102 results about "Elastic collision" patented technology

The invention provides a method for modifying the surface of a metal material by adopting atmospheric-pressure cold plasma jet, and belongs to the technical field of material surface treatment. The method comprises the following steps that: high-energy electrons and particles which are contained in the atmospheric-pressure cold plasma jet generate non-elastic collision with water molecules and oxygen molecules which are contained in an atmospheric environment to generate an oxygen-containing active particle; and the oxygen-containing active particle generates chemical reaction with the surface of the metal material to introduce an oxygen-containing functional group to the surface of the metal material, wherein the cold plasma jet is generated by a cold plasma jet generator with the discharge form of bare electrode corona discharge. The method provided by the invention can realize the modification of a designated-position and large-size metal surface by controlling the size or motion locus of the cold plasma jet without complex vacuum equipment, is low in cost and easily and flexibly operated without pollution on the environment, is a green surface modification method and can be applied to the surface modification of various non-metal materials.

An improved type flywheel body design with a vibration damping attenuation device comprises a wheel rim (2), H-shaped spokes (2), screws (3), friction wafers (4), damping rings (5), a supporting muff (6), bolts (7), and a hub (8), wherein five H-shaped spokes are separated according to the same angle to weld with the hub, and are fixed with wheel edges through screws to form an improved flywheel body, two damping rings are fixed on small ten blocks which are separated by five H-shaped spokes on the internal diameter walls of the wheel edges, the two damping rings are fixed with the screws in a cantilever shape and are respectively arranged on the upper portion and the lower portion of the spokes, the relative space between the two damping rings are decided by the length of the supporting muff and are fixed through the bolts, the friction wafers are arranged between the damping ring and each spoke, and are bonded on the beam surface of the spoke to form a certain gap between the damping rings, and the size of the gap is decided by vibration acceleration value. When vibrated, elastic collision or friction is formed between the friction wafer and the damping ring, which reduces extraneous vibration, and the vibration damping effect is significant.

The invention relates to a nonlinear mixed rotary energy dissipation damper which comprises a venting hole, a damper shell, a horizontal connecting rod, a sealing ring, an annular rotary bearing, rotary steel plates, damping liquid, damping particles, a sleeve, a rotary thread, nonlinear spring dampers and a guide rail. Under the action of the rotary thread, the sleeve rotates around the sleeve axis, the rotary steel plates stir the viscous liquid and the damping particles in the damper, and damping force is provided. Under the action of an earthquake, the horizontal displacement is restrained through nonlinear springs or variable-friction dampers, the viscous liquid and the particles are placed in a container to serve as a main component of the damper, energy is dissipated under the driving of the rotary steel plates, and the energy dissipation efficiency is improved. The liquid serves as a filling substance, the noise generated by collisions between particles and the inner wall of an original particle damper can be better reduced, and meanwhile, the problems that as for the traditional particle damper, the particles in the particle damper are stacked together, so that the motion capacity of the particles is limited, most collisions between the particles and a cavity are elastic collisions, and the collision energy dissipation capacity is limited are solved to a certain extent.

The invention discloses a basketball washing device and a use method thereof. The device comprises a collecting box, a washing chamber, a drying chamber and a basket temporary storage chamber. A rail,a first conveying belt and a second conveying belt are arranged in the washing chamber, the movement directions of the first conveying belt and the second conveying belt are consistent, but the linear speeds of the first conveying belt and the second conveying belt are different. A pipeline is arranged on the side portion of the rail, and multiple sprayers are arranged on the pipeline. The collecting box is in a funnel shape, a cover plate is arranged on the collecting box, and a basketball delivery opening is formed in the cover plate. Multiple elastic collision assemblies are fixed to the inner wall of the collecting box, when a basketball enters the collecting box from the basketball delivery opening, the basketball is in repeated collisions and rebounding when encountering the elasticcollision assemblies, and attachments on the surface layer of the basketball can be removed. The method includes the steps of basketball patting delivery, basketball washing, basketball drying and basketball sterilizing. The basketball washing device and the use method thereof have the advantages of being complete in washing and high in washing efficiency and automation degree, saving time and labor and the like, and are especially suitable for basketball gyms and other occasions with more basketballs needing to be washed.

The invention discloses a sensorless elastic collision device and a sensorless elastic collision method based on an industrial robot. The sensorless elastic collision device comprises a system controldevice, a motor servo driving device and an industrial robot body. The sensorless elastic collision method comprises the steps of: performing self-learning on operating speed and current of the servomotor by means of the industrial, acquiring speed and current center curves, acquiring allowable deviation threshold values of speeds and currents corresponding to different stages, and determining whether the industrial robot collides through comparing the speed and current acquired in actual running with the speed and current center curves obtained through offline learning. During the collision, a controller of the motor servo device is switched from a position-speed-current three-loop control device to a composite control device, and a joint servo motor is driven to stop through providinga reverse control current and its rebound distance is controlled by utilizing a position feedback signal, thereby avoiding damage to the industrial robot and a collided object, and avoiding overload alarm generated by the servo driving device after the robot is repowered on since the tail end of the industrial robot is closely attached to the collided object.

The invention relates to a vertical viscoelastic collision tuning mass damper device, which comprises a case and a mass block, wherein the case consists of an upper cover plate, a lower cover plate, a left end plate and a right end plate; the mass block is arranged in the case, and comprises a rigid rod in horizontal arrangement, a prismatic mass block arranged in the middle part of the rigid rod, and ball-shaped mass blocks arranged at the two end parts of the rigid rod; viscoelastic materials are symmetrically arranged right above and under the ball-shaped mass blocks; dampers are respectively arranged between the upper cover plate and the upper end surface of the prismatic mass block and between the lower cover plate and the lower end surface of the prismatic mass block; a plurality of springs are also symmetrically arranged on the prismatic mass block and are respectively connected with the upper cover plate and the lower cover plate. The invention also relates to a work mode. The vertical viscoelastic collision tuning mass damper device can realize the passive conversion of different energy-consumption modes under different external excitation.

The invention discloses wrist type human body kinetic energy acquisition equipment which comprises an outer ring and an inner ring arranged inside the outer ring. The outer circumference of the inner ring is provided with coils in a winding mode, the inner circumferential wall of the inner ring forms an annular guide rail, at least one pair of sector magnets are placed in the annular guide rail, and each sector magnet is identical to the corresponding surface of the adjacent sector magnet in magnetic pole. An open annular elastic hoop is arranged in the inner circle of the outer ring, and the annular elastic hoop is provided with a charging module connected with the coils. The wrist type human body kinetic energy acquisition equipment is put on the limbs (including wrists or ankles) of a human, along with the swing of the limbs, the sector magnets placed in the inner ring generate elastic impact and carry out reciprocating motion along the annular guide rail constantly under the effect of gravity, the coils are made to generate induced electromotive force due to changing of magnetic flux, and therefore the kinetic energy in the human body swinging process is converted into electric energy. The electric energy generated by the coils is adjusted to suitable direct current electricity through the charging module and is stored in an energy storage device, or is output directly to carry out charging and / power supplying for other electronic equipment.

The invention relates to an active anti-collision device for a self-driving passenger vehicle, comprising a positioning base, a buffer protection layer, an elastic telescopic rod, a rotating drive mechanism, an ultrasonic distance measuring device, a laser distance measuring device, a pressure sensor, a displacement sensor, and an angle sensor And the control circuit, the positioning base is embedded in the outer surface of the front and rear of the car, the buffer protection is connected to the front surface of the positioning base through elastic telescopic rods, the pressure sensor is embedded in the buffer protection layer, the displacement sensor is installed on the positioning base, and the angle sensor is installed In the rotary drive mechanism, the ultrasonic distance measuring device and the laser distance measuring device are respectively slidingly connected to the side surface of the positioning base through slide rails. On the one hand, the invention has good distance measuring and positioning operation ability, which is helpful to improve the obstacle avoidance and anti-collision ability during vehicle operation; ability.

The invention relates to a collision type shape memory alloy energy consumer, mainly comprising a square steel cylinder, a shape memory alloy plate, a push-and-pull rod and steel elliptical cakes. The shape memory alloy of the invention is characterized in that: 7 shape memory alloy plates embedded at the upper part and lower part of the square steel cylinder evenly divide the interior of the square steel cylinder into 8 interval parts; 4 steel elliptical cakes similar to candied gourd strings are evenly distributed on the steel push-and-pull rod, and the 4 steel elliptical cakes are placed in 4 interval parts of the square steel cylinder; when the push-and-pull rod moves to and fro, non-perfect elastic collision between the steel elliptical cakes and shape memory alloy occurs, thus achieving the purpose of exchanging momentum and dissipating kinetic energy. The invention has the effects and benefits that the energy consumption capacity of the energy consumer is in direct proportion to amplitude thereof; when the amplitude is relatively low, every steel elliptical cake moves to and fro to consume energy in respective space thereof; when the amplitude is relatively high, the steel elliptical cake can enter adjacent interval parts to consume energy by collision; in the process, as deformation of the shape memory alloy plates is relatively large, relatively strong restoring force is generated.

The invention discloses a buffering device, and particularly discloses a breakage-proof buffering device for lump coal. The breakage-proof buffering device comprises a supporting seat, wherein a head shield is arranged on the supporting seat; a chute which is oblique downwards is formed below the head shield; and the chute is a circular-arc curved chute. The chute is the circular-arc curved chute, so that sufficient centrifugal force is generated by the lump coal through acceleration, and the lump coal can perform set curvilinear motion in a buffering device; meanwhile, a centripetal acceleration is generated under the action of composite force, so that the direction of the lump coal is changed, the friction surface of the lump coal along the buffering device is transferred, a free-fall motion is changed into a specific curvilinear motion, the moving speed of the lump coal is lowered greatly, and the collision time of particles is prolonged; and meanwhile, in a process when particles become static from moving, a tangential-velocity component is generated, full non-elastic collision is avoided, and the lump coal is effectively prevented from being broken.

The invention discloses an elastic collision type sealed electric plug, and aims to solve the problem that the existing air plug is powered on by means of pin connection, a female head is contacted with a male head by a tubular piece which is separated into two valves, thus the elasticity is relatively week, when the plug is plugged for many times, poor contact is caused, and the poor contact is random. The invention designs a novel elastic collision type sealed electric plug which is supported by a spring and the end face is contacted and conducted (especially a round end face is contacted and conducted). The electric plug is composed of a fixed plug and a movable plug; and contact devices of the fixed plug and the movable plug carry out reliable surface contact under the counterforce of a compression spring to complete a conductive function. In the elastic collision type sealed electric plug provided by the invention, the movable plug adopts the compression spring to support a touch head; when the fixed plug and the movable plug are connected and tightened, a part of the touch head beyond the contact end face of a moveable guide sleeve is inserted to a round hole of a fixed plug pin, and a cylindrical end face of the touch head is contacted with the bottom surface of the round hole of the fixed plug pin.

The invention discloses a centrifugal fan volute employing granular damping vibration attenuation. The centrifugal fan volute comprises a volute body, wherein the volute body is provided with an air inlet (4); a centrifugal fan (7) is arranged in the volute body and is driven by a motor (8). The centrifugal fan volute is characterized in that the volute body consists of an inner volute (1) and an outer volute (2); a vibration attenuation and noise reduction chamber is formed between the inner volute (1) and the outer volute (2) and is filled with damping vibration attenuation granules (6). According to the centrifugal fan volute, the chamber between the inner volute and the outer volute is filled with spherical granules, the non-elastic collision and the friction between the granules and between each granule and the wall of the chamber are caused by the vibration of the inner volute, the energy is consumed, and the aim of vibration attenuation is achieved; meanwhile, the radiation noise of the volute can be reduced. The centrifugal fan volute can be applied to the industrial fields of energy power, petrochemical industry, petrochemical industry and the like, and the field of national defense and military industry.

The invention discloses a method and device for predicting interaction among liquid drops absorbing a surfactant. The method comprises that when two second-phase dielectric liquid drops make face-to-face elastic collision when moving towards to each other and separate from each other after collision, the radii and collision speed of the two second-phase dielectric liquid drops are determined; a separation pressure in the face-to-face elastic collision process is determined according to the radii and collision speed of the two second-phase dielectric liquid drops; according to a convection-diffusion equation, an drainage equation, a generalized Young-Laplace equation and the separation pressure, a dynamic water application force in the face-to-face elastic collision process and the interface concentration and migration speed of the surfactant in the surfaces of the liquid drops are determined; and according to the dynamic water application force and separation pressure, a total action force between the two second-phase dielectric liquid drops is determined. Thus, the action force between two liquid drops and distribution and migration of the surfactant in the two-phase interface ina disperse medium with the surfactant can be predicted accurately.

The invention relates to a horizontal bidirectional visco elastic collision tuned mass damper system and a working method thereof. The horizontal bidirectional visco elastic collision tuned mass damper system comprises a hollow circular outer cylinder, an upper cover plate arranged above the hollow circular outer cylinder and a lower cover plate arranged under the hollow circular outer cylinder; a universal joint is arranged in the middle of the lower end surface of the upper cover plate; a circular visco elastic limiting device is arranged in the middle of the upper end surface of the lower cover plate. The horizontal bidirectional visco elastic collision tuned mass damper system further comprises a first cylindrical mass block and a second cylindrical mass block; the circle center part at the upper end of the first cylindrical mass block is hinged to the universal joint through a first rigid rod, and the circle center part at the lower end of the first cylindrical mass block is connected with the circle center part at the upper end of the second cylindrical mass block through a second rigid rod; the lower part of the second cylindrical mass block is positioned in the circular visco elastic limiting device; the first cylindrical mass block is also connected with the inner wall of the hollow circular outer cylinder through a plurality of springs. The horizontal bidirectional visco elastic collision tuned mass damper system provided by the invention is simple in structure and easy to realize and overcomes the defect that the damping effect of a TMD device is very sensitive to the frequency and has poor adaptability to different excitations.

The invention relates to a green leaf rocking machine as well as a green leaf rocking method of tea. The green leaf rocking machine comprises a machine frame, a rocking cage, a rotating door, a locking assembly and a driving control mechanism; the rocking cage is rotatably arranged on the machine frame; the rocking cage is provided with a feeding / discharging port and an accommodating cavity; the rotating door is arranged on the outer side of the rocking cage; a limiting hole is formed in the rotating door; the rocking cage can rotate relative to the rotating door to close the rotating door or open the feeding / discharging port; the locking assembly comprises an elastic collision bead lock and an electromagnetic switch; the driving control mechanism comprises a rotating driving device and a controller; and the rotating driving device is connected with the rocking cage to be used for driving the rocking cage to rotate. When the green leaf rocking machine is used for performing green leaf rocking on the tea, the electromagnetic switch and the elastic collision bead lock cooperate with each other under the control action of the controller and can realize that the rocking cage and the rotating door are locked correspondingly when the feeding / discharging port is exposed and when the feeding / discharging port is closed, so that the rotating door can be opened and closed automatically, the technological processes of feeding, discharging and rocking green leaves can be automatically controlled, and the production efficiency is improved.

The invention discloses a grain warehousing buffer device capable of reducing the grain breakage rate. The device comprises a shell, a rice outlet pipe, a buffer pipe, elastic collision assemblies, adischarge port and a base. The buffer pipe is arranged in the shell, the rice outlet pipe is mounted in the middle position of the upper portion of the shell, the upper portions of the two side wallsof the rice outlet pipe are fixedly welded to the inner wall of the shell, the base is arranged below the shell, the shell and the base are fixedly connected through a buffer device, and the dischargeport is welded to the lower surface of the buffer pipe. The device is characterized in that the elastic collision assemblies are staggered on the side wall of an inner cavity of the buffer pipe, andeach elastic collision assembly comprises an upper fixed base, a first elastic plate, a second elastic plate and a buffer cushion. Energy saving and environmental protection are achieved, the integrity of the grain diameter of rice can be guaranteed, meanwhile, compression and release of air can be achieved through impact force of the rice, cushion protection of rice particles is further achieved,and a large amount of energy is saved.

The invention discloses a radar collision triggering assembly and a cleaning robot. The radar collision triggering assembly comprises a radar driving board, a triggering button circuit board, a radar,an upper housing, a radar support, an elastic collision piece, a rotating shaft and a rotating shaft support; on the top surface of the upper housing, the rotating shaft support and the elastic collision piece are installed on the corresponding side faces of a radar mounting groove respectively, the triggering button circuit board is mounted on the back surface of the upper housing, a triggeringthrough hole runs through the middle of a button mounting groove and the top surface of the upper housing, and the edge of the radar support is provided with a squeezing bone site; the rotating shaftpenetrates through the rotating shaft support and the radar support, the elastic collision piece is assembled in an elastic collision piece mounting groove, and when the radar support is not hit by anexternal object, the elastic collision piece is used for controlling the squeezing bone site to suspend over the top surface of the upper housing through the radar support; when the radar support ishit by an external object, the radar support rotates around the axis of the rotating shaft, so that the squeezing bone site penetrates through the triggering through hole to squeeze a button contact on the triggering button circuit board.

The invention discloses a high-voltage electrical equipment insulation strength calculation method based on a gas decomposition product. The method comprises the steps of firstly, calculating a molecular structure S of gas charged into the high-voltage electrical equipment and an elastic collision and non-elastic collision reaction system R of the gas in a partial discharge process; then, according to the reaction system R, calculating an evolution law of the gas decomposition product under partial discharge; and finally, calculating the insulation strength (E / N) cr of the gas according to theevolution law of the gas decomposition product. According to the method, the problems that in the prior art, the non-equilibrium effect is not considered in the insulation characteristic research ofthe high-voltage electrical equipment, and particles with incomplete electron collision cross section data are ignored, so that insulation operation state evaluation and online monitoring of the high-voltage electrical equipment are inaccurate are solved.

The elastic collision buffer for automobile includes a piston fixed to the bumper and a hydraulic cylinder fixed to the automobile frame, and features that the hydraulic cylinder is one high pressure oil cylinder with oil cavity filled with hydraulic oil, and the oil cavity may be connected through high pressure oil pipe pressure accumulating cylinder filled with hydraulic oil to form one closed hydraulic system. By means of the closed hydraulic system structure, the high pressure oil cylinder is designed as one true great force í‹springíŒ and can convert most of the kinetic energy collision produces into the elastic potential energy of the hydraulic oil while converting the rest energy into heat. The entire damping process has prolonged í‹springíŒ deformation period, increased impulse action time and effectively reduced impact force. The elastic collision buffer can protect rider in side the automobile and the automobile from collision effectively.

Method for transferring rotation energy from an input shaft to an output shaft at a continuously variable transmission ratio, whereby direct or indirect energy transfer between the shafts by means of at least one elastic collision involving at least one switch unit capable of controlling energy transfer satisfying the conditions of operating whithout absorbing much energy, operating very fast, operating with minimal internal friction or wear and operating without using friction as a major part in how energy is transferred, combined with the use of at least one elastic unit and optionally the use of energy store units, whereby all three unit categories and units may independently be implemented using mechanical, hydraulic, pneumatic, magnetic or electronic means.

The automobile anti-collision device is installed in the automobile part susceptible of collision and consists of a bumper connected set on automobile casing, a piston connected to the bumper and pushing the medium inside the cylinder, a spring around the piston rod and a cylinder with several releasing holes and membranes installed. In case of collision, the anti-collision device converts the rigid collision into elastic collision and releases energy via the releasing holes to protect automobile and persons inside it.

The invention discloses a flexible anti-collision guardrail system of a sea-crossing bridge, and belongs to the technical field of road safety protection. The flexible anti-collision guardrail system of the sea-crossing bridge comprises protection assemblies arranged in a whole column and a first handrail used for connecting and fixing the protection assemblies, wherein air sac ejection assemblies are installed on the first handrail, each protection assembly comprises a cylinder body, an inner box which can rotate around each cylinder body is connected with each cylinder body in sleeving mode, an outer box is arranged around the exterior of each inner box, the box wall of each outer box is connected with each air sac ejection assembly through a rope body, and the air sac ejection assemblies are started for ejecting air sacs by rotating the outer boxes. The flexible anti-collision guardrail system of the sea-crossing bridge can achieve a buffer function when a vehicle strikes a guardrail, achieves elastic collision between the vehicle and the bridge guardrail, and effectively reduces harm and loss which are caused by rigid collision to the vehicle and passengers.

The device is a four-dimensional gyroscope, demonstrating the connection between the translational and the rotational inertia, which leads to the violation of the Momentum Conservation Law of the center of masses during its absolute elastic collision with the wall. For the proof of the violation of one of the basic Laws of Classic Mechanics the device is equipped with the scientific-research complex, that allows to observe double, triple, etc collisions of the four-dimensional gyroscope, as well as to perform comparison of the theoretical calculations with the experimental data.

The invention relates to the field of automobile parts, in particular to a scratchproof vehicular protection bar which comprises a bar body and cylinders. The cylinders are arranged at corners at the two ends of the bar body which is a U-shaped elastic rubber pipe, the cylinder is a round pipe made from elastic rubber, the bar body is provided with a rotating shaft, and the cylinder is sleeved on the rotating shaft. The bar body made from the elastic rubber pipe can transform hard collision into elastic collision, buffer impacting force and less pressure and shake, and the cylinder can transform inclined collision into followed rolling to greatly reduce the scratch rate of vehicles.

The invention discloses a rotary centrifugal force type pull driving device. The rotary centrifugal force type pull driving device comprises a bottom installation base plate. According to the rotary centrifugal force type pull driving device, the fast rotation ability of a driving motor is utilized to drive a plurality of parts to rotate and generate centrifugal forces, the centrifugal forces arefed and connected in parallel, the combined pull can be provided, the controllable pull is provided, quickness and effectiveness are achieved, moreover, the requirements for the sealing performance ofthe parts are low, so the parts are convenient to work, an annular-array elastic collision type rotating resistance control mechanism is arranged, the fracture of an internal steel wire rope due to rotation with excessive resistance is prevented, furthermore, a spiral spring elastic collision installation type supporting mechanism is arranged, an upward thrust can be generated, thus the working state of the parts is stabilized, in addition, a steel wire rope pull and connecting plate connecting type middle force conversion mechanism is arranged, and the pull of a plurality of steel wire ropescan be converted into the overall pull of a connecting plate.

The invention provides a gap-adjustable and rigidity-variable elastic micropowder particle collision damping device. By using the damping device, the aims that the collision process is visible, the collision gap ratio is adjustable and the collision rigidity is variable are achieved. The damping device provided by the invention comprises a base and a collision damper, wherein the base is used for supporting the collision damper, and the collision damper is used for absorbing vibration energy. The base comprises a base body and a sliding rail, wherein the base body is used for supporting the collision damper through the sliding rail and a spring device; and the sliding rail is detachably fixed on the base body and is used for slidably supporting the collision damper. The collision damper comprises a damper shell, at least one spring device, at least one piston body, a ball body and powder particles, wherein the damper shell is provided with a shell body with a round cross section and sealing ends at two ends; the ball body is arranged in the damper shell and is used for absorbing the vibration energy generated by collision among the sealing ends, the piston body and the powder particles; and the powder particles are arranged in a cavity together with the ball body and are used for absorbing the vibration energy when coming into collision with the ball body.

The invention provides a method for modifying the surface of a metal material by adopting atmospheric-pressure cold plasma jet, and belongs to the technical field of material surface treatment. The method comprises the following steps that: high-energy electrons and particles which are contained in the atmospheric-pressure cold plasma jet generate non-elastic collision with water molecules and oxygen molecules which are contained in an atmospheric environment to generate an oxygen-containing active particle; and the oxygen-containing active particle generates chemical reaction with the surface of the metal material to introduce an oxygen-containing functional group to the surface of the metal material, wherein the cold plasma jet is generated by a cold plasma jet generator with the discharge form of bare electrode corona discharge. The method provided by the invention can realize the modification of a designated-position and large-size metal surface by controlling the size or motion locus of the cold plasma jet without complex vacuum equipment, is low in cost and easily and flexibly operated without pollution on the environment, is a green surface modification method and can be applied to the surface modification of various non-metal materials.

The invention relates to a collision protection facility, in particular to a soft and elastic collision protection facility for a bridge pier on a water transportation channel. The facility comprises a pile foundation, a bearing table and a collision protection part, wherein the upper end of the pile foundation is leveled with a river bed, and the bottom end of the pile foundation is fixed on a hard layer; the lower end of the bearing table is fixed with the pile foundation, and the upper end of the bearing table is higher than a hundred-year riverway low water level; and the collision protection part sequentially consists of a collision protection table, a pipe bolt and a tire from inside to outside, wherein the lower end of the pipe bolt is fixed on the bearing table, and the upper end of the pipe bolt is fixedly connected with the collision protection table; and the tire is sleeved on the pipe bolt. Compared with the prior art, the facility has the following advantages: as the tire is provided, when the external force effect is suffered, the collision protection effect can be effectively achieved to protect the bridge pier from being collided and damaged, and ships and people also can be protected.

A mosaic elastic composite screen plate suitable for sieving of various kinds of vibrating screens comprises a framework, a crossbeam of the framework, a stringer of the framework and elastic sifting bars. The framework is a composite elastic framework formed by adhering polyurethane and 20-g steel plate, a plurality of blind holes are respectively provided on the inner side of the composite elastic framework for supporting the elastic sifting bars, through holes for allowing the elastic sifting bars to pass through are provided on the framework corresponding to the other side of the blind holes and on the crossbeam located at the middle section, and the elastic sifting bars are in clearance fit with through holes where the framework and the crossbeam penetrate. Because the screen plate is an elastic body, the elastic collision effect of the elastic sifting bars can be enhanced during the vibration process of the screen plate along with the screen body to accelerate the loosening and cutting of viscous and moist materials. The oscillation energy produced by the collision and the multi-degree-of-freedom position change of the sifting bars can prevent the screen plate from adhering the materials and being jammed in the cleaning process, thus greatly improving the screening efficiency.