74results about How to "Smooth shock" patented technology

The invention relates to a hybrid drill bit for petroleum, natural gas and geological drilling. The hybrid drill bit comprises a drill bit body, wherein a cutter wing and a roller cone are arranged on the drill bit body, cutting teeth are arranged on the cutter wing, the roller cone is connected with the drill bit body through a cone leg, and the hybrid drill bit is characterized in that the roller cone is a disk type roller cone. A cutting element on the disk type roller cone is shaped like a disk cutter or an intermittent disk cutter. The patent disclosed by the invention has the beneficial effects that, 1) the scraping motion of a diamond drill bit and the rolling motion of a disk type roller cone drill bit are combined for realizing precrushing at the bottom of a well, thereby ensuring that the diamond cutting teeth can effectively bite rock, eliminating the stick-slip phenomenon of the drill bit in some special formations and the probability of impact disrepair of a polycrystalline diamond compact (PDC) and improving the cutting efficiency and the mechanical drilling speed of the drill bit; and 2) the disk type roller cone can realize the precrushing of a rock layer at the bottom of the well more steadily, reduce the impact on the PDC, enhance the stability in drilling of the drill bit and enable the drill bit to realize faster and more stable drilling.

The invention discloses ultrasonic compound vibration polishing equipment. The ultrasonic compound vibration polishing equipment comprises a base and a stand column arranged on the base, a polishing tank mechanism is arranged on the upper end face of the base, and a workpiece clamping mechanism capable of vertically moving along the stand column is arranged on the stand column; the polishing tankmechanism comprises a polishing tank and a stirring mechanism arranged in the polishing tank; the workpiece clamping mechanism comprises a clamping jaw mechanism and a clamping jaw vibration mechanismconnected with the clamping jaw mechanism; fine abrasives are contained in the polishing tank; the workpiece clamping mechanism can move downwards along the stand column, the clamping jaw mechanism clamps a polished workpiece to stretch into the polishing tank to vibrate under driving of the clamping jaw vibration mechanism, and the stirring mechanism stirs the fine abrasives to polish the polished workpiece; and a plurality of ultrasonic vibrators are arranged at the bottom of the interior of the polishing tank. According to the ultrasonic compound vibration polishing equipment, the to-be-machined workpiece does high-speed longitudinal reciprocating vibration, an abrasive suspension in the polishing tank rotates, the abrasive suspension generates longitudinal high-frequency vibration through an ultrasonic generator, therefore, workpiece machining is achieved, and fine machining on the workpiece surface can be economically achieved.

The invention discloses an impact-free rectangular plate piezoelectric micro-motor. The impact-free rectangular plate piezoelectric micro-motor comprises a stator and a rotor, wherein the stator is a rectangular base plate which has at least two piezoelectric sheets on the surface thereof; a through hole surrounding the rotor is formed in the rectangular base plate; an excitation signal used for driving the impact-free rectangular plate piezoelectric micro-motor is uploaded between the rectangular base plate and the surfaces of the piezoelectric sheets which are disconnected with the rectangular base plate; and the excitation signal enables compound vibration of first-order longitudinal vibration and second-order bending vibration generated by the stator to form traveling waves on the surface of the through hole, so that the surface of the through hole can drive rotation of the rotor through a friction force. According to the impact-free rectangular plate piezoelectric micro-motor, as second-order travelling waves are excited on a driving surface by utilizing the longitudinal and bending compound mode of the base plate and the rotation of the rotor is driven by utilizing friction, the impact force is removed. The impact-free rectangular plate piezoelectric micro-motor can work steadily, so that an effect of steady driving is obtained.

A downwind wind turbine blade system with angular displacement adjustable blades comprises a wind speed sensor, a controller, a hub, blade main bodies and executing mechanisms, wherein the wind speed sensor is arranged outside an engine room close to a wind side, the controller is installed in the engine room and is electrically connected with the wind speed sensor. The hub is installed outside the engine room far from the wind side. The blade main bodies are connected with the hub through a rotating shaft. The executing mechanisms are arranged on two sides of the rotating shaft and connected with the rotating shaft. The executing mechanisms are electrically connected with the controller. The wind speed sensor is used for transmitting speed signals to the controller. The controller gives instruction to command the executing mechanisms to unlock the rotating shaft and then drives the rotating shaft to rotate. The blade main bodies connected with the rotating shaft rotate synchronously along with the rotating shaft at the same angle to achieve the purposes of closing up following the wind or stretching against the wind. Along with changes of wind speed, several angles can be set so as to avoid instability of the blades caused by continuous rotation. The downwind wind turbine blade system with the angular displacement adjustable blades is capable of reducing energy capture of a wind driven generator when the wind speed is high, ensures that the wind driven generator works close to a nominal parameter, thereby enlarging the application range of the wind speed of the wind driven generator.

The invention relates to a centrifugal bionic coupling pump, belonging to various fields such as the fluid machinery. The impeller of the pump adopts the combination of a bionic coupling impeller and a common pump shell, the combination of a bionic coupling pump shell and a common impeller or the combination of a bionic coupling impeller and a bionic coupling pump shell, wherein the bionic coupling impeller or the guide vane in the bionic coupling pump shell is provided with bionic unsmoothed structures; the bionic unsmoothed structures are rib-shaped or pit-shaped, the rib-shaped or pit-shaped unsmoothed structures are distributed along the impeller passage and the guide vane in the pump shell correspondingly; the cross section of each rib is a regular triangle with the side length of 0.5-1.3mm, the distance between the ribs is 0.5-3.9mm; and the pit radius of each pit-shaped structure is 0.5-1.3mm, and the distance between the pits is 0.5-3.9mm. The centrifugal bionic coupling pump solves the problems of the existing centrifugal pump that the efficiency is low, the cavitation phenomenon is easy to generate, etc. The performance of the centrifugal pump can be improved and the efficiency and delivery lift of the centrifugal pump can be increased.

The invention relates to the technical field of chassis, in particular to a multi-link suspension and its vehicle assembly. The multi-link suspension includes: a leaf spring, a sub-frame and two sets of link assemblies; two sets of link assemblies are arranged on both sides of the sub-frame respectively; The bottom is arranged in sequence, and the leaf spring connects the two sets of connecting rod assemblies. The multi-link suspension solves the technical problem that there are many links and a large space is occupied in the height direction.

The invention discloses a differential elevation high dumper which essentially consists of elevation drive devices, a steel structure elevation support and a factory building combination, an elevation steel wire rope, a round rolling cage, a mine car, a counter weight, a friction wheel, a drive shaft, a gear box and a motor. The invention is characterized in that two elevation drive device are symmetrically arranged above the support. The elevation steel wire rope winding the friction wheel for three rounds can equally load the weight of the round rolling cage and that of the mine car body on both ends of the elevation steel wire rope by the counterweight, and produce tension and friction drive, which is one of the functions. Because both ends of the steel wire rope are equally loaded, the complete dumper starts to run, only net weight of the bulk materials in the mine car needs to be considered for the power of the motor. Therefore, the energy saving of the invention is obvious, which is the second function. The cycle process including starting, accelerating, constant-speed, differential, decelerating running and stopping to reversely run of the two sets of elevation drive devices are electrically and logistically controlled.

The invention discloses a sensorless control device for an AC permanent magnet synchronous motor and a starting method of the control device. The control device comprises a DC power supply providing DC, wherein the DC power supply is connected with a three-phase inverter bridge, and the output end of the three-phase inverter bridge is connected with a permanent magnet synchronous motor; the three-phase inverter bridge and the permanent magnet synchronous motor are also connected with a DSP (Digital Signal Processing) control board for acquiring current and voltage signals and modulating PWM (Pulse Width Modulation) signals, and the DSP control board is connected with a touch screen for displaying permanent magnet synchronous motor parameters and adjustment functions. The sensorless starting method comprises the following steps of: starting, initializing, configuring a register, configuring software parameters, loop-waiting, executing an interrupt routine and returning. In the invention, the permanent magnet synchronous motor can be quickly started by an I-F vector control mode, the motor is smoothly switched to a speed and current double closed-loop vector control mode by a switching method, and the switching process is smooth without current surge.

The invention discloses an impact fatigue test device which comprises a bearing unit, a first impact unit, a second impact unit and a crankshaft transmission unit which are sequentially arranged in a first direction. A bearing table of the bearing unit is used for placing a target object, the bearing unit is elastically connected with the first impact unit, and the first impact unit is in sliding connection with the second impact unit. Then one transmission shaft of the crankshaft transmission unit is inserted into the second impact unit, and the other transmission shaft of the crankshaft transmission unit is connected with a driving unit. Therefore, the impact fatigue test of the target object is completed, and the reliability of test data is improved. The technical problems that in an existing impact fatigue test device, due to the fact that an impact transmission mode based on a pendulum bob, an impact hammer, or the like is utilized, the impact cycle frequency is low, and the occupied space of the device is large are solved.

The invention belongs to the technical field of bulletproof helmets, and particularly relates to a bulletproof helmet with a composite rigid reinforced lining layer implanted. The bulletproof helmet comprises a bulletproof helmet shell, the composite rigid reinforced lining layer and a hanging system; the composite rigid reinforced lining layer is fixed to the inner surface of the bulletproof helmet shell, the hanging system is fixed to the edge of the composite rigid reinforced lining layer, the bulletproof helmet shell is formed through compositing of fibers and thermoplastic base resin, thecomposite rigid reinforcing lining layer is formed through compositing of carbon fibers and a thermosetting resin base, and the composite rigid reinforced lining layer is of a hollow mesh structure.The fiber composite resin is used for preparing the helmet, the composite rigid reinforcing lining layer is arranged to be of the hollow mesh structure, the uniform and stable rigid supporting is provided for the inner surface of the bulletproof helmet shell, stable rigidity after bullets impact the helmet shell is ensured, and the phenomenon that large back protruding deforming is generated in the helmet shell, and the head of the human body is hurt in an impact manner is avoided.

The invention discloses a floor drain. The floor drain comprises a body, a rotor sleeve and a storage battery. A cavity is formed in the body, a flow guiding hole is formed in the middle of a partition plate in the cavity, a sealing cap with a spherical face is formed in the upper end of a stator core, and a blinded hole is formed in the lower end of the stator core. A guide column is arranged at the bottom of the cavity and extends into the blind hole. The stator core is sleeved with the rotor sleeve, and the rotor sleeve and the stator core are configured into an electric power generator. At least one spiral guide groove is formed in the outer wall of the rotor sleeve so that a spiral channel can be defined by the outer wall of the rotor sleeve and the cavity wall of the cavity; in this way, when water flows through the spiral channel, the rotor sleeve is driven by water to rotate, and the electric power generator serves as a power generator to charge the storage battery; a spring is arranged between the upper end of the guide column and the bottom of the blind hole, and the sealing cap seals the flow guide hole with certain pre-tightening force through the spring. According to the floor drain, the rotor sleeve rotates when water flows through the spiral channel, and power is generated accordingly. Deodorization can be prevented through cooperation of the sealing cap and the spring on the premise that water drainage is not influenced.

The invention discloses a direct hydraulic turbine generator, which comprises a pipeline, a water turbine and a stator component, wherein the stator component is arranged on the inner wall of the pipeline, the water turbine is arranged in the inner cavity of the pipeline in the axial direction of the pipeline, the axial line of the water turbine is superposed with the axial line of the inner cavity of the pipeline, and a plurality of permanent magnets are uniformly distributed along the peripheral circumference of the water turbine, so that the stator component can cut magnetic induction lines of the permanent magnets when the water turbine rotates. According to the direct hydraulic turbine generator disclosed by the invention, the water turbine and a generator rotor are combined together, the structure becomes more compact, all transmission devices can be omitted, not only is the manufacturing cost greatly reduced, but also higher power generation efficiency can be obtained; a water guide mechanism is simpler in structure, the device needs to be wholly arranged in water, the whole device does not need to be sealed wholly, so the structure is compact. The direct hydraulic turbine generator is suitable for power generation in rivers, oceans and advective water environments, and the power generation efficiency is high.

The invention provides an anti-rollover vehicle and a suspension system thereof, which relate to the technical field of vehicle safety, and have the advantages of simple structure and high reliability. The anti-rollover vehicle comprises a suspension system, including an elastic element and a damping element, and a locking structure for locking a suspension. The locking structure comprises a hydraulic cylinder, including a cylinder body and a piston rod, one of which is connected to a vehicle rack and the other of which is connected to a vehicle wheel. The cylinder body is provided with a rodchamber and a non-rod chamber, communicated through a connection path. The connection path is connected to an energy-storing machine through a control path, and the control path is provided with a control valve for controlling the connection and disconnection. When the vehicle rolls over, the hydraulic cylinder can be controlled. Due to the incompressibility of hydraulic oil, the pressure of hydraulic oil in the hydraulic cylinder can be quickly changed, and the force for resisting the further deformation of the suspension can be generated, and thereby vehicle rollover can be resisted, and safe driving of the vehicle can be ensured.

The invention discloses a metal continuous punching die. A bottom plate, a die body, a punching plate and a fixing plate are included. The die body is arranged at the top end of the bottom plate. Discharging structures are arranged at the two ends of the outer wall of the die body. The fixing plate is arranged at the bottom end in the die body. Stable structures are arranged on the two sides of the top end of the bottom plate. Connecting rods are arranged at the bottom end of the top plate. Damping structures are arranged at the bottom ends of the connecting rods. The punching plate is arranged at the bottom ends of the damping structures. Through the arrangement of the stable structures, when the die needs to be punched, an external power source is conducted at the time, a servo motor isstarted and drives a rotation rod to rotate, the rotating rotation rod makes screws rotate through a belt, drive blocks can slide on the screws up and down, and accordingly the metal punching effect is achieved; and under the action of the two screws, a more stable effect can be achieved during impacts.

The invention relates to an electric vehicle brake control device. The electric vehicle brake control device comprises a front wheel brake, a rear wheel brake, a left brake handle and a right brake handle and is characterized in that the rear wheel brake is provided with an electronic auxiliary brake device, the left brake handle is connected to the front wheel brake through a brake line and provided with an electronic auxiliary brake signal switch which is connected to a controller of the electronic auxiliary brake device of the rear wheel brake through wires, a brake block comprises the following components including chromic oxide, aluminum powder, copper scraps, intermediate super abrasion furnace black, phenolic resin, barium sulfate, glass fiber, mica, natural rubber, an anti-aging agent, an accelerator, sulfur, zinc oxide, stearic acid and high aromatic oil, and the weight percentage of the components according to a formula is shown in the description.

The invention discloses a corrugated roller of a corrugated structure with functions of decreasing the paper gram weight and not lowering the paperboard strength, and relates to a corrugated roller for processing corrugated paperboards. The corrugated roller is characterized in that a second corrugated top arc r2 is introduced into a corrugated top arc of the corrugated roller of the corrugated structure. According to the corrugated roller of the corrugated structure, the service life of the corrugated roller can be greatly prolonged; the stress and impact conditions of corrugated core paper during engaged forming are improved, the corrugated core paper makes wider and continuous gentle contact with the corrugated top arc, and the damage during forming is lowered; the corrugated contact condition is improved, the tension factor in an engaged region is decreased, and the damage to the corrugated core paper due to ever-increasing tension in the engaged region is lowered; the corrugated roller is well positioned, and deviation and vibration are lowered; the corrugated waist length of corrugated paper is increased, and the paperboard is firmer; the paper using amount of the corrugatedroller is decreased; under the premise that adhesive consumption is unchanged, a bonding region is wider, and bonding is more effective; the paperboard indentation condition is obviously improved; andas for the corrugated core paper with the low gram weight, the corrugated roller of the corrugated structure has the better beneficial effects.

The invention discloses a self wind-resistant type agricultural greenhouse. The self wind-resistant type agricultural greenhouse comprises a greenhouse skeleton and a greenhouse protective film, wherein the greenhouse skeleton is of an arch-shaped structure; the greenhouse protective film is attached to the outer surface of the greenhouse skeleton; at least one transverse rod is arranged in the greenhouse skeleton along the radial direction; each transverse rod is arranged along the horizontal direction, and both ends of each transverse rod are respectively fixedly connected with the inner walls of the two sides of the greenhouse skeleton. The self wind-resistant type agricultural greenhouse has the advantages that by arranging air ventilating windows, the air ventilating and exchange canbe performed on vegetables in the agricultural greenhouse, the temperatures and humidities inside and outside the agricultural greenhouse can be respectively balanced, the generation degree of diseases and pests is reduced, and the burn damage to plants due to overhigh temperature in the agricultural greenhouse can be prevented; because a blocking plate is arranged at the inner wall of each air ventilating window, when the strong wind is blown to each air ventilating window, according to the Bernoulli effect, a relatively lower-pressure area is formed between each blocking plate and each air ventilating window because of higher air speed, each blocking plate overcomes the tension movement of a tension spring, the spacing between each blocking plate and each air ventilating window is reduced, and the volume of air entering the agricultural greenhouse is reduced.

The invention belongs to the field of unmanned aerial vehicle, and particularly relates to a fixed-wing unmanned aerial vehicle. The fixed-wing unmanned aerial vehicle comprises a body, a front landing gear mechanism, a first rear landing gear mechanism and a second rear landing gear mechanism, wherein the body belongs to the existing unmanned aerial vehicle body. The fixed-wing unmanned aerial vehicle has the advantages that when the first rear landing gear mechanism and the second rear landing gear mechanism of the unmanned aerial vehicle fall to the ground in advance and begin sliding, impact to the first rear landing gear mechanism and the second rear landing gear mechanism accelerates the rotation of rear sliding wheels of the first rear landing gear mechanism and the second rear landing gear mechanism; the improvement of the lift force of two fixed wings buffers the impact to the first rear landing gear mechanism and the second rear landing gear mechanism by the ground; when thefront landing gear mechanism on the aerial vehicle is in contact with the ground, impact to the front landing gear mechanism by the ground momently accelerates the rotation of a front sliding wheel ofthe front landing gear mechanism, so that the phenomenon that the inconsistent speed of the front sliding wheel and the rear sliding wheel of the unmanned aerial vehicle causes turning over cannot occur.

The invention discloses an outdoor charging pile conveniently used at night. The outdoor charging pile conveniently used at night comprises a base box, equipment boxes, charging columns and a crossbeam arm. Fixing nails are installed on the two sides in the base box. Telescopic plates are installed in the equipment boxes. Each electromagnet is fixed to one end of one telescopic plate. Charging guns are installed on the outer surfaces of the charging columns. Connecting heads are installed above the charging guns. A baffle is installed in the middle in the crossbeam arm. The crossbeam arm is located above the charging columns. Telescopic arms are installed on the two sides in the crossbeam arm. Rotation wheels are installed in the telescopic arms. Motors are installed in the rotation wheels. The positions below the rotation wheels are connected with iron rolling shafts through rainproof cloth. By the adoption of the outdoor charging pile conveniently used at night, rainwater and dew canbe effectively prevented from affecting the charging pile, the service life of the charging pile is prolonged, and the connecting positions of the charging guns and charging grooves of automobiles are unlikely to be wet.

The invention discloses a solar energy and air energy composite aircraft. When the solar energy and air energy composite aircraft turns and slows down, a joint bearing drives an action shaft to swingcircumferentially; a horizontal thrust is applied to a second piston; a damping spring is driven to absorb pressure brought by the second piston; meanwhile, the second piston transmits pressure to a first air cylinder; the first air cylinder is driven to extrude internal air towards a direction of a first piston to slow down an impact; the first air cylinder located on the opposite side of an aircraft body sucks the air through a damping control valve; and a separation speed of the first air cylinder and the first piston is reduced, and then rebound vibration of the damping spring after absorbing pressure is inhibited so that when the aircraft steers and decelerates, the impact of the inertia of a load on the aircraft body can be reduced, and the aircraft can stably fly.

The invention relates to a tunnel shotcrete non-dismantling formwork comprising anchor bolts and a section steel support. The anchor bolts are fixedly connected to the section steel support. A reinforcing mesh is disposed on one rock side of the section steel support; a rapid and convenient reticulated permanent formwork is spread outside the reinforcing mesh. during the application of the tunnel shotcrete non-dismantling formwork in form shot concreting of an adverse geological tunnel segment, setting up a construction bent is not required, fewer constructors are needed, fewer devices are input, construction cycle is effectively shortened, landslip is effectively avoided, landslip treatment cycle is greatly shortened, and construction cost is saved. The tunnel shotcrete non-dismantling formwork is simple in structure, allows firmness of supporting, is well stable and can bear stable shock of a wet-concreting trolley in concrete shooting; the problem of rebound is solved, landslip treatment time is shortened, construction safety is ensured, and technical indicators of shotcrete can be guaranteed.