69results about How to "Relatively small" patented technology

A delta robot has motor/gearing units, which are respectively assigned to an arm and which are disposed on one side each of a triangle. Each motor/gearing unit has a gearing, by virtue of material-locking and/or positive-locking connection of gearing components, is free from backlash over the whole of the motional range of the gearing, allowing virtually all aspects fundamental to the delta robot to be optimized, especially the rigidity, the control characteristics, the spatial requirement, the speed and the positioning accuracy.

A plurality of images of portions of a fingerprint surface is generated by measuring structural features the portions of the surface with a sensor array as the surface is moved relative to the array. A two-dimensional image of the fingerprint surface is constructed from a portion of the plurality of images. In one embodiment, a varying voltage is applied to a finger positioned over an exciting electrode and a capacitive sensor array, and the capacitance or impedance through the finger is measured between the electrode and the array to detect variations in capacitance or impedance caused by variations in the structural features of the fingerprint surface. In one embodiment, the speed of the fingerprint surface relative to the sensor array is determined by sensing features of the fingerprint surface at two spaced-apart sensing elements and determining the speed from the distance between the sensing elements and the time lapse between passage of identical features of the fingerprint surface from one of the sensing elements to the other.

The invention discloses a table tennis ball serving machine impact device which comprises an electrical control portion and an impact device. The impact device comprises a yoke, a serving guide pipe, a rear end cap and an electromagnetic coil, wherein the serving guide pipe and the rear end cap are fixedly arranged at two ends of the yoke, and the electromagnetic coil is fixedly arranged in the yoke. An impact armature is arranged in a containing cavity enclosed by the serving guide pipe, the rear end cap and the electromagnetic coil, a permanent magnet is fixedly arranged on the rear end cap, an impact head component is fixedly arranged on the impact armature, the electromagnetic coil is provided with at least two windings with the same direction but different electromagnetic driving forces, and the highest magnetic field intensity of the permanent magnet is equal to the highest magnetic field intensity which can be generated by the electromagnetic coil. Impact and return are safe and reliable without return springs, by overlapping the electromagnetic driving forces with permanent magnet assisting force, the output kinetic energy and impulses of the impact armature are greatly improved, and the impact armature is simple in structure and small in relative size. Moreover, the impact armature can output at least three impulses with different strength for table tennis balls, and can effectively simulate the change of actual ball serving strength.

The invention relates to an air booster with a brake master cylinder. A front shell (35) of the air booster is connected with the brake master cylinder (20), vehicles with requirement of hydraulic brake and unable to meet requirements of braking force by adopting an air booster with a brake master cylinder assembly in the prior art are replaced, the braking force can be exponentially enlarged through air boosting, and relative size of the air booster is smaller than that of the vacuum booster with the brake master cylinder and can better meet the installation requirements; an input push rod (3) in the air booster can stop at optional positions during pushing, and when pressure force and hydraulic pressure are balanced, an air inlet valve (C) is closed, and a follow-up control function of the air booster with the brake master cylinder can be accordingly realized. In addition, an exhaust pipe (38) is connected with a silencing check valve through a hose outside a cab, so that dust particles can be effectively prevented from entering the cavity of the booster, the cavity is kept clean, and meanwhile, exhaust noise of the cab is reduced.

The invention discloses a sensor detection device for composite gas. The sensor detection device comprises a gas chamber main body, a gas chamber connector, a sensor group, a pin PCB and a signal processing PCB. The air chamber body is provided with a plurality of independent sensor set installation cavities so that the sensor sets can be isolated from one another, and the air inlet ends of the sensor set installation cavities are communicated with a public air cavity so that the sensors can detect air. A sealing ring is arranged at the joint of the air chamber connector and the air chamber body to form a sealing structure, a containing cavity is formed in the air chamber connector to contain the two PCBs, and a connecting part is arranged at the lower end of the air chamber body. The problems that a traditional all-in-one air chamber is large in size and complex in assembly are solved. Meanwhile, each sensor can make contact with air in a public air cavity area for detection. The problem that an air path of the traditional all-in-one air chamber is redundant is solved, cross interference during measurement of the sensors is avoided, and the T90 testing time of the sensors is greatly shortened.

The invention relates to a rotary vane high-pressure steering engine, mainly comprising a revolving shaft, a stator plate, a moving plate, a cylinder body, an upper cover and a lower cover. The revolving shaft is a coil typed revolving shaft with round end faces respectively arranged at the two ends, the cylinder body is sheathed on the round end faces of the coil typed revolving shaft, a sealing ring is arranged between the round end faces of the coil typed revolving shaft and the cylinder body, the moving plate is fixed between the revolving shaft and the two round end faces through a sealing ring of the moving plate by bolts, the stator plate is fixed on the inner wall of the cylinder body of the adjacent moving plates through a sealing ring of the stator plate by bolts, oil holes respectively arranged on the two sides of the stator plate are communicated with an oil supply hole and an oil return hole of the cylinder body, and the upper cover and the lower cover are arranged at the two ends of the coil typed revolving shaft through a shaft housing and fixed at the two end faces of the cylinder body by bolts. The invention has the advantages that rudder pushing is smooth, volume is small, axial force does not exist, a cylinder cover does not bear the oil pressure, high-pressure oil can be used for working, maintenance is convenient, and a double steering engine or a multi-stage steering engine can be combined conveniently, and the invention is applicable to large, medium and small-sized ships.

The invention discloses an arteriovenous cross compression symptom detection method and device, electronic equipment and a readable storage medium, and relates to the technical field of deep learning,the technical field of computer vision and the field of AI medical treatment. According to the specific implementation scheme, the method includes performing blood vessel segmentation on a to-be-detected image to obtain a blood vessel segmentation result that whether each pixel in the to-be-detected image has a blood vessel or not; determining a blood vessel intersection point according to the blood vessel segmentation result; acquiring a region of interest ROI image of the blood vessel intersection from the to-be-detected image; utilizing a classification model to classify the ROI image to obtain a classification result of whether the ROI image has arteriovenous cross compression characteristics or not, wherein the classification model is obtained by training in advance based on a supervised training mode. According to the invention, the accuracy of the arteriovenous cross compression symptom detection result can be improved.

The invention relates to a balancing charging and discharging device of a lithium battery management system. The charging and discharging device is a topology network comprising lithium battery single bodies from the first to the Nth, inductors from the first to the Nth and switching tubes from the first to the Nth, wherein the lithium battery single bodies from the first to the Nth are connected in series through an rth diode and the rth inductor, the Nth lithium battery single body, the Nth inductor and the Nth switching tube are connected in series, a first input end of the (N-1)th inductor is connected with a first connecting end of the Nth inductor through the (N-1)th switching tube, and an (N-1)th diode and an Nth diode are sequentially connected between the first input end of the (N-1)th inductor and a second connecting end of the Nth inductor in series. The balancing charging and discharging device can rapidly achieve simultaneous discharging of the lithium battery single bodies and reallocation of voltage.

The invention relates to a filtering decelerator which comprises: an eccentric decelerating mechanism, a filtering spline mechanism and a three-direction end thrust bearing. The eccentric decelerating mechanism comprises: an eccentric wheel (6), a rolling bearing, a cylindrical gear (3) and an inner gear (1); the filtering spline mechanism comprises an eccentric wheel (6), a steel ball (5), a cylindrical gear (3) and an output inner gear (9); the three-direction end thrust bearing connect the inner gear (1) with the output inner gear (9), use the eccentric wheel to realize the deceleration of a pair of gear wheel that short of tooth tolerance; the filtering spline mechanism comprises a group of gear wheels that have the same tooth number and diameter, it filters the high order revolution wave and output low frequency rotary.

The invention provides a two-way multiplier telescopic ferry vehicle, which includes a vehicle frame and a motor reducer, the motor reducer drives double output shafts, and the double output shafts are connected to axles through couplings, wheels are arranged on the axles, and the upper part of the frame A telescopic device frame is provided, a gearbox slider is arranged above the telescopic device frame, and a telescopic arm is arranged on the gear box slider, and a drive gear set is provided at the lower end of the middle position of the telescopic device frame, and the drive gear set drives the gearbox slider. The sliding block of the gear box is provided with a telescopic gear set, and the telescopic gear set drives the telescopic arm, and the telescopic arm is provided with a drying car lock hook device. The invention has a long telescopic stroke, can complete the material transfer from one side to the other at one time without adjusting the direction of the two-way transfer perpendicular to the moving direction of the vehicle, has a compact structure, relatively small volume and reliable operation, and can greatly save space or space and manpower. Suitable for use in brick drying rooms.

The invention relates to a preparation method of mesoporous and micropore carbon aerogel, and belongs to the technical field of capacitor material preparation. The preparation method comprises the steps that firstly, pine bark powder rich in lignin and cellulose is used as a raw material, and is blended with lye and a mixed solution is ultrasonically treated, and then put into a high-pressure reactor to react to obtain a stewing product, subsequently, phenol, the stewing product and formaldehyde are mixed to react to obtain a pre-prepared liquid, a pretreated gel is obtained through a heatingreaction, carbonizing is conducted after supercritical drying, and finally the mesoporous and micropore carbon aerogel is prepared. The mesoporous and micropore carbon aerogel prepared by the preparation method has the large specific capacity and specific surface area, the pore size is mainly distributed near mesoporous and the micropores, the rate capability is excellent, and wide application prospects are achieved.

The invention belongs to the technical field of cooling lampblack exhaust and discloses a high-static-pressure cooking lampblack treatment device and a range hood. The high-static-pressure cooking lampblack treatment device comprises a lampblack suction structure, a lampblack grease and particle removal structure, a lampblack exhaust structure and a silencing structure, wherein the lampblack suction structure is composed of a condenser plate, a negative-pressure distribution filter and a lampblack suction fan; the lampblack grease and particle removal structure is composed of the negative-pressure distribution filter; the lampblack exhaust structure is composed of the lampblack suction fan, a static pressure tank, an exhaust pipeline and a check valve; and the silencing structure is composed of the negative-pressure distribution filter, the static pressure tank and a lining sound absorption material. According to the high-static-pressure cooking lampblack treatment device, the static pressure tank is arranged at an air outlet of the lampblack suction fan, the flowing pressure of gas discharged from the lampblack suction fan is further converted into static pressure; under the condition of not increasing the power of the range hood, effective energy of resistance of the exhaust pipeline is overcome to the maximum extent to achieve complete exhaustion of lampblack; meanwhile, through reasonable arrangement of the negative-pressure distribution filter and the lining sound absorption material of the static pressure tank, the high-static-pressure cooking lampblack treatment device achieves the effects of high efficiency, silence and environmental protection.

The invention discloses an adsorption type water-cooling machine, comprising a condensation chamber, an absorption chamber, an evaporation chamber, a liquid storage tank, a booster pump and a spraying tube. Sealing turnover plates are arranged among the chambers, and blowers are arranged below the turnover plates, the booster pump is arranged between the liquid storage tank and the spraying tube and connected with the liquid storage tank and the spraying tube through pipelines, the spraying tube is arranged above an evaporator, the booster pump is arranged in a sealing chamber, and a condenser and the evaporator are shared by a group of absorption beds. The adsorption type water-cooling machine has the advantages of small size, high refrigeration and low manufacture cost.

The invention discloses a novel paint drying device, which comprises an oven, a turntable motor, a mechanical arm motor, a main circuit, an alternating current control circuit and a direct current control circuit. The oven has an openable window for taking and placing a workpiece; a bracket, which is divided into a plurality of equal sections and rotationally hold the workpiece, is arranged at the bottom of the cavity in the oven, and the plurality of brackets form a turntable; heating tubes are uniformly distributed on the two sides of the cavity; the cavity wall of the cavity is a thermal-insulation layer; and a mechanical arm for taking and placing the workpiece is arranged on the opposite side of the window. A plurality of groups of heating tubes and frequency converters are arranged in the main circuit, and a programmable controller is arranged in the direct current control circuit. In the invention, the heat loss is small, the energy-saving effect is obvious, the automation degree is high, the temperature control is accurate, the baking time is accurate, labor resources are saved, product quality is guaranteed, economic benefit is great, delivery can be made quantitatively on time, lean product requirement is met, production arrangement is made easier, volume is small and space is saved.

The invention discloses a bionic compound eye type laser radar system and method, and the system comprises a plane pulse array laser transmitting system, an echo receiving system, and a signal processing unit. The planar pulse array laser emission system consists of a pulse laser, a collimating lens, a spectroscope, a beam expanding lens group, an aperture diaphragm array and a planar micro lens array which are sequentially arranged according to a light path sequence, and is used for modulating parallel array light from a single-point pulse laser light source; the echo receiving system consists of a curved surface micro lens array, an optical fiber light cone and a photoelectric detector which are arranged in sequence, and is used for outputting a spatial distance image of wide-angle distance measurement; and the signal processing unit obtains a required spatial distance image through processing.

The invention discloses a multifunctional testing machine for a corrugated pipe. The multifunctional testing machine comprises a base, a guide rail, a common cross beam seat, a torsion motor assembly,a tension and pressure sensor assembly, a hose bending mechanism, wherein the guide rail is U-shaped, and the opening side of the guide rail is connected with the base; the common cross beam seat isconnected to the guide rail and can translate up and down along the guide rail; and three lower joints in one-to-one correspondence with a first adapter assembly, a second adapter assembly and a thirdupper joint assembly are arranged at the top part of the base. According to the multifunctional testing machine, projects such as torsion test, tensile test and bending test of the corrugated hose can be completed, and the effects of integration and cost saving are achieved; the torsion test, the tensile test and the bending test are integrated through using the common cross beam seat, corrugatedpipes of the same batch can be tested, and the test efficiency is improved; the structure is simple, the operation is convenient, the installation before the test is fast, and the test efficiency isimproved; and test accuracy is high.

The invention discloses a four-freedom-degree fine adjustment device comprising a horizontal moving table erected on a platform, and the horizontal moving table comprises a sliding rail, a lower sliding plate is matched with the sliding rail in a sliding mode, a scissor type lifting table is arranged on the lower sliding plate and comprises an upper fixing plate and a lower fixing plate, four equilateral quadrangles in two row and two column are correspondingly matched, and the two opposite top ends of the equilateral quadrangles are fixed to the upper fixing plate and the lower fixing plate, and the other two top ends and the corresponding top ends of the equilateral quadrangles on the same column are connected together through transverse rods in a pairwise mode. A rotating disc is arranged at the upper end of the upper fixing plate of the scissor type lifting table, a horizontal moving platform is placed on the rotating disc, clamping devices are distributed on the upper end face of the upper sliding plate, and two rows and three columns of conical nests corresponding to one another are respectively distributed in the two sides of the upper sliding plate and the two sides of the lower sliding plate. The fine adjustment device is high in positioning precision, convenient to operate and capable of precisely installing different parts and also achieving delimiting of a scale mark at any position.

The invention discloses multifunctional fitness equipment. The multifunctional fitness equipment comprises a frame, a pair of supporting pieces and a cross rod, wherein the frame is rectangular and comprises an upper frame and a lower frame; a first steel component is arranged at the connection position of the upper frame and the lower frame; the first steel component as well as the upper frame and the lower frame are fixed through bolts, so that the upper frame and the lower frame are detachably connected; the pair of supporting pieces are arranged on the left section of the frame and the right section of the frame correspondingly and are arranged oppositely; a second steel component is arranged at the connection position of each supporting piece and the frame; any one of the second steelcomponents and the frame as well as the corresponding supporting pieces are fixed through bolts, so that the supporting pieces are detachably connected with the frame; the cross rod passes through and is fixed on the pair of the supporting pieces. The multifunctional fitness equipment is small in occupied area, lightweight, easy to disassemble and change and compact in structure, and can performdifferent forms of exercises according to requirements.

The invention discloses a switch machine driving system with open-phase protection, and belongs to the switch machine technology. A digital input unit is provided with input signals DO1 and DO2; a relay is controlled to be sucked up or closed by input signals DO1 and DO2; by controlling the input sequence of the input signals DO1 and DO2, a first output interface or a second output interface of a commutation circuit is enabled to output, and the actuation of a first electronic switch or a second electronic switch is controlled, so the commutation operation of the motor of a switch machine is realized; an input signal DO1 sequentially passes through the delay circuit and the reversing circuit, and an input signal DO2 sequentially passes through the delay self-locking circuit and the reversing circuit. According to the invention, the overcurrent condition is detected during locked-rotor and phase loss, the drive of the switch machine is cut off, an open-phase protector is not needed, and protection of phase loss, locked-rotor and the like can be realized on hardware. The method that the electronic switch is firstly disconnected and then connected compared with a relay node is ensured by adopting digital quantity delay, so that ignition arc of the relay node can be effectively avoided.