44results about How to "Eliminate dead spots" patented technology

The invention belongs to the field of video monitoring, and provides a rain wiper of a camera protective cover and a video monitoring system; the rain wiper comprises a substrate, a reflective optical coupler, a fixing frame, a sliding block, a connecting sheet, a guide rail, a driven wheel, a belt, a pinch roller, a belt wheel, a pressing sheet, a spring, a shell, a motor, a sealing rubber bar, a large rain wiper arm, a small rain wiper arm, a rubber bar clamping plate and a rubber bar; the connecting sheet and the sliding block are fixed together; the connecting sheet is used for clamping the belt; the sliding block is sheathed on the guide rail; the connecting sheet is connected with the large rain wiper arm; the large rain wiper arm is connected with the small rain wiper arm; the small rain wiper arm is connected with the rubber bar clamping plate; the rubber bar clamping plate is connected with the rubber bar; and the spring is further connected between the large rain wiper arm and the small rain wiper arm. In the invention, the structure such as a reflective optical coupler is adopted so that the work area is rectangular and the view window blind side splodge is effectively eliminated; and the belt torque is born on the motor shaft so that the damage rate of the rain wiper is reduced.

The invention discloses a single-phase permanent magnet brushless direct-current motor with auxiliary teeth and auxiliary windings. The single-phase permanent magnet brushless direct-current motor includes a stator and a permanent magnet rotor; the stator is provided with a plurality of stator main pole teeth and stator auxiliary pole teeth which are uniformly distributed along the circumference of the stator, wherein the stator main pole teeth and the stator auxiliary pole teeth are arranged at intervals; the total number of the tooth slots of the stator main pole teeth and stator auxiliary pole teeth is twice of the number of the poles of the permanent magnet rotor of the motor; the width of the stator main pole teeth is 1.55 to 2 times of the width of the stator auxiliary pole teeth; main tooth arc surfaces are formed at the roots of the stator main pole teeth; auxiliary tooth arc surfaces are formed at the roots of the stator auxiliary pole teeth; slot openings are formed between the main tooth arc surfaces of the stator main pole teeth and the auxiliary tooth arc surfaces of the stator auxiliary pole teeth; and the central line of each slot opening deviates from the central line of a corresponding stator auxiliary pole tooth by a certain angle. After the single-phase permanent magnet brushless direct-current motor of the invention is energized, a magnetomotive force F generated by stator current has voltage difference, and therefore, a dead point can be eliminated; and the starting instant magnetomotive force voltage difference can change with the magnitude of the controllable stator current, and therefore, the starting instant magnetomotive force voltage difference can be controlled, and the motor can be started smoothly without vibration.

The invention discloses a connecting rod piston type combustion chamber combined dead-center-free reciprocating internal combustion engine which comprises a shell, a connecting rod, a crank and a crankshaft. A cylinder is arranged in the shell, a piston head is mounted in the cylinder, an inner cavity and a piston pin hole are formed in the piston head, the piston head is hinged to the connecting rod through a piston pin which is matched with the piston pin hole, and the connecting rod is located in the inner cavity. Smoothness of the internal combustion engine can be effectively improved, and service life of the internal combustion engine is prolonged. The dead center distance with the top dead center position about 15-25 degrees of an original internal combustion engine is utilized, working stroke of an original conventional piston is elongated, and thrust area of the piston is increased, so that the internal combustion engine is ensured to output power under maximum pressure. The piston head, the piston pin and the connecting rod can act for power output at an angle more than 180 degrees, particularly power output with piston running top and bottom dead centers of crankshaft 180 degrees + piston block output thrust angle of crank angle 90 degrees more than and equal to crank angle 180 degrees. Dead centers are eliminated, and the connecting rod piston type combustion chamber combined dead-center-free reciprocating internal combustion engine further has the advantages of simple structure and simplicity in manufacturing.

The invention discloses a twin-horizontal-shaft concrete mixer for testing which comprises a cylinder, and two parallel stirring shafts which are horizontally arranged in the cylinder; the two parallel stirring shafts are connected with the slewing gear of a motor gearbox and provided with stirring vanes. The bottom of the cylinder is provided with two sink marks arranged at the lower part which the two stirring shafts are corresponding to; a discharge hole is arranged between the two stirring shafts; the lower part of the discharge hole is provided with a compass rotor; the discharge hole forms a tight fit with the rotor provided with a discharge passage. One end of the rotor is fixed with a push rod. Two push rod limit posts are arranged at the outside of the side wall of the cylinder. With the structure adopted, the two-horizontal shaft concrete mixer for testing of the invention has the advantages of simple structure, convenient operation, etc.

The invention discloses a front drive axle with a large steering angle, which comprises a front axle shell, wherein the front axle shell is integrally formed, two steering knuckle shells which are symmetrically distributed are fixedly arranged at two ends of the front axle shell, the inner rotation angle of a front wheel of the front axle shell is more than 50 degrees, the inner corner of the front wheel is the angle at which the trapezoidal arm in the steering trapezoid rotates when the front end of the front wheel deflects to the outer side of the drive axle to the maximum angle, the outer corner of the front wheel of the front axle shell is more than 40 degrees, the outer corner of the front wheel is the angle at which the front end of the front wheel deflects to the inner side of the drive axle to the maximum angle. The angle of rotation of the trapezoidal arm in the steering trapezoid is increased, so that the dead point in the steering process is eliminated by increasing the steering angle, the number of left and right steering turns of the steering wheel is consistent, the operability is improved, when the front drive axle is in a working state, when the driving oil rod is used for steering, when the vehicle turns, the tension spring is compressed under the action of impact force, thereby playing a role in buffering the driving oil rod and improving the stability of thedriving oil rod.

The invention discloses a piston type internal combustion engine for quickly passing through dead point through magnetic boosting. The piston type internal combustion engine comprises a cylinder, a piston, a connecting rod and a crank, wherein the end, hinged to the crank, of the connecting rod is provided with a magnet I; the connecting line of the N pole and the S pole of the magnet I is perpendicular to the connecting rod and is positioned in the plane of rotation of the crank; the inner wall of the cylinder is also provided with a pair of magnets II; when the connecting rod and the crank are collinear and the connecting rod is positioned at the position of an upper dead center, the pair of magnets II is positioned on the two sides of the magnet I and the connecting line of the pair of magnets II is collinear with the connecting line of the pole N and the pole S of the magnets I; when the polarities of the magnetic poles, on the side opposite to the magnet I, of the magnets II are the same and the crank starts to rotate from the upper dead center, the magnetic pole, on the same side as the linear speed direction of the crank, of the magnet I is reverse to the polarity of the magnetic pole of the oppositely arranged magnet II. The piston type internal combustion engine has a simple structure, and the relaxation time at the dead center is shortened, so that the purpose of improving the efficiency by shortening the energy consumption time as much as possible is achieved.

The invention discloses a condensing type white smoke removing system and method for flue gas slurry. The white smoke removing system comprises a desulfurization tower and a water cooling tower, wherein the desulfurization tower is sequentially provided with a slurry tank, a flue gas inlet, a heat exchange layer, a spraying layer, a demister and a flue gas outlet from bottom to top; the slurry tank is connected with the spraying layer through a pipeline; the pipeline is provided with a first water pump; the heat exchange layer comprises a plurality of heat exchangers; the plurality of heat exchangers are uniformly distributed on the cross section of the desulfurization tower; heat exchange pipes on each heat exchanger are arrayed in a matrix; the heat exchange pipes on adjacent layers in the vertical direction are distributed in a staggered manner; the heat exchange pipes are parallel to the cross section of the desulfurization tower; a water cooling tank is arranged at the bottom of the water cooling tower; a water inlet and a water outlet of each heat exchanger are connected with the water cooling tank through a pipeline and each pipeline is provided with a second pump. Accordingto the condensing type white smoke removing system, the modularized heat exchangers are arranged between an inlet flue of the desulfurization tower and the spraying layer on the bottommost layer anda space in the tower is sufficiently utilized; white smoke of flue gas is alleviated and even removed and the water consumption in a desulfurization process is reduced.

The invention discloses a reciprocating piston built-in chained connecting rod dead-point-free engine piston connecting rod set. The reciprocating piston built-in chained connecting rod dead-point-free engine piston connecting rod set comprises a piston and a connecting rod. The bottom of the piston is hollow, a movable sleeve is arranged in an inner cavity in the bottom of the piston and can axially move along the inner wall of the inner cavity, the movable sleeve is internally provided with a first fixing shaft, the small end of the connecting rod is hinged to the first fixing shaft, a stirring block is arranged at the side of the small end of the connecting rod, a groove or a pin hole is formed in the stirring block and located in one side of the first fixing shaft, one end of a push rod is arranged in the groove or the pin hole in a matched mode, the other end of the push rod is hinged to a second fixing shaft, and the second fixing shaft is installed in the inner cavity of the piston. The movable sleeve can do reciprocating movement in the inner cavity along the axis, and the piston guides for the movable sleeve. According to the reciprocating piston built-in chained connecting rod dead-point-free engine piston connecting rod set, the dead point of an engine can be fundamentally eliminated, energy consumption is reduced, and the loss of the piston connecting rod set and a crankshaft is reduced. Replacing is facilitated after abrasion, waste is avoided, heat dissipating is more convenient, strength is higher, and the running efficiency of the engine can be effectively ensured.

The invention relates to the field of engines, and particularly discloses a novel horizontal gear and gear rack engine which comprises a shell and an output shaft, and further comprises transmission parts, wherein the output shaft is rotationally and movably connected with the shell; at least two transmission gears are arranged on the output shaft in a sleeving manner; the central angle to which the area covered by gear teeth on each transmission gear corresponds reaches 150-180 degrees; the transmission parts are in one-to-one correspondence with the transmission gears; pistons are correspondingly arranged on two sides of each transmission part; each transmission part comprises two gear racks matched with the corresponding transmission gear, and the two gear racks are parallel and arranged relative to the corresponding transmission gear in an upper-lower symmetric manner; and during the work, at most one gear rack is meshed with the corresponding transmission gear. According to the above novel horizontal gear and gear rack engine, the gear and gear rack transmission mode is adopted; the problem about dead points existing in a conventional engine structure is solved; and the engineoutput efficiency is improved.

A process for drying resinous materials, comprising: delivering, by way of a plurality of resin channels, resin fluid comprising polymer and solvent into at least first and second steam channels (101) having within a flow of steam, the first and second steam channels (101) each receiving resin fluid from a plurality of resin channels, the first and second steam channels each (101) being received by a stage 1 manifold (121), the steam and resin being delivered under conditions so as to separate at least some of the solvent from the resin fluid; and collecting at least some of the polymer from the resin fluid.

The invention discloses a stator, and the stator comprises a stator core; the stator core is provided with at least one group of A-phase, b-phase, C-phase, a-phase, B-phase and c-phase which are arranged in sequence; each phase comprises at least two groups of pitches; and the stator further comprises element windings arranged in the pitches in a one-to-one correspondence mode, B-phase auxiliary windings wound on the A-phase, the C-phase and the B-phase auxiliary windings; the winding direction of the B-phase auxiliary winding is opposite to that of the adjacent b-phase element winding, and the B-phase auxiliary winding is wound on all the group pitches in the A phase at the same time; the winding direction of the A-phase auxiliary winding is opposite to that of the adjacent a-phase element winding, and the A-phase auxiliary winding is wound on all the group pitches in the C phase at the same time; and the winding direction of the C-phase auxiliary winding is opposite to that of the adjacent c-phase element winding, and the C-phase auxiliary winding is wound on all the group pitches in the B phase at the same time. By arranging the auxiliary winding on the stator, the cogging torque and the torque ripple of the permanent magnet brushless direct current motor with the stator can be reduced.

The invention relates to automatic steering equipment capable of removing connecting rod dead points. The equipment comprises a sliding block sliding device and a torque transmission device which adopt a bilaterally symmetrical structure, wherein the sliding block sliding device comprises an outer frame and winding group structures; the torque transmission device comprises clutches, a speed reducer, a horizontal shaft, a right-angled helical gear and a perpendicular shaft; sliding blocks are taken as driving parts of a mechanism, when three connecting rods are driven by the sliding blocks at two ends, the dead points can appear inevitably when the connecting rods are in a straight line and then folded, as a result, the sliding blocks cannot return and move, and the equipment is blocked now. The equipment is improved for the dead points of the three connecting rods, so that the sliding blocks slide in a barrier-free manner and turnover directions can be decided.