44results about How to "Increase the exciting force" patented technology

There is provided a vibration isolator capable of, (1) vibration isolation performance for ground motion disturbance: vibration isolation for floor vibration, and (2) vibration control performance for direct acting disturbance: suppression of swing due to driving reaction force caused by stage movement, significantly improving the above (2), i.e., the vibration control performance, with keeping the above (1), i.e., the vibration isolation performance, at a high level.

The invention provides an accurate controllable non-contact test piece rotary magnetic field fatigue excitation and vibration test device. The device comprises a vibration damping insulation clamp, a vibration damper, a dynamic balance device, a vibration exciter, an electromagnetic piezoelectric coupling vibration sensor, a test station, a transmission device and an accurate control device. The excitation and vibration test device is suitable for rotary test pieces and especially suitable for vibration characteristic researches on a wind power blade, an engine, a turbine blade, a helicopter rotor and a tail rotor blade, the excitation and vibration test device can vividly simulate vibration fatigue states of rotary test pieces respectively under conditions of 360-DEG all directions, same rotating speed and different excitation forces, same excitation force and different rotating speeds, and different rotating speeds and different excitation forces, the excitation and vibration test device can monitor related vibration characteristic parameters such as the excitation force, the vibration displacement, the vibration speed and the vibration acceleration continuously, and the excitation and vibration test device is suitable for vibration fatigue characteristic analysis on stationary test pieces.

A bobbin comprises three hollow-cylindrical sections, specifically a middle body section, and two lateral body sections. The middle body section has its diameter diminished compared to the two lateral body sections thus forming an annular recess which allows a magnet wire to be wound with an additional number of turns around the bobbin without increasing a motor size. With this bobbin structure, when the number of turns of a magnet wire is set to remain unchanged, the diameter of flanges of the bobbin can be reduced resulting in a downsized motor.

The invention discloses a layered high-frequency fine vibrating screen. The layered high-frequency fine vibrating screen is composed of an ore pulp distribution system, a screening system and a discharging system. The ore pulp distribution system structurally comprises a first-level ore pulp tank (2), a second-level ore pulp tank (3) and hoppers (5), wherein the feed end of the first-level ore pulp tank (2) is connected with a multihole energy dissipation valve (1); an overflow port of the first-level ore pulp tank (2) is connected with the second-level ore pulp tank (3); the hoppers (5) are connected to the lower portion of the second-level ore pulp tank (3). The screening system is composed of a vibration excitation unit, a classifying unit and a supporting unit. The discharging system has the functions of collection and discharge of materials below the screen and collection and discharge of materials on the screen, wherein the materials below all layers of high-frequency screen assemblies (7) are connected with upper chutes (10) through short pipes; the upper chutes (10) are connected with a material-below-screen main outlet (20); the materials on all the layers of high-frequency screen assemblies (7) are connected with lower chutes (11); a subsidiary discharge port (21) is connected to the lower chutes (11). The layered high-frequency fine vibrating screen has the advantages of being uniform in ore pulp feeding, high in screening efficiency and processing capacity and capable of adapting to different working conditions.

The invention discloses a bidirectional discharge circular vibrating screen, which consists of a screen body, a vibration generator, springs, a support and a transmission device, and is characterized in that the screen body consists of a screen frame, an upper screen mesh and a lower screen mesh; the upper screen mesh is provided with a discharge opening I, and the lower screen mesh is provided with a discharge opening II; the support is arranged on the lower part of the screen body which is fixedly connected with the support through four groups of springs; and the vibration generator is arranged on the upper part of the gravity center of the screen body. The bidirectional discharge circular vibrating screen has the advantages that the material circular vibrating screen adopts a simple eccentric shaft block to adjust the amplitude, has the characteristics of long slip screen line, multiple screening specifications, quick discharge and high classification efficiency, also has the characteristics of reliable structure, strong excitation force, high screening efficiency, small vibrating noise, firmness and durability, convenient maintenance, safe use and the like, and can be widely applied to classification and separation of materials in the industries such as mining, building material, traffic, energy and the chemical industry.

The invention relates to a high-speed railway live-loading field analog experiment system, comprising: a frequency control motor (7) is fixedly arranged on a mounting trolley (8) of the motor, the shaft of the motor (7) is connected with the input shaft at one side of a speed increaser (2) by a universal coupler (3); the front and rear output shafts (21, 22) with the same height at the other side of the speed increaser (2) are connected with same eccentric blocks (4), and the rotating speed of the front and rear output shafts (21, 22) is same, the rotating direction thereof is reverse; the speed increaser (2) is fixed in the center of the upper surface of a vibrating grid (1). The exciting force of the system is strong, excited frequency thereof is high, the reliability is high, and installation and debugging are convenient; therefore, the system is particularly suitable for the high-speed railway live-loading field analog experiments.

An active dynamic vibration absorber apparatus for a vehicle that may be mounted to a frame of the vehicle and vibrates when power may be supplied to attenuate vibration of the vehicle, may include a housing, an upper spring and a lower spring, and a yoke assembly disposed between the upper spring and the lower spring which may be plates arranged in parallel, and selectively vibrates up/down in the housing, wherein the yoke assembly has an upper protrusion and a lower protrusion that protrude from the top and the bottom thereof, respectively, the upper protrusion being fastened to the center of the upper spring through the housing, and the lower protrusion being fastened to the center of the lower spring in the housing.

The invention discloses a rod screening and feeding machine which comprises a feeding machine tank composed of a feeding tank (9), a bar section (10) and a fine screen (11). The feeding machine tank is provided with an excitation system. The excitation system is a double-shaft excitation device. The excitation system is arranged on the lower portion of the feeding machine tank. According to the structure of the double-shaft excitation device, a control system of a motor (1) is connected with a frequency converter (2), a main shaft of the motor (1) is connected with a main eccentric shaft (5) through a flexible coupler (3), and the main eccentric shaft (5) is connected with an auxiliary eccentric shaft (7) through a gear (6) in a transmission mode. The rod screening and feeding machine is large in excitation force and high in processing ability, and the feeding quantity can be convenient to adjust.

The invention relates to a large-span vibrating screen exciter for sludge water treatment, slurry treatment and material screening and conveying. The large-span vibrating screen exciter comprises a motor and a vibrating screen, wherein the motor adopts a shock-proof motor, the two ends of the shock-proof motor are connected with a universal transmission shaft through a coupling, the universal transmission shaft is connected with at least two eccentric mass blocks through the coupling, and the eccentric mass blocks are supported on a motor base through a bearing and a bearing support; and the entire exciter is connected to be a whole through an extension cylinder component connected at the two ends of the casing of the shock proof motor. The shock-proof motor can be a flame-proof or non-flame-proof shock-proof motor. The invention effectively realizes the improvement on the force-mass ratio and the large span of the excitation system. The invention has the advantages of simple structure, convenient manufacturing and assembly, long service life and low cost. Compared with the prior special long-shaped large-span exciting motor, the cost performance of the invention is improved greatly, and the limitation that the prior long-shaped large-span exciting motor can not be enlarged further is broke through.

The invention discloses a vibrating power head device, which comprises a vibrating assembly and an outer box arranged outside the vibrating assembly, a guiding mechanism is arranged between the vibrating assembly and the outer box, the vibrating assembly includes a vibrating box and a gear box, and the front end of the gear box The drilling tool is connected through the output joint, and the vibration box is detachably connected at the rear end. In the present invention, a vibration box and a gear box are arranged in the outer box. Through the fixed connection between the vibration box and the gear box, the vibration box directly drives the gear box and the main shaft to vibrate together, thereby driving the drilling tool to vibrate and rotate the drilling at the same time, which can effectively reduce the vibration of the main shaft. The damage received makes the vibration transmission route more reasonable. Moreover, the vibration box and the gear box ensure that the vibration displacement of the vibration component only occurs in the axial direction through the guiding mechanism, and limit the unreasonable vibration in other directions, so that the generation and transmission of the exciting force are stable and reliable, and the impact direction is consistent. Improve the work efficiency of drilling holes.

The invention discloses a vibration aging method for a marine drilling platform, and relates to the technical field of stress relief treatment for steel structural parts. The marine drilling platformis a large welded structural part, and it is difficult for existing thermal aging and vibration aging methods to perform aging treatment on the marine drilling platform. According to the vibration aging method for the marine drilling platform, a plurality of vibration exciters are adjacently fixed to the marine drilling platform, then the vibration exciters are started and controlled and have thesame subresonant frequency in the marine drilling platform, at the same time, the same frequency subresonance vibration is carried out to effectively eliminate residual stress, and the average elimination ratio of the residual stress can reach 44.5%, so that the technical problem that the residual stress is difficult to eliminate by the marine drilling platform is solved; and the vibration agingmethod for the marine drilling platform can be used in marine drilling platform manufacturing industries.

The invention discloses an efficient carbon raw material screening linear sieve. A support is included. A vibration motor is fixed in the support. The output end of the vibration motor is connected with a sieve box. Fixing blocks are fixed to the top end of the support. A sieve frame is arranged in the sieve box. T-shaped bolts are fixed in the sieve frame. Side plates are connected to the right sides of the T-shaped bolts. The right sides of the side plates are provided with seal pads. Seal plates are connected to the right sides of the seal pads. A first screen is arranged below the sieve frame, and a second screen is arranged below the first screen. A feeding port is formed in the top end of the sieve box, and a sieve cover is arranged above the sieve frame. According to the efficient carbon raw material screening linear sieve, rapid screen replacement is convenient, various screens are allowed to be used, a screening machine is convenient to operate, the screening area is large, benefits are high, the service life of the screens is long, usage of fine net consumables is reduced, and cost is reduced.