32 results about "Notch width" patented technology

An endoscope angle portion comprises an angle portion structure. The angle portion structure includes angle ring units each of which comprises pivoting joint portions extending from its both ends and has a shape that is notched obliquely in directions away from the pivoting joint portions, and wherein adjacent ones of the angle ring units is pivotally joined to form the angle portion structure, wherein a first angle ring unit of the angle ring units has a larger length dimension than that of a second angle ring unit of the angle ring units, and the first angle ring unit has a smaller notch width of a notched portion than that of the second angle ring unit, the first angle ring unit being nearer a base end of the endoscope angle portion than the second angle ring unit.

A method for estimating the shape of an auditory filter by finding a coefficient p of a roex (p, r) filter which is used as a model for the shape of the auditory filter is provided, which comprises the steps of: generating a tone S′; generating a masker of a notch width g and level Nx′ including in a notch the frequency f in which frequency characteristics of the external and middle ears of the subject are considered; transmitting to the subject a sound which superposes the masker on the tone S′; measuring the minimum notch width gx−a of the subject while varying the notch width g; calculating the coefficient p from an upper limit value gmax of the notch width g suitable for the subject and estimating the shape of the auditory filter from the coefficient p calculated above and the value x corresponding to the coefficient r.

The invention provides a magnetic core of a motor and a manufacturing method of the magnetic core. The magnetic core of the motor comprises a yoke part, teeth extending outwards from the yoke part and tooth crowns extending from the tail ends of the teeth along the circumferential direction, wherein each tooth crown comprises a left half tooth crown and a right half tooth crown; the magnetic core of the motor is formed by stacking multiple layers of first chips and multiple layers of second chips; each layer of chip comprises multiple groups of first-class teeth, second-class teeth, third-class teeth and forth-class teeth which are sequentially arranged; the left half tooth crowns of the first-class teeth are short tooth crowns and the right half tooth crowns are long tooth crowns; the left half tooth crowns and the right half tooth crowns of the second-class teeth are the short tooth crowns; the left half tooth crowns of the third-class teeth are the long tooth crowns and the right half tooth crowns are the short tooth crowns; the left half tooth crowns and the right half tooth crowns of the fourth-class teeth are the long tooth crowns; and the first-class teeth, the second-class teeth, the third-class teeth and the fourth-class teeth of the first chips are overlapped with the third-class teeth, the fourth-class teeth, the first-class teeth and the second-class teeth of the second chip respectively. By implementation of the magnetic core of the motor, the notch width can be reduced and the cogging torque can be reduced. By the manufacturing method provided by the invention, the material can be saved and the cost can be reduced.

The invention relates to an outer-tooth and inner-stator structure of a motor and a manufacturing method of the outer-tooth and inner-stator structure. The stator structure comprises silicon steel sheet stacks which are formed by sequentially superposing a plurality of silicon steel sheets, wherein the plurality of silicon steel sheet stacks are sequentially superposed to form stator splicing groups; the plurality of stator splicing groups are transversely butted in sequence to form an annular stator; each silicon steel sheet comprises an arc-shaped base part and one or more outer tooth parts; the outer tooth parts are uniformly arranged at the outer side of each arc-shaped base part; and the adjacent upper and lower silicon steel sheet stacks in the stator splicing groups are arranged in a manner that two ends are in opposite directions. The stator manufacturing method is simple, reliable and low in cost. The stator is assembled in a splicing manner, so that the utilization rate of the sheets can be greatly improved; processing can also be carried out by using a low-tonnage punch press; the cost of equipment is reduced; the automation degree is improved; each sub-part can also be wound and then assembled; and the outer-tooth and inner-stator structure is not limited by a notch width and is suitable for the stator with various requirements.

A motor controller includes: a notch filter arranged inside a control system; an oscillation frequency estimating section which estimates an oscillation frequency component in a motor; and a notch control section which controls a notch filter so as to change a notch frequency and a notch width. The notch control section changes a frequency between an oscillation frequency and a notch frequency set in a notch filter as a new notch frequency, while changing a notch width to a new notch width such that the notch width is larger after the change than before the change.

The invention provides a straight fin for a coke oven ascending pipe raw coke oven gas waste heat recycling and heat taking device. The straight fin comprises a straight fin body (1) and a set of V-shaped notches (2) formed in the straight fin body (1). The depth h of the V-shaped notches (2) is smaller than the width H of the straight fin body (1). In the longitudinal direction of the straight fin body (1), the distances between the adjacent V-shaped notches (2) are increased from bottom to top. The invention further provides a heat taking device comprising the straight fin and a power generation device. The straight fin is simple in structure, low in cost and convenient to use, the heat transmitting performance of the raw coke oven gas side is greatly enhanced, and the wall face temperature is increased. Meanwhile, the width, the angle and the height-direction distance of the V-shaped notches in the top end of the straight fin are determined according to temperature field distribution during device usage, and when the device is used, the longitudinal swelling amount of the top end of the fin is smaller than or equal to the notch width, and after total expansion in the height direction, the straight fin is still kept in a flat rectangle and cannot disengage from the inner barrel wall, and the service life is greatly prolonged.

The invention provides a cogging torque-based braking design method. The method comprises firstly applying an RMxprt model in Maxwell software to design a magnetic circuit scheme of a motor, and determining groove profile parameters of a motor stator; gradually increasing the motor stator notch width Bs0 in the software model, and observing the performance of the motor when the cogging torque meets the requirements; if the motor performance is reduced, gradually increasing the thickness of magnetic steel in the software model, so that the motor performance also meets the requirements while thecogging torque meets the requirements; finally importing RMxprt model design results into a 2D model in the Maxwell software to perform cogging torque and stator flux density verification, to confirmwhether the cogging torque reaches the requirements and whether the stator flux density is saturated; and if the requirements are not reached, readjusting the notch width and magnetic steel thickness, until the cogging torque and the stator flux density meet the requirements. According to the cogging torque-based braking design method, the defects of low brake reliability, mechanism redundancy, and heavy weight and the like are overcome, the reliability of a whole mechanism is improved while the motor performance is ensured, and the cogging torque-based braking design method is simple and convenient to design and easy to implement.

The invention discloses a system for online real-time monitoring of switch machine indication bar notch width. The system comprises eddy current sensors, collectors, a central monitoring manager and remote monitoring centers. Each eddy current sensor comprises an eddy current probe and an eddy current circuit; the eddy current probe is used for converting a gap between a check post and a notch of a check block into an eddy current signal, and the eddy current signal is processed by the eddy current circuit and output. The collectors are used for collecting data output by the eddy current sensors. The central monitoring managers are connected with the collectors through power cords and are used for receiving data collected by the collectors, in a power line carrier manner. The remote monitoring center is connected with one or multiple central monitoring centers and is used for receiving data transmitted by the central monitoring managers. The system has the advantages that stability and reliability are improved, false alarm rate and false negative rate are zero, the eddy current sensors are higher in reliability, sensitivity, resolution, response speed and interference resistance during long-term operation, and the system is suitable for various switch machines and various application environments.

The invention discloses a hub motor for an electric vehicle, which comprises a stator, a rotor and a connecting shaft, wherein the stator comprises an iron core and a bracket, the iron core is fixed on the bracket and is formed by laminating stator sheets in a spiral winding manner, and the notch width of a tooth socket, the outer diameter of the iron core, the thickness of the tooth lip of the iron core, the inner diameter of the iron core, the thickness of the yoke part of the iron core, the number of the tooth sockets of the iron core and the notch width of the stator sheet meet the following relation: the notch width of the tooth socket = pi x [the outer diameter of the iron core - 2 x the thickness of the tooth lip of the iron core - 2 x alpha x (the inner diameter of the iron core +the thickness of the yoke part of the iron core)] / the number of the tooth sockets of the iron core + the notch width of the stator sheet, wherein the value scope of alpha is 0.45~0.55, and the notch width value scope of the stator piece is 0~2 mm. The hub motor for the electric vehicle has the advantages that: the stator structure optimizes the tooth socket structure of the motor, improves the power density and the working efficiency of the motor, enhances the short-time overload capacity of the motor, reduces the temperature rise and the manufacturing cost of the motor, and prolongs the service life.

The invention relates to a roll immersed membrane capillary sludge deep dehydrator, comprising a sealed box, the box is provided with a movable cover, the bottom of the sidewall of the box is provided with a spoil disposal door, the upper surface of the base plate of the box is provided with a supporting frame, the supporting frame is provided with a filter body, the box under the filter body is provided with a discharging tube, the filter body is provided with a membrane capillary filtering device, the membrane capillary filtering device comprises a supporting barrel and a tubular filter cloth, the top of the supporting barrel is sealed, the bottom of the supporting barrel is a filter screen, the tubular filter cloth is arranged in the inner hole of the supporting barrel, the supporting barrel is opened with a filter tank, the notch width of the filter tank on the outer wall of the supporting barrel is less than the notch width of the filter tank on the inner wall of the supporting barrel. The invention is in operation, unit sludge treatment cost is less, treatment speed is fast, sludge moisture content after treatment is low, equipment is simple in structure, and operating cost is less.

The invention discloses an automatic separation method of a cut edge material of an optical diffusion plate. The automatic separation method comprises the specific implementation steps of partial cutting procedure, cooling conveying procedure, traction rolling procedure and edge material automatic separation procedure, wherein the edge material of the optical diffusion plate is subjected to non-penetrating partial cutting through an edge cutting device; a notch between the edge material and an optical diffusion plate body is subjected to depth extension during follow-up cooling and rolling; and the edge material and the optical diffusion plate body are automatically separated through an automatic separation device. The automatic separation device comprises a supporting cross rod and separation rods, wherein one separation rod is fixed to each of length ends of the supporting cross rod through welding; the distance between the outer sides of the two separation rods is equal to the widthdimension of the optical diffusion plate body; and the separation rods right face the notch of the optical diffusion plate. According to the automatic separation method and the automatic separation device, through the cutting mode, the notch width is decreased, sawing dust is avoided, the material utilization rate is increased, cleanliness of the optical diffusion plate is guaranteed while the working environment of a workshop is improved, input of manpower and material resources is reduced, and production cost is reduced.

The invention relates to a punching die for clamping teeth of a cup lid. An existing plain-end cutting knife is changed into a V-shaped or inverted-V-shaped pointed cutting knife, the clamping teeth are changed from plain-end teeth into V-shaped teeth or inverted-V-shaped clamping teeth, the pointed cutting knife can ensure that the cup lid is pierced during each punching, and the matching allowance between the V-shaped teeth or the inverted-V-shaped teeth and an edge opening of a cup body is large so that a better disengagement prevention effect is achieved; meanwhile, the structure of the punching die is also appropriately changed for solving the problem that the cutting knife is abraded, and the notch width can be adjusted and the service life of the cutting knife can be prolonged by increasing or decreasing gaskets; and the punching die has the characteristics of reasonable structure, good reliability and convenience in adjustment.

The invention discloses a guide rail type street walking aid system. Columns are arranged at certain intervals on the sidewalk, cantilevers are arranged on each column, and continuous guide rails are arranged on the cantilevers of each column; guide grooves are arranged at the bottom of the guide rails, and the guide grooves The width of the inner cavity is greater than the width of the guide notch; a sliding mechanism is installed in the guide groove, and a suspension buckle is connected to the sliding mechanism. The present invention can provide a certain amount of assistance for the user, and can bear part of the weight of the user's lifting items. Providing a track walking aid on the sidewalk can provide the elderly with travel conditions that are conducive to exerting their self-care ability and provide opportunities for the elderly to participate in social activities extensively. It has the effect of guiding the blind, and the function of triggering the site information is designed on the track to provide travel directions, destination arrival reminders and other functions for the blind.

The invention discloses a design method for a recess width variable MTD filter based on prior information. The method comprises the steps of 1) searching parameters; 2) obtaining a covariance matrix of ground clutters; 3) obtaining initialized interference signal power; 4) designing an FIR filter of a digit integrated method; 5) searching a power spectrum variance of the ground clutters; 6) obtaining an FIR filter of an optimal clutter improvement factor; and 7) designing the recess width variable MTD filter. According to the invention, the prior information of a radar surrounding scene is obtained, so that the clutter improvement factor of the output end of the filter is kept optimal. The problem that the recess width in the zero frequency position of the MTD filter is fixed in the prior art is solved. The MTD filter designed in the method has different expected recess widths for different central frequencies, and detection for low-speed movement objects is enhanced.

The invention discloses a guide rail type street walking aid system; columns are arranged on a sidewalk at certain intervals; each column is provided with a cantilever having a continuous guide rail; the bottom of the guide rail is provided with a guide slot, and the cavity width of the guide slot is bigger than the notch width of the guide slot; a slide mechanism is arranged in the guide slot, and connected with a suspension ring. The guide rail type street walking aid system can provide certain power assistance for users, and can bearing partial weight of the user pulling objects; the track walking aid equipment on the sidewalk can help elder people to have travel ability by themselves, thus providing wide social activity participation opportunities for elder people; the guide rail type street walking aid system has blind guide effect; the track is provided with site information trigger type broadcast function, thus prompting walking direction and destination arrival information for blind people.

The present invention provides a dual-power mechanically balanced multifunctional notching machine, which mainly solves the technical problem that when the conventional notching machine has a big power, heading mechanical force generated by a cutter is too big to keep the conventional notching machine held by hands, so the use of the conventional notching machine is not safe. The dual-power mechanically balanced multifunctional notching machine adopts a dual-power mechanically balanced method. Two symmetrical power systems are arranged in the machine; and the cutters rotate clockwise and counterclockwise respectively to notch half a notch in a width direction at the same time to form a complete notch width. The method and the notching machine have the advantages that: the rotation directions of the cutters are opposite, so the mechanical forces mutually counteract or balance, the heading mechanical force is small, the notching machine can be held by hands easily, the notching machine does not hurt human and has good safety and high power; and the method and the notching machine can notch all the architectural materials, including marbles, concrete and the like, overcomes the disadvantages of the traditional notching machine and has obvious effect.