37results about How to "Stable return" patented technology

A pad retainer of a vehicle disc brake includes: a pair of retainer portions mounted in pad guide grooves; a connecting piece connecting the pair of retainer portions together; and pad returning portions configured to bias the friction pads to a side opposite to the disc rotor. Each of the pad returning portions includes an elastic loop portion formed into an arc shape by bending a narrow elongated piece, which extends in a direction opposite to the disc rotor from an inner side in a disc radial direction of a deep side piece of the retainer portion, and then back towards the disc rotor; and a holding portion extending from a bent-back end of the elastic loop portion towards the disc rotor and configured to hold a lug piece of the friction pad.

The invention discloses a method for detecting copy number variation of tumor single-cell genomes. The method comprises the steps of separately performing genome sequencing on tumor single cells and aplurality of normal tissue single cells, performing comparing with a reference genome, and dividing window and standard window data; and using a normal single-cell comparison as a standard for removing systematic deviation to obtain genome copy number in all tumor single-cell regions. The method disclosed by the invention eliminates some specific system deviation introduced by different single-cell amplifying techniques, so that the accuracy of copy number variation detection of the tumor single-cell genomes can be improved, and the method has important significance in detecting driving incidents relevant with copy number variation and reading tumor genome evolution information.

The invention discloses a small target detection algorithm based on improved YOLOv5, and the method comprises the steps: 1, carrying out the enhancement of a collected to-be-detected face mask data set through Mosaic-8 data, i.e., carrying out the random cutting, random arrangement and random zooming of eight pictures, combining the eight pictures into one picture, and reasonably introducing some random noises; and a second step of adding a new-scale feature extraction layer in the YOLOv5 feature fusion network, adjusting a target frame regression formula of the YOLOv5 network, and improving a loss function. And step 3, sending the enhanced data into the network for iterative training, and adjusting the learning rate by using a cosine annealing algorithm. And step 4, after training is completed, sending a to-be-detected picture into the optimal model obtained after training, detecting the category and the position of a target, and finally obtaining a recognition result. The improved algorithm is applied to protective mask wearing detection in a dense crowd scene, and an experiment result shows that compared with an original YOLOv5 algorithm, the algorithm has higher feature extraction capability and higher detection precision in small target detection.

The invention discloses an electric multifunctional standing hospital bed. The hospital bed comprises a bed board, a supporting frame, a lifting support, an inclined support and a bottom support. Thebed board comprises a side turning structure, a thigh board, a shank board, a back board and a fixing board. The back board, the fixing board, the thigh board and the shank board are sequentially arranged at the upper end of the side turning structure. The invention provides an electric multifunctional standing hospital bed, which integrates the functions of overall bed body lifting, head-fallingsupination, backrest lifting, leg lifting, left-right turning and 75-degree standing, can improve the effects of rescuing, treating and nursing patients by medical personnel and can improve the use comfort of a patient. The hospital bed integrates more functions, and the utilization rate of the hospital bed is increased. A temporary power supply is arranged in the hospital bed, power can be supplied under the emergency condition of external power supply obstacles, rescue and nursing of a patient are ensured, the life saving efficiency under the emergency condition is improved, and the application range of the hospital bed is widened.

A pad retainer of a vehicle disc brake includes: a pair of retainer portions mounted in pad guide grooves; a connecting piece connecting the pair of retainer portions together; and pad returning portions configured to bias the friction pads to a side opposite to the disc rotor. Each of the pad returning portions includes an elastic loop portion formed into an arc shape by bending a narrow elongated piece, which extends in a direction opposite to the disc rotor from an inner side in a disc radial direction of a deep side piece of the retainer portion, and then back towards the disc rotor; and a holding portion extending from a bent-back end of the elastic loop portion towards the disc rotor and configured to hold a lug piece of the friction pad.

The invention discloses a remote sensing image target detection method based on a smooth frame regression function, and the method comprises the steps: carrying out the necessary preprocessing of a training image, and setting the hyper-parameters of network training; inputting the picture into a target detection convolutional neural network to obtain a feature map; inputting the feature map into aregion suggestion network to obtain a candidate box; sending the candidate boxes and the feature map into a region-of-interest pooling layer to obtain region-of-interest features, and classifying theregion-of-interest features in a classifier; sending the obtained features of the region of interest into a full connection layer to obtain predicted offset, sending the predicted offset into a smooth frame regression function to obtain actual offset, and correcting a candidate frame to a new position; repeating the steps until the training process is finished; and preprocessing the to-be-detected image and then inputting the preprocessed to-be-detected image into the trained network to obtain a target detection result. High-precision frame regression can be effectively realized, and higher-precision target detection can be realized under the condition of a high IOU threshold.

The invention discloses a multi-rotor unmanned aerial vehicle, which comprises a center plate, a foot stand, jib arms, motor bases, motors, screw propellers and an antenna. The foot stand is arranged under the center plate; the antenna is arranged above the center plate; one ends of the jib arms are connected with the center plate through joint parts; the other ends of the jib arms are connected with the motor bases; the motors are arranged on the motor bases; the screw propellers are arranged on the motors; a suspension frame is also arranged on the bottom part of the center plate; two parallel mounting rods are arranged on the suspension frame; and a camera mechanism, a nacelle mechanism and a loudspeaker are sequentially mounted on the mounting rods. The multi-rotor unmanned aerial vehicle provided by the invention applies a low-altitude flight platform of a small unmanned aerial vehicle, and is simple in structure, convenient to operate and control, and excellent in using effect, and the application field of the small unmanned aerial vehicle is widened.

The invention discloses a brake assembly of a tractor. The brake assembly of the tractor comprises a bottom plate, a brake cylinder, a left brake shoe, a right brake shoe, a brake drum, a left friction plate, a right friction plate, a gap adjustor assembly and a parking brake assembly, wherein the bottom plate is mounted in the middle of the brake drum; the brake cylinder, the left brake shoe and the right brake shoe are mounted on the bottom plate; the left brake shoe and the right brake shoe are respectively arranged at the left side and the right side of the brake cylinder; the brake cylinder is mounted between the upper end of the left brake shoe and the upper end of the right brake shoe; the gap adjustor assembly is mounted between the lower end of the left brake shoe and the lower end of the right brake shoe; the left friction plate is positioned between the left brake shoe and the brake shoe; the right friction plate is arranged between the right brake shoe and the brake drum; the parking brake assembly is mounted on the bottom plate and is connected with the left brake shoe and the right brake shoe. The brake assembly of the tractor has the beneficial effects that the automatic gap adjusting is flexible and reliable; hand pulling force on a handle can be reduced; the stability and comfort of the whole vehicle during braking can be improved.

The invention discloses a safety device for preventing an accelerator from being mistaken as a brake. The safety device comprises an accelerator device and a brake device, the accelerator device comprises an accelerator pedal, a pedal supporting rod connected with the accelerator pedal and an accelerator accelerating device in linkage with the pedal supporting rod to control accelerating of a vehicle, and a resilience piece connected with the pedal supporting rod and capable of controlling the accelerator accelerating device to be in one-way press-down movement is arranged on the pedal supporting rod; an auxiliary braking mechanism capable of being in contact connection with one end of the pedal supporting rod to control the brake device to form a brake system is arranged on the brake device, and a gap for buffering speed of the vehicle is arranged between the end of the auxiliary brake mechanism and the end of the pedal supporting rod. The safety device is compact in structure, and the objective of emergent braking is achieved by adopting a pure mechanical touch mode, so that normal accelerating of the vehicle can be ensured, and the problem of safety accidents caused by sudden accelerating of the vehicle when the accelerator is mistaken as the brake can be avoided.

The invention belongs to a detecting device for a piezoelectric actuator for an electric-control high-pressure common-rail oil injector, in particular to a test device for performance and reliability of a piezoelectric actuator. The test device comprises a base, wherein the left end part of the base is equipped with a fixed base; a fixed bolt is rotatably arranged on the fixed base; a transition block and a supporting body are arranged on the base; the left end of the transition block is limited and fixed through the fixed bolt; a pushing body is arranged at the right end of the supporting body; a clamp body is arranged at the right end of the pushing body; the piezoelectric actuator is mounted on the transition block and the supporting body; the right end of the piezoelectric actuator is connected to the left end surface of the pushing body; a displacement transmission rod is arranged on the top of the pushing body; the displacement transmission rod is in contact with a measuring head of a micrometer gauge; the right side of the pushing body is connected with an acting piston; the acting piston is positioned in the clamp body; a pressure meter is mounted on the top of the clamp body; and an oil port of the pressure meter is connected with a hydraulic oil middle cavity of the clamp body. The test device can be used for testing relatively great pre-tightening force and output displacement, and can ensure accuracy of a reliability rest.

The invention discloses a Logo detection method and system based on deep learning. The Logo detection method comprises steps of a Logo detection model being constructed based on improved up-sampling operation and a loss function; predicting an up-sampling kernel according to the input feature map, and recombining the target features according to the predicted up-sampling kernel to obtain recombined features; and training a Logo detection model based on the recombination features, and detecting the Logo image to be detected by using the trained Logo detection model. Based on a deep learning detection model and in combination with a new up-sampling operation and a loss function, a large receptive field can be provided during feature recombination, a recombination process is guided accordingto input features, the whole process is light in weight, good balance is achieved in speed and precision, and problems of divergence and the like in the training process are avoided; and the regression process becomes more stable.

The invention belongs to the technical field of sighting telescopes and particularly relates to an electronic sighting device capable of achieving long-distance and high-accuracy ranging. The electronic sighting device comprises a field-of-view acquisition unit, a display unit, a sighting circuit unit and a laser ranging unit, wherein the field-of-view acquisition unit acquires image information of the inside of a shooting field of view; the display unit displays divisions and the image information acquired by the field-of-view acquisition unit; the sighting circuit unit is used for transmitting the image information of the field-of-view acquisition unit to the display unit and performing accurate prediction on sighting; the laser ranging unit adopts wave-length laser with high penetrating power as a laser source to perform ranging on a target object and adds two-dimension coordinate data to a feedback laser signal so as to achieve long-distance and high-accuracy ranging.

The invention provides an automatic return guide positioning mechanism. The automatic return guide positioning mechanism comprises a base, an installation frame, a material guide plate and a reset mechanism which is arranged on the base and used for driving the installation frame to be reset. The material guide plate is fixed to the installation frame through adjustable installation assemblies and provided with a material blocking surface in the vertical direction. A guide part is arranged in the position, in the material feeding direction, of one end of the material blocking surface. The installation frame is provided with a guide rod which is arranged vertically, and the lower end of the guide rod penetrates through the base and is in slide fit with the base. According to the automatic return guide positioning mechanism, the structural design is reasonable; the guide part is capable of playing a very good guide function and guiding a workpiece into a preset position, then the workpiece is reliably positioned through the material blocking surface of the material guide plate, and the whole positioning process is stable and reliable. A buffer pressure pad is arranged between a spring and the bottom of a sleeve, pressure is applied to the bottom of the sleeve through the buffer pressure pad, and load distribution is uniform; and meanwhile, impact of the spring on the bottom of the sleeve can be reduced, so that the sleeve pushing downwards process and the sleeve return process are more stable.

The invention relates to the field of sewage treatment methods and particularly discloses a method for quickly treating sewage. The method adopts a sewage treatment device, and a filtering layer in the device can preliminarily filter out solid impurities in sewage; and in the filtering process, when the filtering layer reaches the filtering limit, a rotating mechanism in the device can drive the filtering layer to be moved to the position of a sewage bucket, and then, the filtering layer is washed to enable the solid impurities adhering to the surface of the filtering layer to be cleared, thereby greatly increasing the utilization ratio of the filtering layer.

The invention discloses an electronic type accelerator pedal of an automobile. The electronic type accelerator pedal comprises a pedal arm, a shell, a return spring group and a rotating shaft, wherein the return spring group and the rotating shaft are installed in the shell; the pedal arm comprises a long arm part stretching out of the shell and a short arm part arranged in the shell; the return spring group is formed by sheathing two cylindrical helical springs; a sliding block is arranged between the end part far away from the rotating shaft, of the short arm part and the inner wall of the shell; the sliding block is slidably connected with the inner wall of the shell; and the sliding block is clamped with the short arm part of the pedal arm; and further, a foam isolation pad is installed between the two cylindrical helical springs, thereby preventing the two springs from mutually colliding in the movement process. The electronic type accelerator pedal provided by the invention can be smoothly and successfully reset, thus the operation comfortable sensation of driving personnel is enhanced.

The invention discloses a high-throughput slide storage device adaptive to various dyeing supports, and belongs to the technical field of glass sheet storage. The high-throughput slide storage device comprises a storage device box, a storage device box handle, a bead shifting screw, the dyeing supports and sample slides, the storage device box handle is arranged on the side wall of the storage device box, the bead shifting screw is arranged in the storage device box, the dyeing supports are arranged in the storage device box in a clamped mode, and the sample slides are arranged on the dyeing supports in a clamped mode. The high-throughput slide storage device adaptive to the various dyeing supports is simple and convenient to mount and take out, the dyeing supports can be taken out at a time to replace the sample slides, direct and stable grabbing and returning of a machine are facilitated, and the working efficiency and stability are improved.

The invention discloses a laser radar system based on a wireless communication network and a working method thereof. The laser radar system comprises an unmanned aerial vehicle, and optical assemblies, a laser emitter, a signal receiver and a data transmission assembly which are arranged on the unmanned aerial vehicle, wherein the optical assembly is located at the excitation end of the laser emitter and the receiving end of the signal receiver, the optical assembly comprises a spectroscope, a reflector and a displacement piece, and the displacement piece drives the spectroscope and the reflector to rotate so as to emit laser emitted by the laser emitter to a target object and emit a returned optical signal to the signal receiver. And the data transmission assembly transmits the optical signals received by the signal receiver to a central server through a wireless communication network. The technical problem that in the prior art, the signal receiving position is fixed, and consequently the returned light signal receiving capacity is poor is solved, and the technical problem that in the prior art, laser radar data cannot be transmitted and monitored in real time is solved.

The invention discloses a fire-fighting and fire-extinguishing device based on an unmanned aerial vehicle, which belongs to the technical field of fire-fighting and fire-extinguishing. The invention includes a frame, a flight lifting mechanism, a fire extinguishing bomb fixing mechanism and a fire extinguishing bomb releasing mechanism; the frame includes a machine arm, a fixed frame and a tripod; The motor of the flight lifting mechanism controls the propeller to rotate at different speeds, and the periphery of the propeller is provided with a protective cover; the hoop of the fire extinguishing bomb fixing mechanism is connected with the fixing frame to jointly fix the fire extinguishing bomb; the first pin of the fire extinguishing bomb release mechanism is inserted into the fire extinguishing bomb At the mouth of the bottle, the electromagnet unit controls the pulling out of the first pin to realize the release of the fire extinguishing bomb. The present invention can not only play a very good monitoring role in the fire fighting of complex fire places such as urban high-rise buildings and forests, accurately locate the fire scene information at low cost and high efficiency, and at the same time achieve the purpose of rapid fire extinguishing, and can flexibly obtain trapped personnel information, It is convenient for popularization and application.

A dung collecting box sliding mechanism of a dung cleaning vehicle in a cattle farm is composed of a rack, an elevator, a dung collecting box, a rear limiting block, a swing arm, a front limiting block, a lifting oil cylinder, a lower sliding block and an upper sliding block. The lifting oil cylinder is located in the middle of the front end of the excrement collecting box, the upper end of the lifting oil cylinder is hinged to the excrement collecting box, the lower end of the lifting oil cylinder is hinged to the machine frame, every two upper sliding blocks and every two lower sliding blocks form a group, the upper sliding blocks and the lower sliding blocks are welded to the front ends of the excrement collecting box and the machine frame in a staggered mode, and the two swing arms are symmetrically located on the rear portion of the excrement collecting box. The upper ends of the swing arms are hinged to the excrement collecting box, the lower ends of the swing arms are hinged to the two front limiting stoppers, the two front limiting stoppers are welded to the rack, and the two rear limiting stoppers are located at the rear ends of the swing arms, correspond to the swing arms respectively and are welded to the rack at a certain distance from the swing arms. During work, the lifting oil cylinder, the swing arm, the upper sliding block, the lower sliding block, the front limiting stopper and the rear limiting stopper work together, the excrement collecting box slides downwards and backwards, the front end of the excrement collecting box is lifted, and excrement is dumped.

The invention provides trolley detection and maintenance equipment and effectively solves the problem that when the existing trolley detection and maintenance equipment is used, worker might forget tomark a problem vehicle, thus electric wires need to be arranged and the workshop is greatly changed. By using the trolley detection and maintenance equipment, modifications can be directly performedon wire bodies and wiring is not needed, which has slight impacts on the production line per se and the overall layout of the workshop, and a mechanical mechanism is adopted during the alarm process,so that the reliability is high, a screw self-locking mechanism is adopted, so that the state is stable when the alarm device is driven, a unidirectional load of a gear drives the alarm device, so that when the gear is returned more smoothly under the action of a compression spring due to no load, two lifting blocks arranged at an interval are adopted, so that shifting levers can smoothly pass thespace between the two lifting blocks, the two lifting blocks cooperate with a base plate which is arranged in a way of sliding up and down, so that the base plate can smoothly pass a baffle plate after the driving alarm, and the normal operation of wire bodies is not affected.

The invention discloses a composite soil material and application of the composite soil material in preparation of greening planting soil from river and lake dredging mud. The composite soil materialcomprises the following components in parts by weight: main agents: 1-3 parts of cationic polyacrylamide, 4-6 parts of polyferric chloride, 20-40 parts of Portland cement, and 25-45 parts of modifiedfly ash and straw; and auxiliaries: 1-2 parts of calcium formate, 2-4 parts of polyglutamic acid and 2-3 parts of activated humic acid. The functions of dehydration reduction, heavy metal stabilization, strength improvement, soil structure and nutrient improvement and the like are integrated for the first time, and repeated technological operation during single implementation of traditional functions or functional compounding is avoided; and the final way-out problem of dredging mud treatment is solved in a resource utilization form of greening planting soil products, the use requirements of planting greening soil in surrounding areas are supplemented, the goal of returning non-point source pollution collected by river and lake dredging mud to soil in a stable form is achieved, and the invention has operable good application prospects.

The invention provides a material return system, which includes: a cyclone separator, a material leg, a conveying pipe, a casing, a wing plate and a driving mechanism; wherein, the solid outlet of the cyclone separator is connected to the first end of the material leg ; The top of the casing is provided with a solid inlet, the second end of the material leg is penetrated through the solid inlet and placed in the casing, the wing plate is arranged in the casing and is movably covered on the end of the second end of the material leg, and the driving The mechanism is arranged on the casing and connected with the flap, and the driving mechanism is used to drive the flap to move to block or open the end of the second end of the dipleg; the bottom of the casing is provided with a solid outlet, and the solid outlet is used for connecting with the delivery pipe through the delivery pipe. connected to the gasifier. In the present invention, the driving mechanism drives the flap to move to block or open the second end of the material leg, which facilitates the control of the semi-coke transportation in the material leg and the temperature rise of the material leg, improves the control of the control strength and the ability to return materials, and ensures The feeding system can stably feed back into the gasifier.

The invention discloses a multi-rotor unmanned aerial vehicle (UAV) for searching and rescuing at night, and belongs to the technical field of searching of unmanned aerial vehicles. The multi-rotor unmanned aerial vehicle is characterized in that six arms extend from a rack along an UAV body; a foot stand is arranged at the lower part of the UAV body; a searching and rescuing machine hanging rod is loaded at the bottom part of the UAV body; a flying lifting mechanism is arranged at the tail ends of the arms; propellers are movably connected with a motor through a quick-dismounting part; a searchlight mechanism comprises a wide-angle searchlights which is hung to the arms, and a projector searchlight which is hung to the tail end of a searchlight hanging rod; a loudspeaker, a shooting mechanism and a thermal imaging mechanism of a searching and rescuing mechanism are hung to the bottom part of the UAV body through the searching and rescuing mechanism hanging rod. According to the multi-rotor UAV, the searching and rescuing device can be quickly mounted on the multi-rotor UAV and provides visual light covering about 7,000 square meters to support people searching and rescuing at ground; meanwhile, large light beam is provided for a key area to assist searching at ground; the multi-rotor UAV is applicable to searching and rescuing, patrolling, handling of group affairs and anti-terrorism surveillance in mountain regions, forest, grassland, water and bog regions.

The invention relates to the field of water treatment and in particular discloses a sewage treatment device. A rotating mechanism is arranged in the device, wherein a filter unit is arranged in the rotating mechanism; a filter layer in the filter unit is capable of fully filtering solid impurities in sewage; and by rotating a mounting ring, the filter layer in the mounting hole can be rapidly cleaned, and repeated use of the filter layer is realized; and meanwhile, the collection bucket is divided into a sewage bucket and a filter bucket, so that the filtered water and sewage for cleaning thefilter layer can be conveniently collected respectively. According to the scheme, the utilization rate of the filter layer is improved.

The invention discloses a feeding device making materials not prone to scattering and used for biomass power generation. The feeding device comprises an installing base. Supporting legs are fixedly connected to four right angles of the bottom of the installing base correspondingly. First fixing blocks are fixedly connected to the front side and the rear side of the upper surface of the installingbase correspondingly. Second fixing blocks are fixedly connected to the portions, located on the right sides of the first fixing blocks, of the front side and the rear side of the upper surface of theinstalling base correspondingly. The opposite sides of the two first fixing blocks and the opposite sides of the second fixing blocks are connected through a first rotating rod and a second rotatingrod correspondingly. The first rotating rod and the second rotating rod are sleeved with a main belt wheel and an auxiliary belt wheel correspondingly. According to the feeding device making the materials not prone to scattering and used for biomass power generation, by improving a conveying belt, a driving wheel and the belt drive a driven wheel to rotate, thus the first rotating rod can rotate,in cooperation with use of the main belt wheel and the auxiliary belt wheel, the conveying belt can drive the materials to rotate smoothly through the main belt wheel and the auxiliary belt wheel, andby means of cooperation use of stop sheets of the main belt wheel and the auxiliary belt wheel, scattering of the materials can be avoided.