37results about How to "Will not work" patented technology

The invention provides an engineering nonlinear vibration inspection method. The method adopts a wavelet nonlinear threshold value filtering wave to filter wide-frequency background noise of a three-direction acceleration signal and to remove DC bias so as to get the treated acceleration signals after frequency domain filtering and removal of trend term. Then speed signals and displacement signals are obtained after the acceleration signals is subject to a first time and second time integrals and removal of trend term. The characteristics and types of the nonlinear vibration are determined through a three-dimensional phase space diagram and other calculations of a reconstructed phase space tested by the three-dimensional phase space diagram. The invention adopts three-direction low resistance piezoelectricity acceleration meter to measure the vibration accelerations of three orthogonal directions. The invention has convenient installation, easy usage and reliable analysis, overcomes the problems of drifting, delay and aberration of the actual acceleration signals after passing through analog integration or digital integration. The invention plays an important role in the engineering nonlinear vibration inspection for mechanical mechanisms, bridges, dams and buildings, etc.

The invention discloses a belt conveyor transfer point closed dust controlling and dust removing system. The dust removing system comprises a closed dust controlling module, a dust adhesive dust suppression module and an atomized dust settling module, wherein the dust adhesive dust suppression module and the atomized dust settling module are located below the closed dust controlling module. The closed dust controlling module comprises an annular dust retardation air curtain generator connected with a pressure ventilation pipe. The dust adhesive dust suppression module comprises a dust adhesive solution transmission and distribution pipe connected with a water supply pipe I. The atomized dust settling module comprises a pressure water pipe connected with a water supply pipe II. In addition, the invention provides a method for conducting dust removing through the belt conveyor transfer point closed dust controlling and removing system. By the adoption of the belt conveyor transfer point closed dust controlling and removing system and the dust removing method, the problem that dust is diffused at a transfer point is solved, the dust removing efficiency is improved, influences on operation of a belt at the transfer point and inspection of workers are avoided, the situation that a dust generation area is disturbed by the external environment is avoided, and the dust generating amount can be reduced fundamentally.

The invention belongs to the field of building decorative materials, in particular to an electric heating movable floor and a heating system consisting of the electric heating movable floor. The electric heating movable floor comprises a floor substrate mainly manufactured by pressing a calcium sulfate material and is characterized in that the floor substrate is provided with a connection through hole, the upper surface of the floor substrate is provided with a wiring slot in which an electric heating wire is embedded, a start point and an end point of the wiring slot are communicated with the connection through hole in which a power supply connector is arranged, two ends of the electric heating wire are connected with the power supply connector, and a panel is adhered on the upper surface of the floor substrate. According to the invention, the decoration on the ground is firstly realized, the requirements of persons on good appearance and cleanness of the ground are met, and the heating system consisting of the electric heating movable floor disclosed by the invention meets requirements of the persons on indoor heating and is convenient for the persons to carry out single control.

The invention relates to a float-type water level regulator used for automatically supplementing water for a water tank of a ship. The water level regulator comprises a cabin tank linking part, a valve body part and a floating ball part; wherein, the cabin tank linking part includes a round nut (1), a welding seat (2) and a sealing ring (3); the valve body part comprises a rubber seal (4), a valve plug (5) and a valve body (6); the floating ball part includes a pin roll (7), a lever (8), a connecting rod (9), a cotter pin (10), a joint (11) provided with a screw hole, a floater ball body (12), a hexagonal nut (13), a hexagonal thin nut (14) and a spacer pin (15); a water inlet can be opened or closed according to the up and downing floating of the floating ball along with the liquid level, and the liquid level in the water tank is kept to be not lower than the set value. The invention has the advantages of simple and convenient fabrication and installation, low cost, simple operation and reliable performance.

The invention provides a light side wall suspension vertical force transmission rack and a first-stage engine, and solves the problems that a rack is long and supporting assemblies are complex due tothe fact that the height of a large engine and the height of a small engine of an existing first-stage engine are greatly different, or the space of a cabin section is occupied. The rack comprises a cross joint, four main joints, four connecting rods, a first I-shaped beam, a second I-shaped beam and two dowel bars; wherein the four connecting rods are connected through the four main joints to form a rectangular frame; the four main joints are respectively a first main joint, a second main joint, a third main joint and a fourth main joint; two ends of the first I-shaped beam are respectively connected with the third main joint and the first interface of the cross joint; two ends of the second I-shaped beam are respectively connected with the fourth main joint and the second interface of the cross joint; the connecting rods and the two I-shaped beams form a first isosceles right triangle frame, and the included angle between the plane where the frame is located and the plane where the rectangular frame is located is 93 degrees; and one ends of the two dowel bars are respectively connected with the first main joint and the second main joint, and the other ends of the two dowel bars are connected with the cross joint.

The invention discloses a sewer dredge environmental protection robot for pipeline dredging. The sewer dredge environmental protection robot comprises a machine box, a bottom plate is fixedly installed at the bottom surface of the machine box, two pairs of wheels are symmetrically and rotatably installed on the bottom plate left and right, the machine box is internally and symmetrically provided with gear cavities left and right, a thread supporting rod is installed in a rotating sleeve in a threaded mode, after a supporting motor is stared, the supporting motor drives a first bevel gear to rotate, the first bevel gear rotates to drive the rotating sleeve to rotate, the rotation of the rotating sleeve can make the thread supporting rod and a supporting foot stretch out downwards to support, after entering the inner part of a sewer pipeline, the robot can stand steadily, the debris and mud in the pipeline can be cleaned up, high-pressure water is used for washing, thus some debris and mud which are difficult to remove can be removed, and an operator on the ground can monitor the clearing situation in real time through a monitor unit to grasp.

The invention relates to a digital-control switching power supply, in particular to a method for regulating variation of output voltage of the switching power supply. When the output voltage of the switching power supply is regulated to increase or decrease, the speed of the increase or decrease of the output voltage is reduced through a digital method, and therefore an impact current caused by regulation of the output voltage is reduced. Due to the adoption of the digital method, the impact current can be regulated within an acceptable range according to the actual needs, and meanwhile the speed regulation is taken into account. The method for regulating the variation of the output voltage of the switching power supply has the advantages of effectively reducing the large impact current generated in the regulation process of the output voltage of the switching power supply, largely reducing the damage to related elements, and guaranteeing the power supply not to trip out caused by large current in the working process and not to affect work. The method for regulating the variation of the output voltage of the switching power supply is suitable for digital-control switching power supplies, particularly large-power switching power supplies with the power of more than 1kW.

The present invention provides a micro-nano structure closed pipeline and a preparation method thereof. The preparation method comprises: 1) providing a substrate, forming a flexible material layer on the substrate surface, and forming a plurality of concave groove structures on the flexible material layer surface; 2) forming metal layers on the surfaces of each flexible material layer and various concave groove structures; and 3) providing a metal thin film, achieving the surface and surface fusion welding of the metal film and the metal layer by using an ultrasonic welding process, and forming a plurality of closed pipelines. According to the present invention, the ultrasonic welding process is used, the surfaces of the two layers of the metals are subjected to mutual friction during the work process to form the intermolecular fusion so as to form the closed pipeline, the fusion position is at the molecular layer level, and the concave groove is not affected; the process is simplified, and the product has characteristics of heat resistance and compression resistance; and characteristics of no glue adhering, product thickness reducing, sealing property ensuring and service life prolonging are provided.

The invention discloses a buffered sliding mechanical limiting device, which belongs to the technical field of limitations to the motions of revolution bodies. The device comprises a movable limiting block, a left limiting combination and a right limiting combination, wherein the movable limiting block is wholly cambered, and is fixedly connected to the revolution part of revolution equipment; the left and right limiting combinations are identically structured and symmetrically arranged; each of the left and right limiting combinations comprises a limiting seat, a sliding block and pressure plates; a limiting damper is arranged in the limiting seat; the sliding block is provided with a cavity; four corners at the lower end of the sliding block are outwards extended to form a sliding rod respectively; the limiting seat is fixedly connected to the fixed part of the revolution equipment; the pressure plates and the limiting seat form four guide sliding rails; the sliding block is sleevedon the limiting seat; one side of the sliding block contacts the limiting damper; and each sliding rod on the sliding block is positioned in corresponding guide sliding rails. When the movable limiting block impacts the sliding block, the limiting damper absorbs the moment of inertia of the revolution equipment to weaken the rigid impact force of the revolution equipment and finally stop the revolution of the revolution equipment. The buffered sliding mechanical limiting device has the advantages of convenience of assembly and disassembly, long service life, impact resistance, high safety, high universality and the like.

The invention relates to the technical field of motors, in particular to a portable electric actuator. The portable electric actuator comprises an actuator main engine, an adapted engine base and a power box used for providing electricity for the actuator main engine, and the actuator main engine is mounted on the adapted engine base. The actuator main engine comprises a controller, a motor electrically connected with the controller, a speed reducer connected with the motor and an overload protector connected with an output shaft of the speed reducer. A power switch and a power line are arranged on the actuator main engine, a flange plate is arranged beside the motor, and the speed reducer is fixed on the flange plate. A handle is arranged on the actuator main engine, and a buzzer alarm and an alarm light are arranged in the power box. The portable electric actuator is portable in engine body, convenient to carry, free of power limitation, fast and convenient to mount, low in equipment investment, capable of meeting the requirement of an explosion-proof technology, and capable of avoiding influence on work caused by power reasons.

The invention discloses an industrial brush for cleaning the inner wall of a pipeline. The industrial brush comprises a cleaning box and a lifting box, wherein the cleaning box is arranged above the lifting box, universal wheels are arranged at the four corners of the bottom of the lifting box, the center position of the bottom wall in the lifting box is fixedly connected to a double-shaft motor through a base, two second rotating rods which are symmetrically arranged are fixedly connected to a driving end of the double-shaft motor, the ends, away from the double-shaft motor, of the two secondrotating rods are rotationally connected to two parallel side walls of the lifting box through rotating parts, a fourth bevel gear is fixedly connected to the middle position of each of the two second rotating rods, and two inner threaded sleeves which are symmetrically arranged are rotationally connected between the top wall and the inner bottom wall of the lifting box through rotating parts correspondingly. The product is thorough in cleaning, convenient and simple to use and can adjust the height according to the height of the pipeline.

The invention discloses a broken cable winding-preventing device for a cable annealing machine. The broken cable winding-preventing device comprises an annealing machine body, wherein a slide slot isformed in the front surface of the annealing machine body; a slide block is arranged in the slide slot; a slide sleeve is in blocking connection on the upper surface of the slide block; a slide rod isin sleeve connection in the slide sleeve; and the top end and the bottom end of the slide rod are fixedly connected with the upper surface and the lower surface of the inner wall of the slide slot separately. According to the broken cable winding-preventing device for the cable annealing machine disclosed by the invention, a cable transmission wheel, a roller, a sleeve, a rotary device, a fixed pulley and a slide rod are arranged, so that a worker controls the annealing machine body to work for rotating the cable transmission wheel, and therefore, the cable transmission wheel can drive a cable to move; when the cable breaks, the slide sleeve does not bear cable supporting force, so that a fixed plate can block a broken head of the cable, and therefore, the broken cable does not wind on the cable transmission wheel which continuously operates before downtime; and influences generated on work of the annealing machine body are avoided, and damages on the cable transmission wheel are avoided.

The invention provides a blade-wheel water-activating aerator, which is simple in structure and low in cost, allows upper water and lower water to be exchanged quickly and can provide water activatingand/or aerating function in divided time. The blade-wheel water-activating aerator comprises a floater, a driving motor (1) capable of rotating both forwardly and reversely and a water-stirring bladewheel (3) arranged on an output shaft (2) of the driving motor (1); the driving motor (1) is powered by an external power source; the output shaft (2) is a screw shaft; a screw shaft sleeve (5) mating with the screw shaft is fixed to the water-stirring blade wheel (3); when the driving motor (1) rotates forwardly, the screw shaft sleeve (5) is positioned at one end of the screw shaft; when the driving motor (1) rotates reversely, the screw shaft sleeve (5) is positioned at the other end of the screw shaft; the screw shaft sleeve (5) drives the water-stirring blade wheel (3) to rotate forwardly or reversely. The blade-wheel water-activating aerator is applicable to the field of farming equipment.

The invention discloses a transformer substation transformer noise radiation control platform. The transformer substation noise radiation control platform comprises a transformer arranged on a substrate, a steel frame platform arranged on the periphery of the transformer, and a shielding device arranged on the steel frame platform in a lifting manner, wherein a circular lifting groove is formed in the steel frame platform around the transformer, a bottom frame matched with the shape of the lifting groove is arranged below the lifting groove, an electromagnetic shielding mechanism and a noise shielding mechanism are arranged on the bottom frame, and a lifting mechanism is arranged on the bottom frame. According to the transformer substation transformer noise radiation control platform, noise and radiation shielding absorption for the transformer is realized by lifting the encircling type shielding device, the control platform is flexible and convenient to use, circuits above the transformer and the operation for workers on the steel frame platform cannot be influenced, the structure is simple, complicated and expensive equipment is not needed, the control platform is easy to popularize, and the affected environmental influence of transformer substation workers and nearby residents can be reduced effectively.

The present application discloses an imaging module. The imaging module includes a substrate, a sensor assembly, a lens assembly and an adjustable lens assembly. The sensor assembly is arranged on the substrate and is used to receive light passing through the adjustable lens assembly and the lens assembly. The adjustable lens assembly includes a piezoelectric actuator And the adjustable lens, the piezoelectric actuator is used to drive the adjustable lens to deform under the action of the electric signal, so as to change the focal length of the imaging module. The present application also discloses an electronic device. The piezoelectric actuator can be acted on by an electrical signal to drive the adjustable lens to deform to change the focal length of the imaging module, and additional driving devices such as a voice coil motor can be omitted to reduce the size of the imaging module. At the same time, the peripheral magnetic field generated by other electronic components will not affect the work of the adjustable lens group, and the imaging module has strong anti-interference ability.

The invention discloses a system for preventing long-time ignition failure of a gas stove on the basis of gas outlet pressure. The system comprises a pressure sensor, a controller, a thermocouple interface module and an electromagnetic valve; the pressure sensor is mounted between a gas stove assembly and a gas outlet; the controller receives signals of the pressure sensor and the thermocouple interface module; the electromagnetic valve is mounted at a gas inlet of the gas stove; the controller acquires the gas outlet flow velocity of the gas outlet through the pressure sensor, detects whetherignition is successful through the thermocouple interface module and controls opening and closing of gas inlet of the gas stove through the electromagnetic valve. The problem that the gas concentration exceeds the standard due to repeated ignition of an existing gas stove in a short time is solved.