100results about How to "Guaranteed life" patented technology

A hollow two-dimensional piezoelectric flexible hinge platform disclosed by the present invention comprises a flexible hinge main body, a working platform located in the central area of the flexible hinge main body, a displacement amplification mechanism, a flexible hinge connecting rod and a cover plate assembly, the flexible hinge main body is arranged in a hollow frame type structure, and a through hole for light beam straight-through is formed in the center of the flexible hinge main body. The number of the displacement amplification mechanisms is two, the two displacement amplification mechanisms correspond to X-direction movement and Y-direction movement of the platform respectively, and each displacement amplification mechanism comprises a first lever amplification mechanism and a second lever amplification mechanism which are symmetrically arranged on the two opposite sides of the flexible hinge body. The first lever amplification mechanism and the second lever amplification mechanism are both connected with piezoelectric actuators. The invention relates to the technical field of mechanical precision displacement driving, and the platform has a highly compact integrated structure, excellent motion decoupling performance, a high-precision differential driving mode and good bearing capacity while the central clear aperture is ensured.

The utility model discloses a kind of pollution expansion machines, comprising: lower jar body, upper jar body, steam-water separation mechanism, rotating mechanism, upper jar body is detachably connected in lower jar body, upper jar body and lower jar body jointly form jar body structure, steam-water separation mechanism is connected in jar body structure, rotating mechanism includes: shaft body, height adjustment assembly, shaft body is rotatably connected in lower jar body, height adjustment assembly connects shaft body with upper jar body, and for adjusting the height position of upper jar body. By rotating upper jar body to let out operating space, avoid the inconvenience in traditional structure, clean dirt in jar body or overhaul structure in jar body through manhole;Height adjustment assembly flexible adaptation upper jar body and lower jar body structure dislocation, without the aid of external lifting equipment, it is convenient to rotate upper jar body, realize the purpose of quickly opening upper jar body.

The invention provides a multi-dimensional vibration platform with oppositely-arranged double-sandwich piezoelectric actuators and an excitation method of the multi-dimensional vibration platform, and belongs to the technical field of high-frequency vibration engineering and micro-nano machining.The vibration platform comprises a center platform, the two oppositely-arranged piezoelectric actuators, two end covers and two bolts, wherein the center platform is integrated with the tail end platform, the two flexible hinges and the two amplitude-change poles, and the center platform is slender and is in mirror symmetry about the longitudinal symmetry plane of the tail end platform. The piezoelectric actuator comprises a longitudinal vibration ceramic group, a bending vibration ceramic group around the Y axis and a bending vibration ceramic group around the Z axis, translation along the X / Y / Z axis and rotation around the Y / Z axis can be realized through in-phase or anti-phase excitation different combinations under the condition of not increasing extra driving channels, and five-degree-of-freedom high-frequency micro-vibration output can be achieved at most. The structure has high symmetry, low parasitic vibration, compact size and high integration, and is suitable for precise engineering scenes such as micro-nano processing, laser-assisted manufacturing, cell manipulation and active vibration suppression.

The application discloses an automatic overline pay-off trolley and relates to the technical field of cable overhead installation. The automatic overline pay-off trolley comprises a frame body arranged on a pay-off trolley body, a plurality of pulleys rotatably connected to the frame body, two groups of protection mechanisms arranged on the two sides of the pulleys and fixed to the side walls of the frame body, and can protect the pulleys when a walking plate is pulled by a traction rope and a cable passes through the pulleys. Each group of the protection mechanisms comprises a mounting frame fixed to the side wall of the frame body through a connecting frame. The automatic overline pay-off trolley can avoid the impact of the walking plate on the pulleys, and can make the walking plate pass above the pulleys without contacting the pulleys, so that the pulleys are protected, the service effect and the service life are ensured, and after the cable is conveyed on the pulleys, the cable on the pulleys is limited, so that the cable is prevented from deviating or even separating from the pulleys, and the service effect is ensured.

The invention relates to a magnetizing system, and the system comprises a power supply U1 which is used for supplying power to a first capacitor C1; the first end of the first switch K1 is connected with the power supply U1, and the second end of the first switch K1 is connected with the first capacitor C1; the first end of the second switch K2 is respectively connected with the first capacitor C1 and the first switch K1; the magnetizing coil comprises a first resistor R1 and an inductor L1, and the first end of the magnetizing coil is coupled with the second end of the second switch K2; the first end of the second resistor R2 is respectively connected with the second switch K2 and the magnetizing coil; the first end of the first switching device is connected with the second end of the second resistor R2, and the second end of the first switching device is connected with the third end of the first switch K1 and the second end of the magnetizing coil. According to the invention, heat in the magnetizing coil can be transferred by using the second resistor R2 so as to ensure stable work of the magnetizing coil.

The application discloses a kind of copper sulfate electroplating solution preparation device and method for chip packaging, it is related to chip packaging technical field, and its technical solution points are as follows: including copper sulfate pentahydrate storage tank, negative pressure feeder, feed volume bin, electronic scale, copper sulfate solution preparation tank, preparation pump one, micropore filter one, resin barrel, electroplating solution preparation tank, spiral spray head, preparation pump two, heat exchanger, micropore filter two;Copper sulfate pentahydrate storage tank is connected by negative pressure feeder, feed volume bin, electronic scale and copper sulfate solution preparation tank;Copper sulfate solution preparation tank is communicated with electroplating solution preparation tank by micropore filter one and resin barrel, and copper sulfate solution is added into electroplating solution preparation tank by preparation pump one after preparation in copper sulfate solution preparation tank;Electroplating solution preparation tank and preparation pump two, heat exchanger form circulating system, and micropore filter two is used to fill electroplating solution.The whole preparation device of the application adopts automatic instrument and logic control, and full-process can realize automatic and intelligent operation.

The invention discloses a segmented series spring shock absorber and machining equipment, and belongs to the technical field of vehicle shock absorption. The shock absorber comprises a gas spring, a heavy-load spring, a light-load spring and a retainer, wherein the retainer is arranged between the light-load spring and the heavy-load spring; a load energy release device and a temperature adaptation assembly are further arranged on the retainer, and the load energy release device comprises a bearing disc, an annular storage cavity and an energy release pad and is used for absorbing beat vibration energy; the temperature adaptation assembly comprises a ventilation hole and a friction pad, heat generated by the friction pad can be transmitted to the energy release pad, and low-temperature compensation and high-temperature heat dissipation are achieved. The invention further provides milling equipment for machining the clamping-in groove and the wedge-shaped groove, precise machining of the wedge-shaped groove is achieved through the eccentric milling principle, and the pressure relieving assembly ensures that a cutter stably stretches out through buffering of non-Newtonian fluid. The problems of response accuracy, retainer stability, beating vibration durability and temperature adaptability of the shock absorber under different load working conditions are effectively solved.

The invention belongs to an intelligent highway pavement structure based on a self-sensing asphalt material and a monitoring system of the intelligent highway pavement structure, and discloses the intelligent highway pavement structure based on the self-sensing asphalt material and the monitoring system of the intelligent highway pavement structure. A pavement structural surface layer is made of a self-sensing asphalt mixture containing an amorphous silicon-based composite functional phase, the functional phase is prepared through a specific process, a nano bowl-shaped array is arranged on the surface of the functional phase, tungsten carbide nano crystal nucleuses are coated on the surface of the functional phase, and the functional phase and asphaltene form a non-equilibrium electron cloud overlapping system. The monitoring system is based on a non-contact microwave resonant cavity coupling principle, analyzes reflected signals, extracts characteristic vectors, and inverts real-time stress, strain, damage factors and temperature state parameters in combination with an inverse problem solver. A traditional sensor pre-embedding mode is abandoned, the pavement body and the sensing function are fused, the problems of implantation damage, life mismatching, low spatial resolution and the like are solved, and a new normal form is provided for intelligent road safety early warning and full-life management.

The utility model discloses a back spray piece and back spray assembly, back spray piece includes the body, switching part and first reset part. The body is equipped with the water inlet hole and is suitable for with the water outlet hole of water inlet hole intercommunication, and the back spray water hole is suitable for along the first direction parallel to the horizontal plane and / or the direction of inclination to the first direction and washes to the back plate of human body, switching part is suitable for the movement between the first position and second position, and switching part is in the first position, makes water inlet hole and back spray water hole intercommunication, in the second position, makes water inlet hole and back spray water hole not intercommunication, thereby realizes the switching of waterway. The both ends of first reset part act on the body and switching part respectively, and are suitable for energy storage when switching part moves to the first position, and release energy to drive switching part to reset to the second position when back spray water hole does not water, prevent the next time opening, and back spray water hole directly water, lead to the splash problem of opening, and simultaneously, it can also assist switching part to switch to the second position, and it is more labor-saving when switching.

The utility model relates to the technical field of electronic cigarettes, and discloses a ceramic atomization core heating wire which comprises a heating wire body and a grabbing foot. The two ends of the heating wire are electrically connected with the two electrodes respectively. At least two heating wires are wound on the ceramic atomizing core side by side at a set interval in a snake-shaped or bow-shaped manner, and the two heating wires are densely distributed to form a heating area; and the electrode and the heating wire in the heating area are fixed on the ceramic atomizing core through grabbing feet. The at least two heating wires are arranged on the ceramic atomizing core side by side at the set interval, so that the heating uniformity is ensured, the atomizing efficiency and quality are improved, the fine taste and plumpness are improved, local heat accumulation can be effectively avoided, and carbon deposition generated by insufficient combustion is reduced; the coiled heating wire is fixed through the grabbing feet, the position of the heating wire is stabilized, the risk that the heating wire shifts or is separated from the atomization core is reduced, and therefore heating uniformity is kept.

This utility model relates to a quick-assembly and disassembly device, specifically a safety protection device that allows for quick assembly and disassembly. It includes a protective cover with mounting plates symmetrically arranged at both ends. A wire-binding component is fixedly mounted on the side wall of each mounting plate. The wire-binding component includes a first wire clamp and a second wire clamp with identical structural shapes. The two wire-binding components are detachably mounted at both ends of the protective cover. A gravity locking rod is fixedly mounted on the side wall of the first wire clamp, used to achieve gravity locking with both ends of the protective cover. Both the first and second wire clamps have wire outlets through which the wire bundle passes. The arrangement of a movable rod and magnets allows the wire outlets to open and close flexibly. When the movable rod rotates and the first and second magnets attract each other, the wire outlets close, preventing the wire bundle from coming out and protecting it from external interference. When it is necessary to organize the wire bundle, pulling the movable rod separates the magnets, opening the wire outlets for easy wire organization and threading.

The invention relates to the technical field of comprehensive rods, and discloses a solar comprehensive rod with an energy storage function, the solar comprehensive rod comprises a rod body, the outer wall of the bottom end of the rod body is clamped with a battery protection shell for placing an energy storage battery through a mounting seat, and the device and the battery are convenient to overhaul through clamping; a protection device explosion-proof assembly and a cooling assembly used for battery cooling are arranged in the battery protection shell, solar energy is captured to the maximum extent through an adjustable solar panel and stored in a special energy storage battery, and clean electric power is provided for pole body illumination and external charging facilities. The device integrates a multi-stage protection mechanism triggered by pressure and temperature, through pressure relief, cooling, separation and progressive treatment according to dangers of different degrees, when control cannot be achieved, the separation assembly actively cuts off electrical connection and pushes the whole battery bin away from the rod body, the safety of the device body and the surrounding environment of the device body is protected to the maximum extent, and the safety of the device body is improved. And the problem of insufficient safety of the battery is solved.

The invention belongs to the field of vanillin filtering and processing, and discloses a filter for purifying high-purity vanillin, which comprises a shell and a heat preservation sleeve part distributed around the outer part of the shell, and further comprises a filtering assembly elastically arranged in the shell in a sliding manner, and a filter pressing plate is connected with a driver at the top end of the shell through a driving shaft; the filter pressing plate reciprocates in the shell, a solution is sucked into the position between the filter pressing plate and the filter assembly by changing the internal pressure of the shell below the filter pressing plate, or the solution penetrates through the filter assembly to be discharged, meanwhile, the filter plate drives the filter assembly to move through the connecting mechanism in the moving process, and the filter assembly is prevented from being blocked by impurities in the reciprocating motion process. According to the filter for purifying the high-purity vanillin, the reciprocating filter pressing plate is creatively adopted as a fluid conveying functional part, so that the economic investment of equipment is saved, the coordination of filter pressing and conveying in the filtering process is ensured, and the overall service life of the filter is ensured while the filtering efficiency of a vanillin solution is improved.

The utility model discloses a warm air blower, which relates to the field of warm air blowers, and adopts the technical scheme that the warm air blower comprises a machine body, a heat insulation net is mounted on the front side of the machine body, a ventilation grille is arranged on the rear side of the machine body, protective shells are arranged on two sides of the machine body, rolling columns are arranged in the two protective shells, and covering cloth is fixedly connected onto the rolling columns. One end of the covering cloth can be fixed to the machine body, and a containing groove is formed in the ventilation grille. When the machine body needs to be stored, people pull out one end of the shielding cloth and fix the other end of the shielding cloth to the machine body, at the moment, the winding column can apply pulling force to the shielding cloth, so that the shielding cloth can be tightly attached to the machine body, the ventilation fence and the heat insulation net are both shielded and sealed by the shielding cloth, and the difficulty that water vapor and dust enter the machine body can be increased; and the containing groove is formed, so that people can put moisture absorption tools such as a drying bag into the containing groove, the immersion of water vapor in the machine body is reduced, and the overall service life of elements in the fan heater is guaranteed.

The application provides a multi-chip stacked package structure and a preparation method thereof. The multi-chip stacked package structure comprises a first chip distributed on a substrate, a side surface of the first chip being covered by a first plastic package structure; a second chip stacked on the first chip, a side surface and a bottom surface of the second chip being covered by a second plastic package structure; and a heat dissipation structure comprising micro-flow channels located on both sides of the first chip and the second chip, the micro-flow channels penetrating a top surface of the second plastic package structure and extending to a bottom surface of the first plastic package structure, and side surfaces of the micro-flow channels being covered by the first plastic package structure and the second plastic package structure. The multi-chip stacked package structure can quickly conduct the heat generated by the chips to the outside of the overall package structure, avoid the accumulation of heat in the plastic package structure, and ensure the reliability and service life of the device.

The invention discloses a fuel cell engine hydrogen subsystem fault diagnosis control method and system, and relates to the field of vehicle fault diagnosis, and the method comprises the steps: collecting the operation data of a fuel cell engine; fault diagnosis is carried out on different parts of the hydrogen subsystem according to a preset combination and sequence according to the fuel cell engine operation data; the fault diagnosis combination comprises a first diagnosis combination, a second diagnosis combination and a third diagnosis combination, all the combinations are diagnosed in parallel, and the combinations are executed according to a fixed sequence and relevance between faults is considered; the first diagnosis combination comprises the steps of performing fault diagnosis on a hydrogen stop valve and performing fault diagnosis on a proportional valve inlet hydrogen pressure sensor; the second diagnosis combination comprises the steps of carrying out fault diagnosis on the proportional valve, carrying out fault diagnosis on the in-pile hydrogen pressure sensor and carrying out fault diagnosis on the out-pile hydrogen pressure sensor; the third diagnosis combination comprises the step of carrying out fault diagnosis on leakage of the exhaust and drainage valve and the hydrogen subsystem.

The invention provides an adjusting device, method, system and equipment for adjusting states of three red lines of an engine, and relates to the field of airworthiness verification tests of the engine, the adjusting device comprises a swirler, the swirler is arranged in an air inlet channel of the engine, and the swirler is arranged perpendicular to the axis of the engine. The swirler comprises a swirl guide vane which can rotate in the radial direction of the engine, so that the pre-swirl angle of the swirler is adjustable. According to the invention, the thrust of the engine is effectively reduced by controlling the rotation of the rotational flow guide vane, adjusting the pre-rotation angle of the swirler and reducing the flow of the outer culvert airflow of the engine, so that the engine is prevented from generating excessive thrust, and the thrust of the engine does not exceed the red line state too much when the rotating speed of the rotor reaches the red line state; the strength and the service life of key components such as an engine fan, a gas compressor and a turbine are ensured.

This utility model relates to the field of proton exchange membrane electrode technology, and in particular to a proton exchange membrane electrode package and its electrode structure. It includes an electrode body with symmetrically arranged packaging frames on its upper and lower sides. A packaging groove matching the specifications of the electrode body is formed at one end of the packaging frame near the electrode body. An inner frame matching the specifications is formed on the inner end face of the packaging groove. The inner frame is a composite structure comprising a positioning layer, a heat insulation layer, and a bonding layer. A positioning component is provided between the positioning layer and the inner end face of the packaging groove. Multiple sets of heat insulation cavities are arranged at equal intervals within the heat insulation layer. Multiple sets of bonding holes are arranged at equal intervals on the bonding layer. The inner frame is installed on the inner end face of the packaging groove via the positioning component. This utility model can reduce the impact of temperature conduction on the membrane electrode during hot pressing of the packaging frame, preventing localized damage to the membrane electrode and ensuring its performance and lifespan.

This application relates to a battery pack control method, system, electronic device, and readable storage medium. The method includes the steps of: obtaining the current current limit value of each battery pack, and determining a minimum current limit value among a plurality of current current limit values, wherein the current current limit value is the maximum allowable current value of the battery pack; determining the total current limit value of the battery pack charging and discharging equipment based on the minimum current limit value, wherein the total current limit value of the battery pack charging and discharging equipment is the maximum allowable sum of the current values ​​of each battery pack. By determining the total current limit value of the battery pack charging and discharging equipment through the minimum current limit value among a plurality of battery packs, the current limiting requirements of the battery pack with the smallest current limit value can be met to a certain extent, thereby avoiding excessively high actual current values ​​of the battery pack and ensuring battery pack lifespan.

The invention provides a combined control method and system for a plug-in hybrid electric vehicle and electronic equipment, and relates to the technical field of new energy vehicle power control. The method comprises the steps that whether the vehicle is in a large-load demand working condition or not is monitored; when the vehicle is in the large-load demand working condition, engine temperature information of the vehicle is obtained; if it is judged that the engine is in the cold start state according to the engine temperature information, a power system of the vehicle is controlled to enter a series drive mode, and the warm-up state of the engine is monitored; and when the warm-up state meets a preset warm-up completion condition, the power system is controlled to be switched to a parallel drive mode, so that the engine directly participates in driving wheels. According to the control method, the series mode control with the warm-up priority is carried out on the cold start engine under the large-load demand working condition, so that emission compliance and the service life of the engine are guaranteed, and the power demand and the energy efficiency are both considered.

The utility model relates to the technical field of automatic vending, in particular to an electromagnetic lock and a self-service vending device. The electromagnetic lock comprises a shell, an electromagnet, a spring bolt and an emergency part, the electromagnet is arranged in the shell and comprises a solenoid, an armature and a compressed spring, the armature is connected with the solenoid in an inserted mode and can move relative to the solenoid to have a first position and a second position, and the first end of the armature is in transmission connection with the spring bolt in the moving direction of the armature; when the armature is located at the first position, the armature drives the spring bolt to stretch out of the shell, when the armature is located at the second position, the armature drives the spring bolt to retract back to the shell, the armature is sleeved with the compressed spring and used for making the armature always have the trend of moving towards the first position, and the emergency piece is linear and extends in the moving direction of the armature. The first end of the emergency piece is connected with the second end of the armature, and the second end of the emergency piece extends out of the shell. According to the electromagnetic lock, the service life of the electromagnet is ensured, so that the service lives of the electromagnetic lock and the self-service vending device applying the electromagnetic lock are long.

The utility model discloses a kind of equal-diameter variable-pitch multistage roots vacuum pumps, relate to vacuum pump technical field.This kind of equal-diameter variable-pitch multistage roots vacuum pump, including pump body and motor, the pump body includes air inlet pipe and air outlet pipe, the pump body is rotatably connected with first rotating shaft and second rotating shaft, and the side wall of first rotating shaft and second rotating shaft is fixedly connected with rotor, the side wall of the pump body is fixedly connected with cooling tank, and the side wall of cooling tank is fixedly connected with liquid supply pipe and liquid return pipe.This kind of equal-diameter variable-pitch multistage roots vacuum pump, cooling liquid flow channel is arranged in first rotating shaft and second rotating shaft, and cooling liquid is circulated, can be very good cooling effect to rotor, guarantee its use effect and life;Impurities on the surface of filter screen are cleaned and collected simultaneously, and simultaneously, reciprocating knocking vibration can be carried out to the inner wall of filter screen, guarantee its filtering efficiency and effect, and then guarantee the use efficiency and effect of vacuum pump.

The utility model discloses a tungsten steel step type inner hole drill bit, including drill handle, drill body and setting cutting portion in front of drill body, the drill handle is used for with lathe main shaft connection, the drill body is the main body support structure of drill bit, its inside is equipped with cooling channel, the cutting portion includes fixed cutting tool bit and movable cutting tool bit, the fixed cutting tool bit fixed mounting is in the top of drill body, the movable cutting tool bit movable mounting is in the inside of drill body, the inside of drill body is provided with movable slot for installing movable cutting tool bit, is connected with tool bit removal control subassembly on movable cutting tool bit, tool bit removal control subassembly drives movable cutting tool bit and moves in movable slot radial movable to adjust cutting diameter. The utility model has realized to the one -time processing of step type inner hole, need not multiple replacement different specifications' tool, has greatly simplified the operation process, has improved processing efficiency.

The invention provides a lithium battery electrolyte production device which comprises a mixing tank, an electric heating device is arranged in the side wall of the mixing tank, a top cover is detachably arranged at the top of the mixing tank, a stirring shaft capable of vertically ascending and descending is arranged on the top cover, and a plurality of stirring shafts distributed around the stirring shaft are further arranged on the top cover. A stirring blade assembly is arranged on the stirring shaft, a turbulent flow disc arranged on the outer side of the stirring blade assembly in a sleeving mode is arranged on the stirring shaft, and a through hole matched with the stirring blade assembly is formed in the turbulent flow disc. According to the production device of the lithium ion battery electrolyte, the basic requirement for stirring and mixing treatment of the lithium ion battery electrolyte can be met, full mixing treatment of various raw materials can be achieved in the mode that horizontal stirring and vertical turbulent flow stirring are combined, and then the use requirements of people are met more fully.

The utility model discloses a corrugated board, which belongs to the technical field of corrugated boards and comprises a planar board body, a waved board body and a plurality of moisture-proof rods, the moisture-proof rods are uniformly distributed on two sides of the waved board body, the moisture-proof rods are adhered in waved recesses of the waved board body, and each moisture-proof rod is of a net structure. The interior of the moisture-proof rod is filled with a drying agent, and the surface plate body comprises a plate base layer, a moisture-proof film, a waterproof film, a wear-resistant layer and a mildew-proof layer; according to the corrugated board, by arranging the moisture-proof film and the waterproof film, the waterproof and moisture-proof performance of the corrugated board can be improved, moisture entering the corrugated board is reduced, by arranging the moisture-proof rods in the wave recesses of the wave board body, the moisture entering the corrugated board can be absorbed, the interior of the corrugated board is kept dry, and therefore the interior of the corrugated board can be prevented from being affected with damp, and the service life of the corrugated board is prolonged. By arranging the nano-silver ion antibacterial coating, the interior of the corrugated board can be prevented from mildewing, and the structure and the service life of the corrugated board are guaranteed.

A stator punching sheet of a water pump motor comprises a punching sheet main body, a plurality of winding grooves circumferentially arranged on the punching sheet main body and a shaft hole arranged in the center of the punching sheet main body, the inner wall of the shaft hole is provided with a plurality of elastic notches corresponding to the winding grooves in position, and the shaft hole is communicated with the middle parts of the inner ends of the winding grooves through the elastic notches; the outer edge of the punching sheet main body is provided with a plurality of elastic holes which are uniformly distributed along the circumference, and the elastic holes are located between the outer ends of two adjacent winding grooves; and a positioning structure corresponding to the position of the elastic hole is arranged on the peripheral surface of the punching sheet main body. The stator punching sheet of the water pump motor can effectively ensure that the adjacent stator punching sheets in the vertical direction are tightly attached after the stator punching sheets are laminated to form a stator core, and effectively ensures the performance of the stator core.

The invention discloses a screw supply device and brush head shell assembling equipment applying the same, and relates to the technical field of automatic assembling equipment. The screw supply device comprises a screw feeding mechanism, a conveying pipeline, a temporary storage module and a driving mechanism. The tail end of the conveying pipeline is provided with a stop valve for controlling the screws to enter the temporary storage cavity; a piston capable of moving up and down is arranged in the temporary storage cavity and moves synchronously with the screwdriver, and a closed air chamber with variable volume is formed between the piston and the inner wall of the temporary storage cavity; an elastic sealing and folding structure is arranged at the bottom of the temporary storage cavity. During working, the piston is pressed downwards to compress air in the air chamber, so that the posture of the screw is stable, and the contact between the screwdriver and the head of the screw is buffered through the air cushion effect; and then the screwdriver rotates and pushes the screw out for locking. The problems that due to conveying and locking rigid coupling of a traditional screw machine, efficiency is low, the tail end posture is not stable, and the head of a screw is prone to being damaged are solved, and high-stability, high-efficiency and high-quality automatic assembly is achieved.

The utility model discloses a kind of cloth spreading rollers, it is related to textile field, and its technical scheme main point is: including roller body, left spiral groove and right spiral groove are set on the outer circumferential wall of roller body, the groove bottom of left spiral groove and right spiral groove is equipped with a plurality of flexible strips, the groove bottom of left spiral groove and right spiral groove is equipped with a plurality of thread holes, fixed bolt is threadedly connected in thread hole, a plurality of limit pieces are further arranged in roller body, and limit piece gives the resistance of flexible strip to the center symmetry surface of roller body.The flexible strip is fixed on the roller body by the fixed bolt, so that people can replace flexible strip to ensure the service life of cloth spreading roller, without directly replacing whole roller, the number of flexible strip in two spiral grooves is multiple, so that only damaged flexible strip needs to be replaced, further increase the utilization of material, by setting limit piece, the resistance of flexible strip to the resistance of fabric reaction force can be given, so that the part of flexible strip away from thread hole is more stable.

The utility model discloses a functional all terrain vehicle high-safety integrated LED tail lamp. The functional all terrain vehicle high-safety integrated LED tail lamp comprises a tail lamp base, a tail lamp circuit board, a tail lamp middle cover and a tail lamp cover. The tail lamp base is fixed to a frame of the all terrain vehicle, a lamp panel mounting position is arranged on the tail lamp base, and the tail lamp circuit board is fixed to the lamp panel mounting position. The rear tail lamp middle cover is arranged on the rear tail lamp base in a buckling mode through a buckling structure and shields the rear tail lamp circuit board. The rear tail lamp lampshade is arranged on the rear tail lamp base through a buckling structure and shields the rear tail lamp middle cover, and the waterproof effect is achieved through the rear tail lamp lampshade. The sealing rubber ring between the tail lamp shade and the base is combined with the closed cavity formed by the buckling structure, so that water vapor and dust are effectively prevented from invading the internal circuit board, and the reliability and the long service life of the lamp under the severe working condition of the dune buggy are ensured.

The utility model relates to the technical field of tractors, and discloses a transmission system and a tractor. The input end of the hydraulic stepless speed change device is in transmission connection with the engine, and the section shifting clutch is arranged to be capable of selectively connecting the engine to the high-speed gear section shifting driving gear or the low-speed gear section shifting driving gear in a transmission mode. The first input end and the second input end of the first planetary gear mechanism are correspondingly in transmission connection with the output end of the hydraulic stepless speed change device and the high-speed gear section shifting driving gear respectively; the first input end and the second input end of the second planetary gear mechanism are correspondingly in transmission connection with the output end of the hydraulic stepless speed change device and the low-speed gear section shifting driving gear respectively; the rotating speeds of the first input end and the second input end of the first planetary gear mechanism are correspondingly the same as those of the first input end and the second input end of the second planetary gear mechanism respectively, and the output ends of the first planetary gear mechanism and the second planetary gear mechanism are in transmission connection to the driving wheel. The transmission system can avoid section changing impact, and impact-free section changing is achieved.