222results about How to "Avoid pulling force" patented technology

The invention discloses an exciting device for testing dynamic property of an MEMS microstructure or micro-device and belongs to a minitype mechanical electronic system. A structure of the device comprises that: a microstructure to be tested is arranged on a crossed spring strip of the top part; the crossed spring strip is arranged on the top part of a sleeve by a bolt; piezoelectric ceramics, an upper connecting block, a steel ball, a lower connecting block and a pressure sensor are arranged inside the sleeve; the bottom of the piezoelectric ceramics is fixed on the upper connecting block; the top part is contacted with the crossed spring strip to change the thickness of an adjustable washer; the piezoelectric ceramics is pressed by the crossed spring strip; the pressure sensor is arranged on a base plate; and the base plate and the sleeve are connected by a bolt. The exciting device has the advantages that in normal environment the device can carry out excitation on the MEMS microstructure, can remove shearing force produced in the using process of the piezoelectric ceramics and effectively prolong the service life of the piezoelectric ceramics through exertion of certain pretightening force on the piezoelectric ceramics at the same time; and the device can measure the output force of the piezoelectric ceramics by the pressure sensor, thereby conveniently seeking a frequency response function of the microstructure and obtaining dynamic property parameters of the microstructure.

The invention discloses an independent tobacco cutting process and independent tobacco cutting equipment based on paper making method regenerated tobacco leaf processing characteristics. The process comprises the following process steps: opening a box, shoving tobacco leaves, loosening, regaining moisture, cutting, drying and mixing. The equipment comprises a box opening machine, a tobacco leaf shoving machine, a high-frequency-vibrating loosening machine, a moisture regaining machine, a cutting machine and a roller cut tobacco drying machine, wherein the mechanisms can be arranged and can operate alone or in combination through the connection by a material conveying and feeding mechanism. The process and the equipment can cut the boxed regenerated tobacco leaves independently according to the processing characteristics of the boxed regenerated tobacco leaves, thereby improving the effective utilization rate of the paper making method regenerated tobacco leaves, effectively retaining fragrance, improving visual quality, and making the prepared regenerated cut tobacco uniform in length and good in looseness so that the cut tobacco can be blended with other cut tobacco uniformly. The process and the equipment have high adaptability; meanwhile, according to the change in the form of supplied materials, 'three-step method' tobacco cutting adopted in the prior art is changed into one-step cutting with the same effect, the production efficiency is improved and the production cost is lowered.

The invention belongs to airflow silencers or exhaust devices of common machines or engines, and particularly discloses an exhaust pipe. The exhaust pipe comprises an exhaust pipe body. A positioningsupport is coaxially and fixedly connected to the inner wall of the exhaust pipe. A guiding rod is detachably connected to the positioning support. A sliding sleeve is slidably connected with the guiding rod. A rotary sleeve is coaxially and rotationally connected to an outer circle of the sliding sleeve. A blade is fixedly connected with the outer wall of the rotary sleeve. The free end of the blade abuts against the inner wall of the exhaust pipe body. The blade is provided with an adsorption mechanism for adsorbing moisture in waste gas. A cooling mechanism used cooling waste gas is arranged on the outer wall of the exhaust pipe body. A return mechanism used for driving the sliding sleeve to reciprocate on the guiding rod is arranged between the sliding sleeve and the positioning support. The problem that impurities are liable to attach to the inner walls of existing exhaust pipes is solved.

The invention relates to a device for continuously growing graphene at high temperature. The device comprises a seal cabinet internally provided with a vacuum chamber, a material discharging roller wheel, a material receiving roller wheel for coiling and receiving a foundation base, a heater, an air inlet mechanism and a vacuum pump set, wherein the foundation base is coiled on the material discharging roller wheel; the end of the foundation base penetrates through a vertical high temperature reaction chamber to be connected to the material receiving roller wheel; the vacuum pump set is used for providing vacuum reaction condition for the vertical reaction chamber; the air inlet mechanism is used for providing graphene growth reaction gas for the vertical reaction chamber; and the heater is used for providing temperature condition for the growth of grapheme. The equipment overcomes the problem that the continuous preparation of graphene growth is incompatible to high temperature, enables the growth foundation base to grow the graphene continuously and stably at high temperature, and realizes large-scale preparation of large-area uniform grapheme.

The invention relates to an automatic wire feeder comprising a conveying system and a pay-off system arranged on one side of the conveying system. The conveying system comprises a first column, a horizontal wire feeding roller set arranged on the first column, a conveying motor used for driving the horizontal wire feeding roller set, a conveying detection swing arm arranged on the first column and a photoelectric detection sensor, the photoelectric detection sensor is used for detecting the swinging position of the conveying detection swing arm and controlling the conveying motor to start according to the position of the conveying detection swing arm, a wire passing hole is arranged in the free end of the conveying detection swing arm and located under the horizontal wire feeding roller set, the pay-off system comprises a second column, a pay-off reel fixed on the second column through a pay-off spindle, a brake and a brake driving swing arm, the brake is fixed on the second column, one end of the brake driving swing arm is fixed to the second column through a rotating shaft, the other end of the brake driving swing arm is a free end which is provided with a horizontal wire passing wheel, and the brake driving swing arm swings up and down to enable the brake to tightly hold or release the pay-off spindle.

The invention relates to an automatic multi-wire feeder, which comprises a delivery system and a pay-off system, wherein the delivery system comprises a first upright post, a horizontal wire feeding roller group arranged on the first upright post, a first wire passing hole group arranged on one side of the horizontal wire feeding roller group, a delivery motor for driving the horizontal wire feeding roller group, a delivery detection oscillating arm arranged on the first upright post and a photoelectric detection sensor for detecting the oscillating position of the delivery detection oscillating arm to control the delivery motor to be started according to the position of the delivery detection oscillating arm; a second wire passing hole group is arranged at the free end of the delivery detection oscillating arm; the pay-off system comprises at least two pay-off devices; each pay-off device comprises a fixed shaft, a pay-off drum arranged on the fixed shaft in a sleeving way, a pay-off rod movably fixed at the top end of the fixed shaft and perpendicular to the fixed shaft and a sleeve arranged outside the fixed shaft and the pay-off rod in a covering way; threading holes are formed in the free ends of the pay-off rods; central axes of the sleeves are overlapped with those of the fixed shafts; wire outlets are formed in the central positions of the upper surfaces of the sleeves.

The invention discloses a transmission arrangement for half-feed-in type rice and wheat combine-harvester cutting platform which includes two-stages of speed reducing, the first stage being a chain drive, which is driven by intermediate gearing box and transitional drive shaft arranged on the housing through chains, the second stage being a belt drive which is driven by the transitional drive shaft and cutting platform power feed-in wheel through a belt. The invention can be applied to guarantee the stabilization cutting and transporting velocity for the harvesters.

The invention discloses medical cleaning equipment which comprises a box body, a supporting base, a circular ring, a screw, a rotating rod, a driving motor, fixing rods, casing pipes, pipe type springs and brushes. The supporting base is arranged on the inner wall of the bottom end of the box body, the circular ring is arranged above the supporting base, a first thread hole is formed in the circular ring in a penetrating mode, a screw is installed in the first thread hole, a spraying device is arranged on the inner wall of the top end of the box body and located above the circular ring, the rotating rod in the vertical direction is arranged in the box body and located near the circular ring, the driving motor is arranged on the outer wall of the bottom end of the box body, an output shaftof the driving motor vertically penetrates through the bottom wall of the box body upwards to be fixedly connected with the lower end of the rotating rod, the rotating rod is provided with the multiple fixing rods in the horizontal direction, one end of each fixing rod is fixedly connected with the rotating rod, the other end of each fixing rod is inserted into one end of the corresponding casingpipe, the other ends of the casing pipes are provided with the brushes, the fixing rods are wrapped by the pipe type springs, one end of each pipe type spring is fixedly connected with the rotating rod, and the other end of each pipe type spring is fixedly connected with the corresponding casing pipe.

The invention provides a large-span steel truss combined continuous beam structure. The beam structure comprises a concrete deck slab, two steel trusses, a side span fulcrum and a middle fulcrum; thesteel trusses comprise upper chord members and lower chord members, wherein a plurality of web members are connected between the upper chord members and the lower chord members; the upper chord members are of horizontal straight rod structures, an upper parallel-connection structure is arranged between the two upper chord members, and the concrete deck slab is connected with the upper chord members of the steel trusses; and the lower chord members are in parabolic shapes, a concrete bottom plate is arranged between the two lower chord members in a side span overall length area and a middle span negative bending moment area, and a lower parallel-connection structure is arranged between the two lower chord members in a middle span remaining area. According to the beam structure, a steel truss beam is adopted as main stressed structure, the concrete deck slab is combined with the upper chord members, the concrete bottom plate is arranged in the side span and main span partial areas and combined with the lower chord members, so that the light weight and high strength characteristics of a steel structure are fully exerted, the beam structure can adapt to larger bridge spans, the residual creep down deflection value of the combined beam is extremely small, and the structure total height of the combined beam is smaller than that of other concrete combined structure bridges.

The invention relates to a water leakage automatically protecting device of a solar water heater, which comprises a connecting pipe, a water cork, a free block, a pulley, a rope and a pore plate, wherein the connecting pipe comprises a circular bedplate, a big circular pipe and a small circular pipe; the big circular pipe and the small circular pipe are respectively sleeved with a big sealing ring and a small sealing ring; the big circular pipe is connected with a hot water storage tank through the big sealing ring in a socket joint and sealing way and is communicated with the hot water storage tank; the small circular pipe is connected with the inner pipe wall of a vacuum pipe through the small sealing ring in a socket joint and sealing way and is communicated with the vacuum pipe; one end of the water cork is fixed on the circular bedplate in the connecting pipe, the other end of the water cork is connected with one end of the rope, and the other end of the rope is connected with the free block through the pulley. When the vacuum pipe is broken to leak water, water in the vacuum pipe is directly communicated with air to lead the upper face and the lower face of the water cork to form the pressure difference, the water cork overcomes the pull force of the free block under the action of the water flow and the pressure difference and rapidly plugs on the circular bedplate so as to block the channel of the hot water storage tank and the broken vacuum pipe.

The invention discloses an automatic regulation and storage landscape pool with a sponge function. The landscape pool comprises a viewing pool, wherein a dark pool is fixedly arranged at the upper part of one side of the viewing pool; an overflow hole is formed in the upper end of one side of the viewing pool; a through hole is formed in one side of the viewing pool and is positioned below the overflow hole; the viewing pool communicates with the dark pool through the overflow hole and the through hole respectively; an inverted U-shaped pipe is fixedly arranged in the through hole in a sealingmanner; one end of the inverted U-shaped pipe is positioned at the bottom of the dark pool, and the other end of the inverted U-shaped pipe is positioned in the viewing pool; the other end of the inverted U-shaped pipe is fixedly connected with the upper end of a circular pipe; the other end of the inverted U-shaped pipe communicates with the circular pipe through a reserved opening. The landscape pool is simple in structure and ingenious in concept; the dark pool is arranged, so that rainwater can be stored; the stored rainwater is discharged by utilizing a siphon principle, so that a discharge pipeline is difficult to block; whether water is supplemented to the landscape pool or not is controlled by utilizing buoyancy; the landscape pool is of a pure mechanical structure, is more reliable and convenient to maintain, can meet market requirements and is suitable for popularization.

The invention discloses a pulling-rope diverter for inclination of a rope tower. The pulling-rope diverter comprises saddle bodies and rope-strand transition pipes connected by transition flanges, wherein wire distributing pipes arranged in the saddle bodies adopt raindrop-shaped wire distributing pipes; wire-distributing-pipe positioning plates are provided with raindrop-shaped holes; rope-strand guiding sections are arranged between the two ends of the saddle bodies and the transition flanges; each rope-strand guiding section consists of a saddle-body connecting flange, a wire-distributing-pipe transition plate, a guide pipe connecting flange, a guide pipe, a wire pipe, a wire pipe positioning plate and a guide pipe transition plate; the guide pipe is internally provided with the wire pipe positioned by the wire pipe positioning plate; one end of the wire pipe is respectively inserted into a pipe hole arranged on the wire distributing pipe transition plate; the pipe hole arranged on the wire-distributing-pipe transition plate corresponds to the raindrop-shaped hole arranged on the wire-distributing-pipe positioning plate; the wire-distributing-pipe transition plate is connected between the connecting flange and the guide pipe connecting flange; the other end of the wire pipe is inserted into the pipe hole arranged on the guide pipe transition plate at the end part of the guide pipe; and the guide pipe transition plate is arranged in the transition-section flange. The pulling-rope diverter disclosed by the invention has the advantage that the saddle bodies are anchored in the rope tower by adopting a manner of oblique intersection.

The invention relates to voltage transformer protection technology, specifically to a device for preventing reverse charging of a secondary side of a voltage transformer, and solves the problem that existing voltage transformer protection technology cannot completely prevent a reverse charging phenomenon from occurring in a voltage transformer. The device for preventing reverse charging of the secondary side of the voltage transformer includes a three-phase air switch, a first spring, a lock rod, a support, a lever, a top rod, a bimetallic strip, an electric heating element, a reverse charging release, an overcurrent release, an undervoltage release, and a second spring; a right end of the first spring is fixed to a first phase moving contact of the three-phase air switch; a left part side face of the lock rod is fixed to the first phase moving contact, a second phase moving contact and a third phase moving contact of the three-phase air switch; a right end of the lock rod is provided with a first hook-shaped part; a left end of the lever is provided with a second hook-shaped part which are in a clasp joint with the first hook-shaped part; and a right end of the lever is hinged to the support. The device for preventing reverse charging of the secondary side of the voltage transformer in the invention is suitable for a power grid.

The invention discloses a sitting type motor tricycle provided with pedals, comprising a vehicle frame, wherein the vehicle frame consists of a four-beam keel and a flat frame assembly, a rear compartment is arranged at the top of the rear side of the vehicle frame, the bottom of the rear side of the vehicle frame is connected with a rear axle assembly through a plate spring damping mechanism, a rear wheel is arranged at each of the left end and the right end of the rear axle assembly, an air inlet pipeline is arranged on the vehicle frame, and is used for an air cooling power device, a braking system is arranged on the vehicle frame, and is used to brake the rear wheels, a self-unloading device is between the flat frame assembly and the rear compartment, a dual-purpose structure used as both a backrest and a passenger seat is arranged, an electromechanical dual-purpose power device is adopted, and a front wheel is improved as a self-walking structure. The sitting type motor tricycle provided with the pedals disclosed by the invention has the advantages of firmness and durability, large loading capacity, more uniform distribution of loading capacity, good braking effect, comfort and safety for controlling a hand brake, saved labor force for the self-unloading, enhanced function of the backrest and improved safety and comfort as a front-fixed and back-movable plate spring damping structure is arranged, and has the functions of saving energy, protecting the environment, reducing emission and realizing continuous long-distance driving.

The invention discloses a drawer slide rail capable of preventing automatic opening of a drawer, which is a three-stage telescopic slide rail device capable of extending at three stages. The three-stage telescopic slide rail has the function of preventing opening under shaking. The slide rail comprises an outer rail, an intermediate rail and an inner rail, which are mutually superposed and fitted. Between the outer rail and the intermediate rail, and between the intermediate rail and the inner rail is disposed a slider bar equipped with a roll ball, respectively. A limiting structure for preventing detachment from each other is arranged on the outer, the intermediate and the inner rail, respectively. An elastic buckle seat capable of preventing opening under shaking is arranged at the bottom end of the inner rail, while a push-buckling part is correspondingly arranged at the inner end of the outer rail. For the furniture using the inventive slide rail, automatic opening under shaking can be prevented, by elastic buckling of the elastic buckle seat and the push-buckling part between the inner rail and the outer rail, in case of shaking during transportation.

The invention discloses a fixed-range pulling device for textile yarns, and belongs to the field of textile processing machinery and equipment. The outer side of a pulling belt is provided with a pulling rack, a pulling motor is in transmission connection with the pulling belt by adopting a transmission belt, a reciprocating guide plate is slidably arranged in a reciprocating guide rod, a pullingplate gear is in engaged connection with the pulling rack, a backward tension spring is horizontally connected between the reciprocating guide plate and a reciprocating base, the side, along a forwardstop lever, above the reciprocating guide plate is fixedly provided with a yarn supporting connecting plate, the ends of the upper and lower sides of a pulling bracket are horizontally and rotationally connected with a yarn inlet rotating roller and a yarn outlet rotating roller respectively, and a drafting assistance rotating roller is horizontally arranged between an upper drafting rotating roller and a lower drafting rotating roller. The fixed-range pulling device for the textile yarns has the advantages that the structural design is reasonable, pulling processing can be conducted on the textile yarns rapidly and stably, the horizontal pulling amplitude can be adjusted according to the types and specifications of the textile yarns, the automation degree of yarn pulling processing is improved, and the processing and use needs are met.

The invention discloses a foldable screen inward folding synchronous rotating mechanism and electronic equipment. The mechanism comprises first and base bases, first and second tooth frames and a synchronous transmission module; the synchronous transmission module comprises first and second shafts, first and second transmission wheels and first and second planet gears; the first and second shaftsare rotationally mounted on the first and second bases; the first transmission wheel and the first planet gear are synchronously mounted on the first shaft; the second transmission wheel and the second planet gear are synchronously mounted on the second shaft; the first and second transmission wheels are in transmission connection through a transmission mechanism; the back surfaces of first and second slide blocks of the first and second tooth frames are slidingly connected with first and second slide rail grooves through first and second arc surfaces; and the top surfaces of the first and second slide blocks are in engaged transmission connection with the first and second planet gears through first and second arc teeth. The mechanism can realize inward folding of foldable screens by 180 degrees to compensate the position offset caused by bending to guarantee stability of the foldable screens, and is simpler in structure.

An LED (light-emitting diode) bulb comprises a glass envelope, a stem, a plastic shell, an LED light source, a bulb cap and a group of LED light-emitting bars, wherein the top of a base of the stem is provided with a strip-shaped boss, an insulated central fixed column is upwardly extended from the center of the strip-shaped boss, the group of LED light-emitting bars are mounted on a first circuit board and a second circuit board, so that an LED light-emitting bar module is formed, the module is mounted on the strip-shaped boss and the central fixed column, and conductive copper foils are so arranged on the first circuit board and the second circuit board that the group of LED light-emitting bars are connected in series or in series and parallel, and the LED power supply supplies power to the group of LED light-emitting bars. The light-emitting bar module structure of the LED bulb can enhance the reliability of the LED bulb and prolong the service life of the LED bulb, the LED light-emitting bar module can be assembled alone in advance, consequently, mass production can be realized, the efficiency of production is increased, and the production cost is reduced.

The invention belongs to medical instruments and discloses a simple respirator capable of confirming and controlling the tidal volume. The simple respirator comprises a working barrel assembly, a balloon, a tube assembly and a mask. The working barrel assembly is composed of a piston barrel and a piston, wherein the piston barrel and the piston are matched; the piston barrel is made of transparent materials, the outer wall of the piston barrel is provided with scales, and the back side of the piston is connected with a tension spring. An inner cavity of the balloon is communicated with the piston barrel, and the balloon drives the piston to move through air pressure generated through compression or relaxation. The tube assembly comprises a neck tube, the back end of the neck tube is communicated with the piston barrel, a safety valve and an air inlet tube are arranged on the side wall of the neck tube, an exhaust one-way valve is arranged at the front end of the neck tube, and an air intake one-way valve is arranged on the air inlet tube. The mask is fixedly connected with the air outlet end of the exhaust one-way valve in the tube assembly through an exhalation valve. The simple respirator is compact in structure, small and flexible; the difference between the simple respirator and an existing simple respirator is small in operation method; the simple respirator is convenient to use, the tidal volume can be confirmed and controlled flexibly through the scale corresponding to the piston; the tidal volume can be adjusted at any time according to the needs in the process of salvage, and artificial respiration operation does not need to be stopped.

The invention discloses a classification garbage can with a garbage bag separation function. The garbage can comprises a garbage can body, wherein a conical hook rotary disc cavity is formed in the middle in the garbage can body, a classification rotary disc cavity is formed in the upper side of the hook rotary disc cavity in a communicating mode, a garbage bag cavity is formed in the lower side of the hook rotary disc cavity in a communicating mode, a main shaft penetrating through a circle center of the hook rotary disc cavity in an up-down mode is rotationally connected between the upper wall of the classification rotary disc cavity and the lower wall of the garbage bag cavity, and a classification rotary disc located at the inner bottom of the classification rotary disc cavity is fixedly arranged on the outer circle face of the main shaft. According to the garbage can, garbage bags thrown into the garbage can are thrown into different areas by recognizing colors of the garbage bags, the garbage bags are pressed on hooks through pressing plates, no matter how much garbage is loaded in the garbage bags, the garbage bags can be stably hung on the hooks, more use requirements are met, use reliability is guaranteed, and the bottoms of the garbage bags are cut through saw blades which continuously move up and down.

The invention consists of a floating ball and a sealed plastic case. A magnetic control switch is set in the plastic case. On the outer side of the top of the plastic case, there is a sliding way in which there is a plastic slider in which a magnet is sealed, which is made of NdFeB. The one end of plastic slider is connected with the plastic case through an elastic component, and anther end of it is connected with the floating ball through a connective band. There is a wire connected with the magnetic control switch, and is set in sheath. The plastic case is set under the liquid level, and the floating ball drags the plastic slider. When liquid level raises or drops, the floating ball drags the plastic slider to make its position change. At preset position, the slider overcomes the tensile force of elastic component, and changes the position of magnet to make the magnetic control switch act.