49results about How to "Increase the vibration area" patented technology

There is provided a piezoelectric device for generating an acoustic signal in which an expansion mechanism expands a disposition of a laminated piezoelectric actuator by the principle of leverage. The mass of a base member placed in the expansion mechanism is larger than the mass of a vibration output member. An overall device size is small. The piezoelectric device has a pressurization structure for reducing a tractive force acting on the laminated piezoelectric actuator which is generated by the amplification. This enables provision of a piezoelectric device for generating an acoustic signal that is a small size, highly resistant to dropping impact, and has god acoustic performance with less sound leakage.

A liquid crystal television bass boost system comprises a front frame, a rear cover, a screen and a vibration speaker, wherein the vibration speaker is fixed to the front frame through a speaker support, the vibration speaker and the speaker support are fixedly connected through a spring cushion, an elastic cushion is installed on an vibration head of the vibration speaker, a metal plate is arranged between the rear cover and the vibration speaker and is fixed to the rear cover, and the metal plate and the vibration head of the vibration speaker are connected tightly through the elastic cushion. By the aid of the system, a flat television has good bass effect under the condition that the thickness of a mainframe is not changed.

The present invention describes an electret condenser microphone having a dual base structure wherein a metal ring and an insulation ring are bonded. The electret condenser microphone includes a metal ring having a shape of a spool wherein a center portion is concaved and end portions extrude, an insulation ring surrounding the center portion and extruding with respect to the extruding end portions of the metal ring to form an insulation space between a casing and the metal ring.

The invention discloses a sound production device and wearable equipment. The sound production device comprises a vibration system and a magnetic circuit system, the vibration system comprises a flatvoice coil. The magnetic circuit system comprises a magnet assembly and a magnetic conduction assembly. The voice coil is inserted into a magnetic gap formed by the magnetic circuit system. The magnetization direction of the magnet assembly and the vibration direction of the voice coil are parallel to the vertical direction of the sound production device. The magnet assembly comprises an upper magnet unit and a lower magnet unit, the magnetic conductive assembly comprises a first magnetic conductive plate and a second magnetic conductive plate which are arranged corresponding to the long axisof the voice coil, the first magnetic conductive plate is located between the upper magnet unit and the lower magnet unit, and the second magnetic conductive plate is located at the end, away from thefirst magnetic conductive plate, of the upper magnet unit. According to the sound production device, the space is saved, the vibration area of the dome piece can be increased through the vertically-arranged folding ring piece, and the acoustic performance of the sound production device is improved.

The invention discloses an anti-blocking and flying-dust-free type cement transfer tank for a highway construction site. The cement transfer tank comprises a container which is in a cuboid shape, a tank body is arranged in the container, a discharging opening extending out of the bottom of the container is formed in the lower end of the tank body, a discharging valve is arranged at the dischargingopening, the top of the container is provided with a top cover used for sealing the tank body, a feeding hole and a feeding exhausting device are arranged on the top cover, an automatic feeding sealing device is arranged at the feeding hole, a discharging pressurizing mechanism is arranged on the upper side part of the container, and a knocking anti-discharging-blocking device is arranged betweenthe bottom of the container and the outer side of a conical structure of the tank body. The cement transfer tank has the advantages that the structural design is reasonable, feeding and discharging are convenient and rapid, good sealing performance is achieved, moreover, vibration unblocking can be achieved when blockage occurs in the tank body, cement powder conveyed by a cement tank truck can be directly discharged into the tank body of the cement transfer tank, so that the cement tank truck is liberated, then the cement tank truck can transport cement for a plurality of times, the cement transfer tank can be placed on the construction site and can also be placed on an engineering transport vehicle.

This invention relates to a method for improving tone color and volume of inflexion zither characterizing that a frame is added between the inflexion orbits and a tone plate, both ends of the frame cross over the wood grain direction and are fixed on the plate while the middle is hung in the air, the inflexion orbits of strings are fixed on the frame to make up of codes of the instrument and the height of the device should be lower than that of the middle code or the two mountains at both sides, in which, the inflexion orbits do not contact with the plate directly after adding a frame between them, thus the sound is spread more elastically.

The invention belongs to the technical field of concrete vibration, and particularly relates to a movable concrete mechanical vibrating device. Aiming at the problems that when concrete is vibrated, adevice needs to be continuously pushed manually to move, and manpower is consumed, the following scheme is proposed, the movable concrete mechanical vibrating device comprises a top plate, two firstmounting blocks which are symmetrically distributed are fixed to the outer wall of the bottom of the top plate, first rectangular grooves are formed in the outer wall of the bottom of the first mounting blocks, first sliding rails are fixed to the inner walls of the left sides and the right sides of the first rectangular grooves, sliding blocks are slidably connected to the inner walls of the first sliding rails, and first movable plates are fixed to the outer walls of the bottoms of the sliding blocks. Through the arrangement of a third motor, a rotating disc, a connecting rod, a mounting sleeve and a fixing plate, an output shaft of the third motor drives the rotating disc to rotate so as to drive the upper end of the connecting rod to do circular motion, the lower end of the connectingrod drives the mounting sleeve to move up and down, so that a vibrating rod continuously moves up and down in concrete, the honeycomb pitted surfaces with different depths of the concrete are vibratedand compacted, the vibrating efficiency is high, and manpower is saved.

The invention discloses an electric-resistance-welded small size quartz-crystal resonator with a one-end-fixed chip. The quartz-crystal resonator comprises a cavity shell consisting of a substrate and a shell. A silver electrode quartz plate, a base and spring pieces are arranged in the cavity shell. The base comprises two glass insulators arranged at the bottom of the substrate, and two lead terminals penetrating through the two glass insulators. Each of the two lead terminals consists of a pin head part and a lead foot part. The silver electrode quartz plate is fixed on the spring pieces through two conductive adhesives. The spring pieces are bonded on two sides of one end of the quartz plate by the conductive adhesives. The quartz-crystal resonator has the advantages that vibration areas during the resonance process of the silver electrode quartz plate are enlarged, affects caused by boundary effect are decreased, resonance resistance of the quartz-crystal resonator can be reduced efficiently, and requirements of work stability are met.

The present invention achieves an ultrasonic transducer that has a structure suitable for use in the high-frequency band and that is highly durable. In addition, the sonic characteristics of the ultrasonic transducer are less likely to be affected by the bonding strength, contact pressure, and/or physical variation between members. The ultrasonic transducer (1A) is provided with a resin case (3) and a transducer (11). The resin case (3) has an opening (3A). The transducer (11) is provided with a matching layer (11A) and a piezoelectric element layer (11B). The piezoelectric element layer (11B) is configured so as to perform stand-alone thickness vibration, and the side surface of the piezoelectric element layer that intersects the main surface of the thickness direction faces and is in contact with the inner wall surface of the opening (3A). The matching layer (11A) is layered in the thickness direction of the piezoelectric element layer (11B), and the side surfaces that protrude from the opening (3A) in the thickness direction of the piezoelectric element layer (11B) and intersect the main surface of the thickness direction are free from the inner wall surface of the opening (3A).

The invention discloses an ultra-thin sound box structure comprising a sound guiding sound box, a full-frequency loudspeaker and a tweeter, wherein the full-frequency loudspeaker comprises a basin frame, magnetic steel, a voice coil, a magnet, a magnetic conductive plate, a sound basin, a dust cap and a centring disk, the back surface of the centring disk is adhered in a groove, the front face ofthe centring disk is fixedly connected with the sound basin, the sound basin is of a V-shaped structure, an arc-shaped folding ring is arranged on the sound basin, through the cooperative use of the full-frequency loudspeaker and the tweeter, the sound of the whole ultra-thin sound box is more balanced, and the ultra-thin sound box can achieve the same effect as the sound quality of the large-volume sound boxes on the market.

The invention discloses a concrete vibrator and belongs to the technical field of concrete equipment. The concrete vibrator is structurally characterized by comprising a main rod, wherein the main rodis sleeved with a sleeve; a drive device capable of enabling the sleeve to reciprocate in the axial direction of the main rod is arranged at the end, away from the main rod, of the sleeve; at least two vibration pieces are hinged to the other end of the sleeve; a guide rail is arranged on the side, close to the main rod, of each vibration piece, a slider capable of sliding along the guide rail isarranged on the guide rail, one end of the slider is hinged with one end of a support rod, and the other end of the support rod is hinged with the main rod. When used for vibrating concrete solids, the vibrator has the advantages that vibration area of the concrete can be increased, overall vibration time can be shortened, the concrete is more uniformly vibrated, and layering segregation is avoided.

The invention relates to a cantilever-assembled large-span bridge wet joint pouring intelligent equipment, comprising a bottom plate, a pouring device is arranged at the front end of the bottom plate, a vibrating compaction device is arranged at the rear end of the bottom plate, and the pouring device includes a pouring support frame installed In the perfusion storage box on the bottom plate, a discharge port is arranged on the lower side of the front end of the perfusion storage box, and a perfusion adjustment mechanism is installed on the front end of the bottom plate. The present invention can solve the instability of artificially conveyed and poured concrete existing in the existing wet joint concrete pouring process, and it is easy to make the concrete splash to the position other than the connecting joint. Manual conveying of concrete cannot ensure the uniformity of concrete pouring, and manual use of existing vibration is required. The equipment vibrates and compacts the poured concrete. During the vibration process of wet joint concrete pouring, it is necessary to avoid the reinforcement cage. The operation is complicated, and the concrete cannot be fully vibrated manually, and the compactness of the concrete cannot be ensured, and the concrete will have holes. .

The invention provides a stirring device with vibrating blades. According to the device, a stirring arm comprises a fixed part fixedly connected to a stirring shaft and a stirring blade mounted on the fixed part, the fixed part is provided with a mounting cavity, the fixed part is provided with a mounting hole, the stirring blade is provided with a mounting part, the mounting part extends into the mounting cavity via the mounting hole, an elastic sealing part is arranged between the stirring blade and the mounting hole, the elastic sealing part separates the stirring blade and the fixed part, a vibrator mounted on the mounting part is arranged in the mounting cavity, the elastic sealing part separates the fixed part and the vibrator, the mounting cavity is provided with an opening communicating with a stirring cavity, a vibrating stirrer further comprises a vibrating blade connected with the vibrator via the opening, an elastic washer is arranged between the vibrating blade and the fixed part, and the vibrating blade and the elastic washer can seal the opening. The device does not need to vibrate the stirring shaft, and can achieve a good vibration stirring effect.

The invention discloses a paper pushing mechanism for corrugated paper production, and belongs to the related field of corrugated paper manufacturing. The paper pushing mechanism for corrugated paper production comprises a moving seat, a first alignment plate, a second alignment plate, a rotating block, a sliding strip, a front side baffle and an alignment device. Corrugated paper to be aligned is located between the first alignment plate and the second alignment plate, the alignment device is arranged in the first alignment plate, a vibration element and a sliding adaptation element are arranged in the alignment device, the vibration element can generate vibration to conduct vibration alignment on the corrugated paper to be aligned between the first alignment plate and the second alignment plate, and the sliding adaptation element can enable the vibration element to slide while vibrating, so that the vibration range of the vibration element is enlarged. According to the scheme, the alignment device is arranged, the alignment device comprises the vibration element and the sliding adaptation element, the vibration element can conduct vibration alignment on the corrugated paper, and then the situation that some irregular corrugated paper is extruded and deformed due to extrusion alignment is prevented.

The invention discloses a loudspeaker and a diaphragm fixing method of the loudspeaker. The loudspeaker comprises a basin frame, a fixing ring and a vibrating diaphragm arranged above the basin frame; the basin frame comprises a first connecting part which is arranged close to the vibrating diaphragm; and the vibrating diaphragm comprises a second connecting part arranged close to one side of the basin frame, the second connecting part sleeves the periphery of the first connecting part, and the fixing ring is clamped at the periphery of the second connecting part, so that the second connecting part is pressed at the periphery of the second connecting part. The loudspeaker provided by the invention is convenient for fixing the vibrating diaphragm, is high in production efficiency, and enables the effective vibration area of the vibrating diaphragm to be large.

The invention belongs to the technical field of composite plating equipment, particularly relates to silicon carbide composite plating equipment. The following solution aiming at the problems of incomplete cleaning and low blow-drying efficiency in the prior art is provided, the silicon carbide composite plating equipment comprises a cleaning box, a blow-drying box, a preheating tank, a pre-plating cleaning tank, an activating tank and an electroplating tank, wherein exhaust openings are correspodningly formed in the preheating tank and the activating tank, a spraying pipe is arranged in the preheating tank, heating rods are arranged in the preheating tank, the activating tank and the electroplating tank correspondingly, stirring air pipes are arranged in the pre-plating cleaning tank, the activating tank and the electroplating tank correspondingly, and an ultrasonic vibration plate is arranged in the pre-plating cleaning tank. According to the silicon carbide composite plating equipment, the cleaning effect can be improved, the blow-drying efficiency can be improved, and the equipment is easy to use and convenient to operate.