting rod, a connecting mechanism, a feeding mechanism, a spraying mechanism and an accelerating mechanism, wherein the spraying mechanism comprises through holes, a first roller, ratchet wheels, a limiting rod, a rotating rod and a second roller, the two ends of the first roller and the two ends of the second roller are fixedly connected with the ratchet wheels, and the through holes are formed in the side wall of the first roller and the side wall of the second roller at equal intervals; the limiting rod is installed at one end of the first roller and one end of the second roller, and the limiting rod is rotationally connected with the rotating rod; the accelerating mechanism comprises scrapers, a fixing shaft, a first gear and a second gear, the multiple scrapers with the arc-shaped side walls are symmetrically installed on the side wall of the fixing shaft, and the elastic scrapers are slidably connected with the first roller, the second roller and the through holes. The tool further comprises a driving mechanism. The wall plastering slurry throwing tool hasthe advantages that slurry throwing is uniform, the labor amount of people is reduced, and cement slurry waste is avoided.

The invention discloses a display screen assembly and electronic equipment. The display screen assembly comprises a flexible cover plate and a flexible display panel, at least part of the flexible cover plate covers the flexible display panel; and the flexible display panel comprises a supporting layer and a functional layer, the functional layer is located between the supporting layer and the flexible cover plate, a plurality of first stress grooves distributed side by side are formed in the side, away from the functional layer, of the supporting layer, and the flexible display panel can be bent and deformed at least at any first stress groove. According to the flexible display panel, the first stress grooves distributed side by side are formed in the flexible display panel, stress generated when the display screen assembly is bent and folded can be eliminated or reduced, small-radius folding and curling can be achieved, and meanwhile the foldable and bending deformation capacity of the display screen assembly is achieved.

The invention discloses an animal excrement collection device for veterinarians, and belongs to the technical field of excrement collection. The animal excrement collecting device for the veterinariancomprises a collecting cylinder, a collecting part, a folding structure, a compressing structure and a limiting structure. The collecting part is arranged on the upper end surface of the collecting cylinder; the collecting part can be closed and opened relative to the collecting cylinder; the collecting part can be used for collecting solid excrement and liquid excrement in a folded state; the compression structure is slidably connected to the inner wall, close to the lower end, of the collection cylinder, and dynamic seal is formed between the compression structure and the inner wall of thecollection cylinder. When the collecting part is folded, a sealed storage space is formed among the lower part of the collecting part, the upper part of the compression structure and the inside of thecollecting cylinder; after the collecting part is folded, relatively dry and liquid excrement is stored in the sealed storage space; through the cooperative use of the collection part, the folding structure and the compression structure, solid excrement and liquid excrement can be collected at the same time, the excrement is not prone to leakage in the transportation process, and the collection cylinder and the collection part are easy to clean.

The invention discloses a thermal correction mold for a one-two shift fork, which belongs to the field of mold design technology, and includes an upper mold, a lower mold, an upper mold groove, a lower mold groove, and a fixed boss. The base bodies of the upper mold and the lower mold are uniform. It is a cuboid, the upper mold groove is located on the lower surface of the upper mold, the lower mold groove is located on the upper surface of the lower mold, the upper mold groove and the lower mold groove are arranged symmetrically front and rear, and the fixed boss is arranged on the left-right symmetrical line of the upper surface of the lower mold One at the front and one at the front and back, and fixed counterbores are set at the corresponding positions of the upper mold. When the upper mold and the lower mold are closed, the fixed boss and the counterbore are embedded and installed. High, the first and second gear shift fork heat correction mold disclosed by the present invention has good safety, the upper mold and the lower mold are conveniently fixed, the thermal correction accuracy of the parts is high, the bending degree of the upper mold groove and the lower mold groove is large, and the first and second gears The shift fork is placed between the upper mold and the lower mold at high temperature for thermal correction processing, and the forming efficiency is high.

The invention relates to a restorer, in particular to a restorer for a half-paralyzed patient. According to the technical problem, the restorer for the half-paralyzed patient, which can prevent body fatigue and improve recovery efficiency, is provided. The restorer comprises chair support rods, a fixing device, a bracket, a first rotating rod, a first gear, a first hollow support plate, a second gear, a third gear, a fixing plate, a pressing block and the like. The chair support rods are connected with the bracket through the fixing device. The upper part of the front side of the bracket is rotatably connected with the first rotating rod, the first rotating rod is connected with the first gear, and the first hollow support plate is connected with the first gear. According to the invention,the recovery of patients with different heights can conveniently use the device for recovery by moving a first arc-shaped clamp plate to a suitable position from left to right. By holding a first handle by hand, a fourth gear rotates clockwise, so that the leg part of the half-paralyzed patient can swing up to a right position, and the leg part of the half-paralyzed patient can be bent for recovery.

The invention provides an anti-static teflon electric wire, and relates to the technical field of teflon electric wires. The anti-static teflon electric wire is composed of an outer layer, a teflon layer, a glue layer, an insulating layer, a wire core shielding layer and a wire core body; the teflon layer is fixedly installed on the inner side of the outer layer, the glue layer is fixedly installed on the inner side of the teflon layer, and the insulating layer is fixedly installed on the inner side of the glue layer. An insulating layer is fixedly installed on the inner side of the glue layer, a wire core shielding layer is fixedly installed on the inner side of the insulating layer, and a wire core body is installed in the wire core shielding layer. According to the invention, through the arrangement of the ferrule, the convex particles and the hexagonal blocks, the friction force of the outer layer can be increased, the shaking amplitude of the cable in an electric appliance is reduced, the wear degree is further reduced, the service life is prolonged, and actual use is facilitated; meanwhile, the buffer pad is arranged between the outer layer and the teflon layer, so that when the outer layer is bent, the teflon layer can be prevented from being bent excessively through the buffer pad, and the service life of the teflon layer is further prolonged.