94results about How to "Solve the impact" patented technology

The invention provides a large-model-assisted dynamic configuration and quick response method for a knitting production line, and the method comprises the steps: obtaining the historical data of the knitting production line according to the dye molecular weight, the dye polar group number and the dye molecular space structure as dye property parameters, and constructing a dye property data warehouse; according to historical data of a knitting production line, dye molecular structure parameters, yarn surface morphology, material characteristics and friction coefficient test data are selected, and a correlation prediction model of dye properties and yarn friction coefficients is constructed; according to dye properties and friction coefficient distribution characteristics, performing clustering grouping on dye formula compositions, determining dye combinations having similar influence on yarn friction coefficients, and forming a dye formula and friction coefficient mapping library; knitting mechanical structure parameters, a knitting needle motion trail equation, a fabric organization structure matrix and fabric density parameters are obtained and combined with a dye formula and friction coefficient mapping library, and a weaving process digital twinning model is constructed.

The invention discloses a large indoor direct shear tester for geotechnical engineering, and relates to the technical field of geotechnical shear tests.The large indoor direct shear tester for geotechnical engineering comprises a sample container system, a shear loading system, a data acquisition control system and a base protection system.The sample container system is formed by splicing a plurality of modular sample containers; the modularized sample container is connected through a detachable connecting fastener, a replaceable lining plate is arranged in the container and is used for adjusting the size and interface conditions of the sample container, and an embedded porous pressure plate is arranged at the bottom of the container and is used for measuring the pore pressure change in the sample seepage process. By installing the base, the protection system and the normal loading system, the function of uniformly applying normal force in the shearing process is achieved, the problem that the test result is affected by eccentric errors in the shearing process is solved, and the precision and stability of the shearing test are improved.

The invention discloses a carbon dioxide monitoring method. The method comprises the following steps: arranging a temperature sensor, a strain gauge type pressure sensor, a Ca < 2 + > concentration sensor and a tracer agent concentration sensor; a tracer agent is injected into the injection well to monitor the moving track and the leakage condition of CO2; when the formation temperature rise exceeds a threshold A, the formation pressure change exceeds a threshold B, the Ca2 + concentration exceeds a threshold C, and the tracer concentration is below a threshold D, when at least three of the conditions are achieved, or only two of the conditions are achieved, and at least one of the conditions exceeds 20-30% of the respective threshold, the tracer concentration is determined to be less than the threshold D. And if not, inputting the stratum parameters and the tracer agent characteristic data into a pre-trained machine learning model, calculating the addition amount of the additive, and injecting the additive into an injection well. The invention further claims to protect the carbon dioxide monitoring device. The performance of the tracer agent in the CO2 monitoring process can be intelligently evaluated and maintained, and the moving track and the leakage condition of CO2 are accurately monitored.

The invention relates to the technical field of electronic equipment, in particular to a tablet computer lateral protection structure and a tablet computer. According to the technical scheme, the lateral protection structure of the tablet personal computer comprises a strip-shaped air bag, a strip-shaped groove is formed in the edge of the front face of the tablet personal computer, the strip-shaped air bag is arranged in the strip-shaped groove in an embedded mode, protection air bags are arranged on the side edges of the tablet personal computer in an embedded mode, and arc-shaped buffering pads are arranged on the protection air bags. And communicating assemblies are arranged between the close parts of the protective air bags and the strip-shaped air bags. According to the tablet personal computer lateral protection structure and the tablet personal computer, by designing the strip-shaped air bag, the protection air bag, the arc-shaped buffering cushion and other assemblies, the problem that the tablet personal computer is prone to lateral impact and collision in the carrying and using process is effectively solved.

The invention provides an engineering operation vehicle load analysis method which comprises the following steps: predicting the change trend of the pressure of a hydraulic cylinder according to the descending speed and the load capacity of a fork, establishing a pressure prediction model through a support vector machine algorithm, and when the predicted pressure exceeds a safety threshold value, controlling the opening degree of a cushion valve in advance to realize predictive control of the pressure; a fuzzy rule base is established by combining the loading capacity of a forklift, the descending speed of a pallet fork and the pressure of a hydraulic cylinder, fuzzy self-adaptive control over the opening degree of a cushion valve is achieved, the opening degree of the cushion valve is automatically adjusted according to different working conditions, and it is ensured that the pressure of a hydraulic system is stabilized within a safety range. Establishing a nonlinear mapping relation among the loading capacity, the descending speed of the pallet fork and the opening degree of the buffer valve, training and optimizing a neural network model, achieving intelligent control over the opening degree of the buffer valve, and automatically adjusting the opening degree of the buffer valve according to the loading capacity and the descending speed of the pallet fork which are collected in real time.

The invention relates to the technical field of inspection robots, and discloses an underground coal mine robot inspection man-machine interaction platform which comprises a height adjusting assembly, the bottom end of the height adjusting assembly is installed at the top of an anti-explosion machine body, a buffering assembly is installed at the top of the height adjusting assembly and used for relieving impact force of falling objects on the upper portion, and an object receiving platform is arranged at the top of the buffering assembly and used for receiving objects on the object receiving platform. A matrix sensor module is arranged at the top of the object receiving platform and used for accurately weighing the weight change of the falling object and judging the condition of the falling object in real time, so that the robot conducts environment monitoring and dynamic adjustment. By integrating a height adjusting assembly, a matrix sensor module, a buffer assembly and a dust collection cleaning system, the problems of falling object impact, dust pollution and equipment cleaning faced by the underground coal mine robot in the inspection process are solved, and the adaptability, stability and inspection efficiency of the robot in a complex environment are improved; and the cleanliness and accuracy of the equipment are ensured, so that the inspection process and data acquisition are optimized.

The invention provides a titanium molten salt electrolysis device design method based on numerical simulation guidance, and relates to the technical field of molten salt electrolysis device structure design. Aiming at the problems of unreasonable structural design, high energy consumption, low space utilization rate and the like of a kiloampere-level and above electrolysis device in the industrial process of preparing titanium metal through melting electrolysis, the method comprises the following steps: firstly, obtaining key electrolysis parameters through basic experiment research, and then applying the key electrolysis parameters to a numerical simulation model; modeling and multi-physics field coupling are carried out based on commercial simulation software, thermal field distribution of the electrolytic cell is simulated, and then the structural design and spatial layout of the electrolytic cell are optimized, so that self-heating design of efficient space utilization and efficient energy utilization of the electrolytic cell at the kiloampere level and above is achieved. The method is simple and easy to operate, environmentally friendly, high in economic applicability, low in cost, high in efficiency and beneficial to industrial large-scale production and popularization.

The utility model relates to the technical field of tractor air inlet systems, in particular to a tractor air inlet system and a tractor, the structure of the tractor air inlet system comprises an air prefilter, the air prefilter comprises an outer net, and the outer net is installed in the middle of a prefilter shell; the filtering part is arranged on the inner side of the outer net, and an air inlet is formed in the filtering part; and the ash deposition basin is mounted at the lower part of the prefilter shell, and the bottom end of the filtering part is communicated with the ash deposition basin. According to the tractor air inlet system and the tractor, the problem that an existing air prefilter can discharge dust into air, and the working environment is affected can be solved.

The utility model provides an energy -saving type cowshed ventilation fan belongs to ventilation fan field, including fan frame and fan blade, the positive rear of fan blade is provided with drive motor, and drive motor's output is fixedly connected with the axle core department of fan blade, the fan blade is located the inside of fan frame, and drive motor is fixedly connected with fan frame through connecting piece, one side of fan frame is fixedly connected with two upper and lower symmetry connecting blocks, the bottom end of the connecting block of the most top is rotatably connected with connecting rod through bearing, and the bottom end of connecting rod penetrates and rotatably another connecting block through bearing and extends its downside. The utility model is favorable to the equipment orientation of installation completion convenient adjustment, can carry out equipment height adjustment according to the environment at will, reduces the operation difficulty of installation personnel and the later adjustment time, guarantees optimal wind direction and angle and carries out heat dissipation, realizes manual and energy double energy -conservation, solves the angle adjustment of convenient to it and the consumption of manual in prior art after fixing.

The utility model discloses a mounting pipe for air flow meter, engine air inlet pipeline and automobile, the mounting pipe for air flow meter comprises a first pipe body, a barrel-shaped body and an air outlet pipe, the first pipe body is provided with a mounting seat used for mounting an air flow sensor, the barrel-shaped body is buckled on the part of the first pipe body close to the air outlet end along the axial direction of the first pipe body, and the air outlet pipe is provided with an air inlet. The end, close to the installation base, of the barrel-shaped body is connected with the outer wall of the first pipe body in a sealed mode, a first airflow cavity is formed in the part, except the first pipe body, in the barrel-shaped body, an air outlet of the first airflow cavity is formed in the side wall of the barrel-shaped body, the air outlet pipe is connected with the air outlet, and the pipe wall of the air outlet pipe is in bypass connection with an access pipe used for being connected with a crankcase ventilation pipeline. According to the installation pipe for the air flow meter, a smaller arrangement space is utilized, and the problem that ventilation airflow of a crankcase influences measurement work of an air flow sensor is solved.

The present invention provides a device and method for measuring the unevenness of a permanent magnetic track, which relates to the technical field of permanent magnetic track detection, including a superconducting levitator; a Hall detection device is arranged on the superconducting levitator, one end of the Hall detection device extends toward the permanent magnetic track to form a positioning end, and a plurality of Hall sensors are arranged uniformly at the same interval along the width direction of the permanent magnetic track on the positioning end, and the plurality of Hall sensors are located on the same horizontal plane as the bottom of the superconductor in the superconducting levitator; an acceleration detection device is arranged on the superconducting levitator, the acceleration detection device is arranged along the length direction of the permanent magnetic track, one end of the acceleration detection device extends toward the permanent magnetic track to form a measuring end, and the height of the measuring end of the acceleration detection device is consistent with the height of the center of mass of the superconducting levitator. The present invention solves the problem that the measurement data of the prior art cannot meet the high-precision requirements, resulting in the inability to judge the health of the permanent magnetic track.

The utility model relates to the technical field of clothing production, and discloses a clothing air-drying rack for clothing production, which comprises an air-drying rack body and a water collecting mechanism arranged at the bottom of the inner side of the air-drying rack body, the air-drying rack body comprises a vertical rack and a transverse rack, and the transverse rack is arranged at the top of the vertical rack. According to the garment air drying frame for garment production, a compression plate rotates towards the inner side through deformation recovery of a torsion spring, a compression block compresses garment fabric through rotation of the compression plate, then a water collecting seat drives a side block to move, and the side block moves to drive a first magnet to sleeve the surface of a limiting column from top to bottom; the water collecting seat can be mounted on the inner side of the vertical frame until the first magnet is magnetically connected with the second magnet, so that the problem that in the air drying process of the garment fabric, part of water can be evaporated into the air, and the rest of water can drip onto the ground under the action of gravity, so that the ground environment is affected can be solved.

The utility model relates to pipe hoop formula high pressure exhaust nozzle, including sealing sheet and install the nozzle assembly on sealing sheet, the nozzle assembly includes: pressure relief spare, the medium flow channel is opened in pressure relief spare, and the cap body is rotatoryly arranged outside pressure relief spare, the first export and the second export are opened in cap body, the output direction level of first export, the output direction vertical of second export, the cap body transforms between first state and second state when rotating around pressure relief spare, first state, the medium flow channel is connected first export, second state, the medium flow channel is connected second export, the utility model discloses through setting up rotatable cap body outside pressure relief spare, and the communication state of first export of horizontal direction and second export of vertical direction and medium flow channel is switched with rotation, realizes the flexible adjustment of exhaust direction between side and top, breaks through the limitation of traditional exhaust nozzle fixed exhaust direction.

The utility model discloses a multi-station board transfer device, which relates to the technical field of transfer devices and comprises a transfer table, a longitudinal groove is formed in the top of the transfer table, transverse grooves are formed in the transfer table and located at the two ends of the longitudinal groove, second oil cylinders are arranged at the four corners of the bottom of the transverse grooves, and bottom plates are arranged at the two ends inside the transverse grooves. The bottom of the bottom plate is fixed to the output end of a second oil cylinder, the transfer table is arranged at the end of the discharging position of a conveyed wood board, and through work of the conveying mechanism at the longitudinal groove, the wood board can pass through the end, away from the discharging position, of the longitudinal groove to serve as a first transfer point; the bottom plate and the conveying mechanism located at the positions of the transverse grooves in the two sides are matched with the U-shaped frame in the longitudinal groove to work, a second transfer point and a third transfer point can be formed, and therefore original single-position discharging transfer is changed into three-position discharging transfer, hidden dangers and influences caused by single-position transfer on the safety and physical strength of workers are avoided, and the working efficiency is improved. And meanwhile, the transferring and discharging efficiency is also improved.

The application provides a mute buffer lock body, which comprises a lock body outer lining plate, a lock body box bottom assembly, a tongue peach mechanism, a latch assembly, a lock body box cover, the lock body box bottom assembly comprises a box bottom and a lock body inner lining plate; further comprising: a latch damper, a latch silencer block is embedded on the lock body inner lining plate, the latch assembly comprises a latch assembly mute buffer mechanism, the latch peach mechanism comprises a latch peach silencer assembly, noise generated by the latch assembly during use is eliminated through the latch assembly mute buffer mechanism, the latch damper, the latch silencer block and the latch peach silencer assembly. By using the application, the problem that noise is generated by the impact or friction between components of the lock body when the door is closed or opened can be solved.

The utility model discloses a hot and sour rice noodle processing, cutting and stirring device, which relates to the technical field of food processing equipment and particularly comprises a stirring barrel, a guide rod is vertically arranged at the top of the stirring barrel, a transparent glass cover is arranged at the top of the stirring barrel and positioned on the side surface of the guide rod, and a movable plate is movably sleeved on the surface of the guide rod. A first speed reduction control motor is arranged at the top of the movable plate, and a cutting mixing rod is arranged on the lower surface of the movable plate. By arranging the filter box, the transparent glass cover and the air pump, when the cutting and stirring device is started to work, odor can be covered by the transparent glass cover and is not prone to flowing out, then the air pump works to extract air, the air reaches the interior of the filter box from an inlet pipe to be filtered, and then the filtered air is exhausted through an exhaust pipe on the air pump; the effects of filtering the odor generated in the working process of the cutting and stirring device and preventing pungent odor from directly entering the air are achieved, and the problem that the seasoning flavor of the existing hot and sour rice noodles enters the air and affects workers is solved.

The invention provides a tray-type fixed-point conveying system and a using method thereof, and relates to the technical field of logistics transportation, the tray-type fixed-point conveying system comprises a conveying line, and the conveying line comprises a conveying driving surface and a non-driving surface; the tray device is arranged on the conveying line, and a mortise lock opening is formed in the side face of the tray device; the disc stopping device is arranged on one side of the conveying line; when the conveying line drives the tray device to reach one side of the tray stopping device, the tray stopping device is locked into the tray device through a mortise lock opening so as to insert and stop trays for the tray stopping device, and meanwhile the tray device leaves the conveying driving face of the conveying line and makes contact with the non-driving face of the conveying line. And after plug-in mounting and tray stopping are completed, the tray stopping device converts the tray devices to the other side to sequentially store the tray devices in the height direction, and continues to be switched into a tray stopping waiting state for other tray devices. According to the conveying system provided by the invention, the stable stopping of the tray to the stopping point can be realized, so that the tray, the stopping point and goods on the tray are protected.

The invention discloses a low-energy-consumption microalgae cell separating and harvesting device and method based on plant fibers, and particularly relates to the field of microalgae cell concentration and separation. Comprising a separation box, the separation box communicates with a liquid inlet pipe and an air inlet pipe, the liquid inlet pipe is provided with a first valve, the air inlet pipe is connected with an inflation pump, the separation box communicates with a liquid discharging pipe, the liquid discharging pipe is provided with a second valve, the two sides of the separation box communicate with feeding channels, and the space between the two feeding channels is filled with a plant fiber filtering layer. A fixed plate and a movable plate are arranged in the separation box, a first water passing hole is formed in the fixed plate, a driving assembly used for driving the movable plate to slide in the separation box is arranged on the movable plate, and a second water passing hole is formed in the movable plate. By the adoption of the technical scheme, the problem that an existing device cannot achieve efficient collection and separation of a large number of algae cells in an artificial culture scene or an algae bloom scene of unicellular algae is solved, and resource utilization of natural plant fiber materials and efficient harvesting of the algae cells are achieved.

The present invention provides a forging manipulator hanging system, which includes: a main shaft, a connecting rod assembly, a hollow hanging arm, and a grate bar. The main shaft extends in the left-right direction, and the frame of the forging manipulator limits the connecting rod assembly in the left-right direction; the hollow hanging arm is sleeved on the main shaft and fixedly connected to the main shaft, and the number of grate bars is two. The two ends of the hollow hanging arm are respectively abutted on the two grate bars, and the grate bars are tightened between the end of the hollow hanging arm and the side wall of the corresponding end. The hollow hanging arm cooperates with two side arms respectively to clamp the two grate bars in the left-right direction. The problem of interference and collision between the cylinder barrel of the horizontal lifting cylinder and the forging manipulator is solved, which is conducive to extending the service life of the forging manipulator and the horizontal lifting cylinder. The problem of asynchronous lifting and skew of the hanging system is solved, so that the jaws are accurately positioned when forging forging materials, the occurrence of quality problems such as deviation is reduced, and the forging processing quality is improved.

The present invention relates to a camera calibration optimization method based on sample space, and relates to the technical field of camera parameter calibration, comprising the following steps: collecting calibration pictures to form a sample space; global sample optimization to achieve sample screening; local parameter fitting to improve calibration accuracy; obtaining calibration results; and result verification. The advantages are: the camera calibration optimization method based on sample space provided by the present invention solves the problem that the accuracy of camera calibration parameters is greatly affected by calibration pictures, can select samples that are beneficial to calibration, and obtains a higher calibration accuracy than general calibration algorithms.

The utility model discloses a pole holding box for power failure detection in the technical field of pole holding boxes, which comprises a heat dissipation outer box and a dirt separation plate, the front surface of the heat dissipation outer box is rotatably connected with a box door flow guide hole through a hinge, and the top surface of the heat dissipation outer box is fixedly connected with a gas transmission top cover; whether a circuit is powered off or not can be detected in time through the circuit monitor switch, an alarm is given out, timely maintenance is facilitated, meanwhile, the gas can enter the gap between the heat dissipation outer box and the heat dissipation inner box through the gas transmission top cover, and the gas transmission top cover and the gas transmission top cover are fixedly connected through bolts. Air is in contact with the transverse cooling fins and the heat dissipation base to be cooled, then the cooled air enters the inner box from the air holes to cool electric elements in the heat dissipation outer box, and finally the heat dissipation outer box is erected from the air outlets, so that the cooling effect is achieved, the influence of the external temperature is reduced, and the problem that the cooling effect is poor when the external temperature is high is solved; and the service life of the power element is prolonged.

The invention provides an efficient combustor and a low-load stable combustion boiler, and relates to the field of thermal power generation, the efficient combustor comprises a mounting cylinder, a connecting disc is fixedly arranged at the rear end of the interior of the mounting cylinder, a flow equalizing assembly is arranged in the mounting cylinder, a rotational flow assembly is arranged at the front end of the flow equalizing assembly, and a flow stabilizing assembly is arranged at the front end of the rotational flow assembly; a connecting assembly is arranged at the rear end of the connecting disc, a conveying assembly is arranged in the connecting assembly, an air supply assembly is arranged behind the connecting assembly, and a combustion-supporting assembly is arranged above the connecting assembly. By means of the flow equalizing assembly, resistance is reduced at high air pressure through the flow equalizing assembly, and energy consumption of the draught fan is reduced; the flow speed is increased at low wind pressure, so that airflow distribution and flow speed are uniform, flame drift caused by non-uniform flow speed at low load is avoided, airflow is ensured to enter a combustion area at the most ideal flow speed, and the combustion stability is improved.

The present invention provides a method for controlling the segmented pressure relief and reinforcement of the tunnel roof based on double tunnel excavation, including: obtaining geological parameters of the coal seam roof; according to the geological parameters, drilling holes obliquely toward the coal seam roof at the side tunnel wall of the coal pillar in the second tunnel, so that the drilled holes pass through the direct roof of the first tunnel and extend into the basic roof of the mining face; based on the section where the drill hole located at the basic roof is located, hydraulic fracturing is performed on the basic roof; based on the section where the drill hole located at the direct roof is located, grouting reinforcement is performed on the direct roof. The present invention not only optimizes the fracturing and grouting operation procedures in terms of technology and improves the operation efficiency, but also can alleviate the influence of the high advanced support pressure and lateral support pressure caused by the difficulty of hard roof collapse on the stability of the tunnel surrounding rock, improve the structural integrity and bearing capacity of the local roof of the tunnel, transfer the stress above the coal pillar in the section to a certain extent, and achieve the purpose of controlling the deformation of the tunnel surrounding rock.

The present invention discloses an output protection circuit of an inverter circuit, comprising an inverter circuit, an output current and output voltage sampling circuit, a working current sampling circuit, a first and a second short-circuit current judgment circuit, a short-circuit voltage judgment circuit, a delay circuit and a reference voltage control circuit. The output current and output voltage sampling circuits are used to respectively sample the output current and the output voltage and transmit them to the first short-circuit current judgment circuit and the short-circuit voltage judgment circuit for output short-circuit judgment, and jointly control the reference voltage control circuit to lower the reference voltage of the second short-circuit current judgment circuit when the output is short-circuited. The working current sampling circuit is used to sample the working current of the switch tube and transmit it to the second short-circuit current judgment circuit for short-circuit judgment, and output the short-circuit signal to the drive circuit of the inverter circuit for short-circuit protection. The delay circuit is used to delay the reference voltage of the second short-circuit current judgment circuit to recover to an initial voltage value.

The utility model relates to the technical field of furniture hardware, and discloses a double-material safety angle bead with anti-collision rubber particles and buffering rubber strips, which comprises a stainless steel angle bead, a silica gel anti-collision strip and the silica gel anti-collision rubber particles, the stainless steel angle bead comprises an arc-shaped angle bead body, the arc-shaped angle bead body is used for being installed at a corner of two adjacent door frame profiles, and the silica gel anti-collision rubber particles are arranged on the arc-shaped angle bead body. A tenon is arranged on the outer edge of the arc-shaped angle bead body, and the tenon is inserted into a profile groove of a corresponding door frame profile; the silica gel anti-collision strip comprises an arc-shaped base body, an arc-shaped anti-collision strip is arranged on the arc-shaped base body in the radial direction of the outer contour of the arc-shaped base body in an extending mode, and an arc-shaped opening is formed in the arc-shaped corner protection body along the outer contour of the arc-shaped corner protection body. According to the double-material safety corner protector with the anti-collision rubber particles and the buffering rubber strips, the anti-collision problem when an aluminum frame cabinet door and a cabinet body are closed and the buffering problem when the end of the corner protector collides with an object are solved.

The utility model discloses a food processor with a speed change function, which comprises a main machine assembly, the main machine assembly comprises a main motor, a planetary reduction gear and a clutch device, the planetary reduction gear comprises a shell, a sun gear, an inner gear ring and a planet carrier, the sun gear, the inner gear ring and the planet carrier are arranged in the shell, and a planet gear is mounted on the planet carrier and meshed with the inner gear ring and the sun gear respectively. The sun gear is connected with a motor shaft of the main motor; the clutch device comprises a clutch driver, an upper clutch assembly and a lower clutch assembly, the upper clutch assembly and the lower clutch assembly are arranged on the inner side of the shell and connected with the inner gear ring, and the clutch driver is used for driving the upper clutch assembly or the lower clutch assembly so that the inner gear ring and a motor shaft of the main motor can rotate together or be fixed to the shell; therefore, the planet carrier correspondingly outputs two rotating speeds. Compared with the prior art that a double-speed-change module and a double-selection module are arranged, the cost of the whole machine is reduced, clutch control is simpler, and speed reduction output is more reliable.

The utility model provides an air energy water heater, which relates to the field of air energy water heaters and comprises a water tank and a preheating bin, the preheating bin is arranged at the inner top of the water tank, a heating component is arranged at the inner top of the preheating bin, a second temperature sensor is arranged on one side in the preheating bin, and a valve is arranged at the bottom of the preheating bin. When the liquid level sensor detects that the water level reaches a preset numerical value, an external water pipe supplements purified water into the preheating bin through the water inlet, the heating assembly heats water in the preheating bin after being started, the water in the preheating bin is heated through the first temperature sensor, and the water in the preheating bin is heated through the second temperature sensor. And when the second temperature sensor detects that the water temperature in the preheating bin is close to the water temperature in the water tank, the valve is opened, and hot water in the preheating bin is supplemented into the water tank for a user to use, so that the problem that the water temperature in the water tank is reduced to influence the user using the hot water due to direct supplementing of cold water in the prior art is solved, and the practicability of the device is improved.

The utility model discloses a BTB connector anti-drop structure and an earphone. The BTB connector anti-drop structure comprises a PCB, an FPC, a first connecting piece, a second connecting piece and an anti-drop piece. The first connecting piece is arranged on the PCB, and the second connecting piece is electrically connected to one surface, close to the PCB, of the FPC; the anti-falling piece is arranged on one surface, far away from the PCB, of the FPC; the second connecting piece is inserted into the first connecting piece, and the anti-disengaging piece is buckled to the first connecting piece so as to keep the inserting state of the first connecting piece and the second connecting piece. Compared with the prior art, the BTB connector has the advantages that the first connecting piece and the second connecting piece are prevented from falling off by arranging the anti-falling piece and utilizing the mutual buckling between the anti-falling piece and the first connecting piece, and on the basis of ensuring the realization of the anti-falling function, the number of anti-falling structural pieces of the BTB connector is reduced, the production cost is reduced, and the assembly efficiency is improved.

The present invention belongs to the technical field of NVH of hybrid electric vehicles, and discloses a method, device, equipment and storage medium for controlling a vehicle when going over a bump. The present invention obtains the vibration acceleration value of the hybrid electric vehicle when the impact acceleration is greater than the acceleration when going over a bump, compares the vibration acceleration value with the vibration acceleration threshold, obtains the vibration frequency of the hybrid electric vehicle when the vibration acceleration value is greater than the vibration acceleration threshold, and controls the active suspension system and the power system in the hybrid electric vehicle when the frequency difference between the vibration frequency and the up and down bouncing mode of the powertrain is within a preset range, so as to optimize the bump impact of the hybrid electric vehicle. Compared with the prior art, the present application can effectively solve the bump impact and residual vibration problems of hybrid electric vehicles, and has a high optimization efficiency.

This invention provides a terminal antenna that reduces the impact of human head and hand on the antenna. The terminal antenna includes a feed point, a ground point, a first stub trace, a second stub trace, and a third stub trace. An opening is provided between the first and third stub traces, and the first and second stub traces are symmetrical about the opening. The first and second stub traces are connected to form a first slot, and the third stub trace has a second slot. Adjusting the first and second slots controls the frequency band of the terminal antenna. This terminal antenna that reduces the impact of human head and hand on the antenna solves the problem of the significant influence of human head and hand on the antenna, improves the antenna performance in the presence of human head and hand, and reduces the impact of human head and hand on the antenna.