81results about How to "Addressing design flaws" patented technology

The invention discloses a GPS positioning method and GPS software receiver which is based on dual-core processor, wherein, GPS positioning method includes the following steps: lower frequency process, signal capture, parallel arithmetic carrier wave, C / A code tracking process, pseudorange and ephemeris data resolving, satellite preferable choice, single point positioning resolving involved in GPS receiver and output; GPS software receiver which is based on dual-core processor, including GPS PF hardware part and PC, the PC machine at least includes two parallel equipped processors the first arithmetic processor and second arithmetic processor. The invention GPS positioning method uses multi-operation core processor as the operation platform, which designs and achieves parallel processing and algorithms for capturing and tracking GPS signal, which reduces resolving time significantly and enhances working efficiency of work.

The invention discloses a hand-operated gearbox gearshift performance testing apparatus which includes a first sensor, a second sensor, a third sensor, a data collector, and a data processing unit. The first sensor is arranged in the position of a gearshift level. The second sensor is used for detecting the displacement amount of the gearshift level in the gear-selection and gear-shift process. The third sensor is used for detecting the displacement amount of a gearshift fork in the gear-shift process. The data collector is connected to the first sensor, the second sensor, and the third sensor. The data processing unit is connected to the data collector. The hand-operated gearbox gearshift performance testing apparatus can realize the test of the hand-operated gearbox gearshift performance, and effectively evaluates the influence brought by customer complaints caused by the gearshift problem of the hand-operated gearbox. Through professional manipulation, the stuck and unsmooth problems in the gear-shift process are simulated, and design defects of a gearshift mechanism or a gearbox body are pertinently solved.

The invention discloses a design method of a large-torque composite transmission shaft structure, and belongs to the field of design of a power transmission structure member. The design method comprises the following steps: selecting a composite system and a metal material; acquiring an equivalent elastic modulus E and an equivalent shear modulus G of a transmission shaft; determining the size of a minimum structure through formula computing; verifying according to the conditions that Xt<0.627> is more than T / Wt and [theta] is more than theta; using finite element software ANSYS to implement structure analysis and stacking-sequence optimization on a shaft body; verifying stacking-sequence optimization; analyzing the whole structure of the shaft body; checking whether the conditions are met: the bolt stress is less than [sigama0] and the contact stress is less than Xt / 2; and storing a stacking-sequence combination and connection mode. The structure is in a cylindrical hollow shape and is formed by connecting metal flanges at the two ends and the hollow composite shaft body; the design method does not need a solid model, the analysis process is economic and fast, the degree of freedom and the flexibility are achieved, the design method is simple and is easy to operate, the development cycle of a product is shortened by more than 50%, the product cost is reduced by more than 20%, and the utilization ratio of the composite structure is improved by more than 80%.

The invention discloses an instrument for increasing male penis by massage exercise, which comprises a sliding part, a base frame and other parts, wherein the sliding part can slide on the base frame and form a hole similar to the section of the penis with the base frame; and the hole is reduced to band the penis. The male use the instrument to exercise and massage the penis and blood expands by pushing and extruding to expand a cavernous body of penis, thus the aims of lengthening and thickening the penis can be achieved. The instrument can be used for solving the problem that a male generative organ is short and small, enhancing the pleasant sensation of sexual life, improving erection and prolonging the time of the sexual life.

The invention provides a mounting structure for an automobile door lock, and belongs to the technical field of automobiles. The mounting structure solves the problems that a door handle and door lock pull wires of an automobile cannot be assembled easily and time and labor are consumed in the prior art. The mounting structure for the automobile door lock comprises door lock pull wires, a door handle, a fixed base and a door guard board which is mounted on an automobile body. The door guard board is provided with a mounting cavity, the door handle is located on one side of the door guard board and hinged to the door guard board, and the other side, facing the door guard board, of the mounting cavity is opened. The fixed base is arranged in the mounting cavity, and the fixed base is provided with sliding columns in a sliding mode. The door handle is fixedly connected with a shifting piece which can drive the sliding columns to slide on the fixed base when the door handle is pulled, and one end of each door lock pull wire is connected to the corresponding sliding column. The mounting structure for the automobile door lock has the advantage of being convenient and fast to mount.

The invention provides a face correction method in a video call process. The method includes steps: turning on a camera to acquire a video image in response to a video call; performing face detection on the acquired video image to obtain a multi-angle face image; performing three-dimensional modeling on the face based on the obtained multi-angle face image; adjusting a three-dimensional face model based on the position change of the face in the video to correct a three-dimensional face image; and transmitting the corrected three-dimensional face image. Besides, the invention also provides a face correction apparatus in the video call process. According to the method and the apparatus, eye contact between two calling parties can be realized in the video call process, and the design defect that the camera of equipment such as a cellphone and a laptop etc. is designed at the top of a screen is overcome.

Provided is a realization method of a photovoltaic unit. First, the type of a photovoltaic power station is distinguished; for a grid-connected photovoltaic power station or an off-grid photovoltaic power station of which a photovoltaic charging controller has a solar maximum power point tracking control function, the maximum limit value Ns of the number of photovoltaic components connected in series in a photovoltaic unit is calculated according to a formula (as shown in the description), and the value of the number of the photovoltaic components connected in series is Ns; for an off-grid photovoltaic power station of which a photovoltaic charging controller does not have a solar maximum power point tracking control function, the minimum limit value Nm of the number of photovoltaic components connected in series in a photovoltaic unit is calculated according to a formula (as shown in the description), and the value of the number of the photovoltaic components connected in series is Nm; the photovoltaic unit comprises photovoltaic components, a controller and a connecting circuit, the controller and the connecting circuit are connected to each other, and the connecting circuit and the photovoltaic components are connected to each other; and the controller can control series connection of the photovoltaic components according to the change of the environment through the connecting circuit. The method of the invention can avoid the design defects on the number of photovoltaic components connected in series and improve the power generation efficiency of the photovoltaic power station.

The invention provides a tobacco bale in-place supplementing alarm device. On the next station, that is a tobacco bale supplementing device, of a removing device, an optical fiber sensor is arranged on the outer wall of a rotating tower in a trepanning manner, a sensor mounting support is arranged beside a push rod station, that is, the station where a push rod pushes tobacco bales to a tobacco bale channel from the rotating tower, a rotating tower pulse detection sensor is arranged on the sensor mounting support, and detects the motion of the push rod, the rotating tower pulse detection sensor is connected with a PLC, when an approach switch is arranged beside the tobacco bale supplementing channel, the position of the tobacco bale supplementing device is recognized, the approach switch is connected with a PLC, when the tobacco bale supplementing device carries out supplementing on the tobacco bales in the rotating tower, the rotating tower is positioned through the sensors, the optical fiber sensor carries out recognizing on filling of the tobacco bales in the rotating tower, through treatment of the PLC, shutdown signals and alarm signals are output, the tobacco bales with defective quality are prevented from flowing in the next procedure, and a rotating tower mold box or the push rod is prevented from being damaged due to no-in-time shutdown; equipment running safety coefficients are improved.

The invention provides an excitation adjustment system and method for a nuclear power station generator. The adjustment system comprises an input / output module with two input / output plates, an excitation logic control module with three control signals including onsite input, excitation switch switching-on and excitation input, and a grid connection logic control module with signals indicating the state of a breaker at a generator outlet. A part of input signals in the input / output module are redundant arranged on the two input / output plates, and the logical operation relation of the excitation logic control module and the grid connection logic control module in the excitation adjustment system is changed. The excitation adjustment system and method overcome design defects of an excitation adjustment system in the prior art in multiple aspects, adjustment means is improved, the good operation state is guaranteed, and accordingly long-term safe and stable operation of a nuclear power station generator set is guaranteed.

The invention discloses a high-speed pantograph head with double contact strips. The high-speed pantograph head comprises an upper top pipe (1), sleeves (2), two pantograph horns (3) and two spring supports (4); two sets of spring pieces are symmetrically arranged at the two sides of each spring support (4), each set of spring pieces is composed of the upper spring piece (5) and the lower spring piece (6) in parallel, and the ends of the spring pieces in each set are connected with one contact strip support (7); every two contact strip supports (7) located at the same side of the upper top plate (1) are provided with one contact strip (8), and namely the two contact strips (8) are symmetrically arranged at the two sides of the upper top plate (1). Several sets of simple spring pieces installed symmetrically are used for replacing an original complex spring hanging system, the high-speed pantograph head has the advantages of being light and good in aerodynamics performance. The two contact strips are used, and lighter contact strips can be used, and the following performance of the pantograph can be greatly improved.

The invention provides a novel anti-rotation rolling wheel ascending and descending tappet, which comprises a tappet rod and a cam periodically acting on the tappet rod, wherein the tappet rod comprises a casing, a pin shaft and a rolling wheel arranged on the pin shaft, the casing is in a hollow cylinder shape, two coaxial pin holes are formed in the casing, the pin shaft is used for installing the rolling wheel on the casing through the pin holes, two mutually symmetrical platforms which are formed through milling are arranged on the outer circle surface arranged at one side, near the cam, of the casing, the platforms extend to the end surface of the casing, the pin holes are formed in the platforms, an anti-rotation clamp plate is arranged on the end surface part of the rolling wheel, in addition, the space between the top surface, near the cam, of the anti-rotation clamp plate and a center line of the pin shaft is greater than the outer diameter of the rolling wheel, and the anti-rotation clamp plate approaches to the cam but is not in contact with the cam. The invention provides the novel anti-rotation rolling wheel ascending and descending tappet with the advantages of simple structure, good anti-rotation effect and low processing cost.

The invention discloses a multi-color-selection and multi-base-material laser welding light-transmitting color master batch and a preparation method thereof. The multi-color-selection and multi-base-material laser welding light-transmitting color master batch is prepared from the following raw materials in parts by weight: 78-99.4% of carrier resin, 0.01-5% of solvent blue, 0.01-5% of solvent yellow, 0.01-5% of solvent red, 0.01-5% of solvent violet, 0.01-1% of a dispersant, and 0.01-1% of a processing stabilizer. According to the invention, various colors including black are adjusted on the premise that the laser transmittance is guaranteed through combination of the toner, the defect that a conventional laser welding light-transmitting master batch is limited to be black is overcome, the compatibility of a carrier and a dispersing agent of the color master batch with various base materials such as PC, ABS, PA and PBT is improved through a pretreatment process, the application range of the laser welding light-transmitting color master batch is widened, when a resin base material changes, the component proportion can be adjusted to eliminate the influence caused by the change of the base material, and the color stability is improved, which cannot be achieved by conventional single dye black, and the processing stabilizer improves the color stability of the laser welding light-transmitting color master batch under a high-temperature condition in the processing process.

The invention relates to a prestressed anchor bolt fan foundation reinforcement method. The prestressed anchor bolt fan foundation reinforcement method comprises the steps that for a prestressed anchor bolt fan foundation with design defects and quality problems, original foundation pier concrete is chiseled away, vertical reinforcements and radial reinforcements extending into a column pier partof an original foundation are reserved, and half of original prestressed anchor bolts are reserved at intervals; the reserved original prestressed anchor bolts are lengthened to form new lengthened anchor bolts; a plurality of circles of vertical embedded reinforcements are arranged on a cantilever plate part of the original foundation; and a new upper foundation reinforcement cage is placed on the reserved original foundation, upper foundation concrete is poured, and the reinforcement cage includes an upper foundation pier and a cantilever plate. The upper foundation is effectively anchored by the reserved vertical reinforcements, the radial reinforcements, the lengthened anchor bolts and embedded reinforcements. Meanwhile, the new prestressed anchor bolts are embedded in the upper foundation pier, a bottom tower barrel is connected with the reinforcement foundation through the lengthened anchors and the new prestressed anchor bolts, the rigidity of a joint is ensured by applying prestress through the lengthened anchor bolts and the new prestressed anchor bolts, and reinforcement of the prestressed anchor bolt fan foundation is realized.

The invention discloses a tread pattern pitch design method which comprises the following steps: inputting tire perimeter and pattern pitch information; calculating the length and number of each pitch based on an average energy distribution principle according to the input tire perimeter and pattern pitch information; generating a preliminary pitch arrangement mode according to the calculated length and number of each pitch; and evaluating the preliminary pitch arrangement mode based on the average energy distribution principle, and generating a final pitch arrangement mode by changing the pitch arrangement through an evolutionary algorithm. According to the method in the embodiment of the invention, the length and number of each pitch are calculated based on the average energy distribution principle according to the tire perimeter and pattern pitch information so as to generate the preliminary pitch arrangement mode, the preliminary pitch arrangement mode is evaluated, the final pitch arrangement mode is generated by changing the pitch arrangement through the evolutionary algorithm, the cost is low, the efficiency is high, and the tread pattern pitch can be scientifically designed. The invention also discloses a device for designing the tread pattern pitch.

The invention discloses a method and a device for improving cruising ability of an automatic navigation trolley. By control on working modes of an AGV (automatic guided vehicle) and reasonable arrangement of stops, and production requirements are met, working reliability and working efficiency of the AGV are improved. The device comprises a rectangular ground navigation magnetic strip used for determining traveling routes of the AGV, an automatic charging device used for marking off a plurality of stops according to a serial number starting from 0 on the rectangular ground navigation magnetic strip and mounting the AGV on the number 0 stop, a controller used for controlling the working modes of the AGV, a charging detection circuit used for detecting charging states of the AGV, a forced starting key used for forced starting of the AGV, and a hoisting completion key used for informing the controller when hoisting of an engine power assembly is completed, and the controller is connected with the charging detection circuit, the forced starting key and the hoisting completion key respectively.

The invention relates to a thermal power plant ETS system shutdown button design method. The method comprises the steps that a shutdown button A and a shutdown button B are divided into three normallyopen nodes to enter an ETS system, three independent cables are independently laid and connected into three I / O clamping pieces of the ETS system respectively, whole-course independent design of protection signals is achieved, and two-out-of-three post-phase and output are conducted in the ETS system respectively. When any contact or signal of the shutdown button A and the shutdown button B breaks down, a two-out-of-three algorithm is executed through logical operation, so that protection signals are normally output, and the protection refusal condition is avoided. The shutdown buttons A andB are independent of the ETS system, and an electromagnetic valve is directly driven to act through a hard loop. The reliability of shutdown button A / B protection can be effectively improved, and protection maloperation and refusal are avoided.

The invention discloses an electronic device. The electronic device is used for overcoming design defects of the existing electronic devices. The electronic device comprises a body and a support assembly, wherein the support assembly comprises a shell, a rotating member, a transmission member and a telescopic member, the rotating member, the transmission member and the telescopic member are arranged in the shell, the rotating member is connected with the telescopic member through the transmission member, and the support assembly is connected to a first face of the body through the rotating member; when the rotating member rotates towards a first direction, the rotating member can drive the transmission member to move and then drive the telescopic member to stretch, so that the telescopic member extends out of the external surface of the shell.

The invention discloses an instrument for massaging, exercising and enlarging a male penis. The instrument is composed of a sliding part, a base frame and other parts, wherein the sliding part can slide on the base frame and constitutes a hole similar to the cross section of the penis together with the base frame, and the hole can be reduced to tightly hoop the penis. The instrument further comprises a heater for heating the penis, wherein the heater is internally provided with a material generating far infrared rays which cover the surface of the penis to improve the blood circulation of the penis. The male can exercise and massage the penis by using the instrument and achieve the purpose of lengthening and thickening the penis by enlarging a corpus cavernosum through pushing-based blood expansion. The instrument can be used to solve the problem of short reproductive organ of the male, enhance the pleasure in a sexual life, improve erection and prolong the time of the sexual life.

The invention discloses a double-loop secondary expansion jack and an application method, and is suitable for underground coal mines. The double-loop secondary expansion jack comprises an upper piston jack and a lower piston jack; a fastening expansion device is arranged between the upper piston jack and the lower piston jack; hydraulic oil is fed in an ejector expansion liquid inlet cavity to realize primary expansion and hydraulic locking; hydraulic pressure is injected in a jacking anchorage pipe expansion liquid inlet cavity to realize secondary expansion and hydraulic locking; after expansion is finished, hydraulic oil is released in a jacking anchorage rod de-anchoring liquid return cavity to realize jacking anchorage pipe de-anchoring; the hydraulic oil is controlled to feed in a jacking press de-anchoring liquid return cavity to realize jacking press de-anchoring so as to finish whole expansion process; and an expansion liquid feeding hydraulic loop and a de-anchoring liquid return hydraulic loop are separately arranged on two sides of the jack. The double-loop secondary expansion jack is simple in structure and excellent in matching property with an anchor rope lock, improves effective prestress of a lock and a lock ring on a tray, improves the locking firmness degree of a lock cylinder of the lock, further improves the roof support quality, and guarantees the roof safety in construction.

The invention relates to the technical field of human factor fault prevention of power plants, and particularly discloses a human factor fault prevention isolation operation system and method for a power plant, and the method comprises the following steps: (1) preparing isolation operation; (2) carrying out isolation operation; and (3) finishing the inspection and acceptance of the isolation operation. Technical prevention means for preventing human errors can be provided for on-site isolation operation, the probability of accidents caused by the human errors is reduced, meanwhile, monitoringof the management layer on on-site personnel behaviors is enhanced, and human resource management is enhanced.

The invention discloses a windproof and horizontal displacement resistant steel column joint of a staggered telescopic joint type curtain wall and a processing method thereof. The windproof and horizontal displacement resistant steel column joint of the staggered telescopic joint type curtain wall comprises a teflon board, limiting steel plates, a tension resisting steel plate, a windproof column and a quadrate pipe; the telfon board is arranged at the upper part of a horizontal square pipe on a roof; the limiting steel plates are arranged at two ends of the teflon board; the tension resisting steel plate is welded at the upper part of the teflon board; the windproof column is arranged in a telescopic joint staggering area of the curtain wall; the quadrate pipe is horizontally arranged between two joints. According to the windproof and horizontal displacement resistant steel column joint of the staggered telescopic joint type curtain wall, teflon plate through which joints can slide is arranged at the upper part of the horizontal quadrate pipe on the roof, and therefore, the structural deformation of different layers can be removed, and thus the curtain wall system can be prevented from being broken due to non-uniform deformation can be effectively prevented; the joints connected between the windproof column and a roof steel structure are connected through rigid connecting rods; meanwhile, the quadrate pipe is horizontally arranged between the two joints, so that the displacement can be synchronously performed, and as a result, non-uniform deformation can be effectively prevented.

The invention discloses a multifunctional valve assembly structure. A diaphragm cover, a diaphragm and a diaphragm protection support are matched to form a pressure balance cavity, so that the pressure in the direction of a gas inlet or a liquid inlet is kept balanced with the pressure balance cavity, and a valve is in a closed state; a pressure relief flow guide hole is formed in the diaphragm cover and communicates with a liquid inlet or a gas inlet of a pressure relief control assembly, so that the pressure relief control assembly releases the pressure of the pressure balance cavity betweenthe diaphragm cover and the diaphragm through a pressure relief switch of the pressure relief control assembly; due to the fact that the pressure in the direction of the gas inlet or the liquid inletis larger than the pressure of the pressure balance cavity, the diaphragm is pushed away towards the diaphragm cover, and the effect of opening the valve is achieved; the top of the diaphragm protection support supports the telescopic surface of the diaphragm, the diaphragm cannot be deformed and damaged due to pressure extrusion of the pressure balance cavity, and the service life of the diaphragm is greatly prolonged; and a non-return device is additionally arranged in a pilot assembly of the diaphragm, so that the problem of siphon backflow is solved.

The invention relates to a ventricle assisting device capable of enhancing cardiac functions. The ventricle assisting device comprises at least two magnetic devices attracting each other. Each magnetic device comprises a self-cured or self-gelatinized material and multiple magnetic elements mixed in the self-cured or self-gelatinized material. The magnetic devices can be injected through an injection system, and in the injection process, the self-cured or self-gelatinized materials are fluid. The thickness of the heart wall can be remarkably increased, the volume of cavities in the heart can be reduced, the cardiac functions can be enhanced, the magnetic force can be adjusted and micro-regulated in proper time in time, the magnetic field direction of the device can be actively and spontaneously adjusted to be optimal, it is guaranteed that the device can achieve the effect of assisting in systole, and meanwhile minimally-invasive implantation can be achieved through a minimally-invasive interventional operation. The ventricle assisting device is simple and practical in overall design, good in fit adaptability to heart tissue, wide in application range, safe and effective.

A portable handheld cotton picker is disclosed, wherein an open cotton-picking opening is disposed at the front end of a shell, and the bottom of the front end of the shell is opened to compose a cotton-falling opening. The portable handheld cotton picker is characterized in that a groove is disposed on the circumferential outer edge of a driven convey belt wheel of a picking device disposed at the cotton-picking opening at the front end of the shell; strong magnets equally distributed on a circumference are disposed in the groove; a drive cotton-picking convey belt wheel is disposed on the middle part of the shell and installed with a cotton-picking convey belt bulged transmission wheel disposed between a front wheel and a rear wheel and protruding the axes of the two wheels in a triangular layout; a cotton-picking convey belt is coaxially covered on the outer edge ends of the driven cotton-picking convey belt wheel, the convey belt bulged transmission wheel and the drive cotton-picking convey belt wheel in a surrounding way; cotton-picking hook teeth and cotton-unloading devices are uniformly distributed on the outer edge part of the cotton-picking convey belt; and strong magnet pieces are disposed on the middle part of a cotton-unloading spring piece as well as realize closure and separation with the strong magnets equally distributed in the groove of the driven cotton-picking convey belt wheel via the rotating operation of the driven cotton-picking convey belt wheel. The portable handheld cotton picker disclosed by the invention is simple in structure and scientific in design; and the cotton-picking hook teeth in a cotton-picking chamber and the cotton-unloading devices are automatically combined and separated.

The invention relates to the technical field of image enhancement and computer vision, in particular to an image defogging method integrating image restoration and image enhancement and a convolutional network of the image defogging method. According to the method, three different convolutional neural networks are utilized to perform fusion defogging, and the method simulates the mapping from an original foggy image to a fogless image to realize defogging. According to the invention, the defogging capability of the enhanced network learning non-physical model is improved by combining the defogging graph of the restored network in the loss calculation of the enhanced network; the gating fusion network calculates self-adaptive weight graphs of the two defogging graphs of the restoration network and the enhancement network, and the weight graphs can play a role in fusing good parts of the restoration network and the enhancement network and improving defogging performance. According to themethod, the design defects existing in a physical model and an end-to-end convolutional neural defogging network at present are mainly overcome, a defogging graph is optimized, the application rangeof a defogging algorithm is expanded, and the robustness of the defogging algorithm is enhanced.

The invention relates to a large photobioreactor floating in a wide water area. The large photobioreactor is used for culturing microalgae in the wide water areas, such as oceans / lakes and the like, and comprises a carrying floating platform floating on the water surface and a microalgae culture device suspended below the carrying floating platform, and the microalgae culture device is immersed in water; the microalgae culture device is an incubator with an open top surface and closed films at the periphery and the bottom, and microalgae cells are inoculated and cultured in the incubator; an artificial light source and a nutrition supply device are arranged in the incubator; and a storage tank for providing nutrition for the nutrition supply device is arranged on the carrying floating platform. The photobioreactor disclosed by the invention does not occupy land area, is large in culture volume, low in cost, low in energy consumption and high in light energy utilization rate, and opens up a new research and development direction of a water floating photobioreactor.

The invention relates to a ventricle assisting device implanted through interventional micro-injury operation. The ventricle assisting device comprises a plurality of magnetic components, wherein themagnetic components are mutually attracted; at least a part of each magnetic component is positioned inside a heart wall; the magnetic components comprise magnetic elements and containing elements which can be compressed into a conveying system; the magnetic elements can be injected into the containing elements; and the containing elements are detachably connected with the conveying system. The magnetism of the ventricle assisting device can be adjusted and finely tuned, an optimal magnetic field direction can be adjusted automatically and actively, and the ventricle assisting device has an overall and effective function of assisting systole, in addition is convenient in micro-injury implanting through interventional micro-injury operation, and is simple and practical in overall design, good in gluing adaptability to heart tissue, good in long-term fixation effect, wide in application range and safe and effective.

Provided is a bicycle. A rear wheel is connected with a right gear 1, a right gear 2 is connected to a bicycle body support and connected with a right operating crank, the right operating crank is connected with a right pull rod, the right pull rod is connected to a right stepping crank, and the right stepping crank is connected with a right pedal; a user downward steps on the right pedal to drivethe right gear 2 to rotate through the right stepping crank, the right pull rod and the right operating crank, and the right gear 2 drives the right gear 1 to make the rear wheel rotate; the right wheel is connected with a left gear 1, a left gear 2 is connected to the bicycle body support and connected with a left operating crank, the left operating crank is connected with a left pull rod, the left pull rod is connected to a left stepping crank, and the left stepping crank is connected with a left pedal; the user downward steps on the left pedal to make the left gear 2 rotate through the left stepping crank, the left pull rod and the left operating crank, and the left gear 2 drives the left gear 1 to make the rear wheel rotate. Through the transmission, speed change and direction changeof the left gears and the right gears, by means of the cranks and the pull rods, by downward stepping the pedals, the rear wheel has a running function; by means of a lever force-saving principle, labor saving and rapid riding are realized.

The invention discloses an instrument for massaging, exercising and enlarging the male penis. The instrument is composed of a sliding part, a base frame and other parts, wherein the sliding part can slide on the base frame and constitutes a hole similar to the cross section of the penis together with the base frame, and the penis can be hooped tightly when the hole is narrowed. The instrument further comprises a heater for heating the penis, wherein the heater is internally provided with a material for producing far infrared rays which cover the surface of the penis so as to improve the blood circulation of the penis. The male can achieve the purpose of lengthening and thickening the penis by exercising and massaging the penis by using the instrument and enlarging the cavernous body of the penis by pushing and extruding blood for expansion. The instrument disclosed by the invention can be used to solve the problem of short and small reproductive organ of the male, enhance the pleasure in the sexual life, improve erection and prolong the time of the sexual life.

The invention relates to the field of engine design analysis, in particular to a diesel engine cylinder cover design analysis method based on a CAE simulation technology. The method comprises the steps: 1, based on a three-dimensional model of the diesel engine cylinder cover, conducting high-cycle fatigue finite element fatigue strength calculation on the diesel engine cylinder cover; 2, analyzing the calculation result of the fatigue strength of the high-cycle fatigue finite element, and verifying whether the design scheme of the diesel engine cylinder cover is feasible or not; 3, performinglow-cycle fatigue finite element fatigue strength calculation on the diesel engine cylinder cover based on the three-dimensional model of the diesel engine cylinder cover; 4, analyzing the calculation result of the fatigue strength of the low-cycle fatigue finite element, and verifying whether the design scheme of the diesel engine cylinder cover is feasible or not. According to the method, design defects are effectively avoided, development risks are fully estimated, the analysis and verification efficiency and accuracy are improved, the development period is shortened, the development costis reduced, rack tail gas emission is avoided, the core technology of cylinder cover design is mastered, and forward development is achieved; and the method has relatively high reliability, portability and operability.