38results about How to "Reduce unwanted vibration" patented technology

The invention discloses a drive type hot-melt spraying marking machine, which comprises a rack, and the rack is provided with a power-driven system, a heating system, a marking system, a travel system, a hydraulic control system, a pneumatic control system and a steering system, wherein the power-driven system is in drive connection with the travel system, the hydraulic control system and the pneumatic control system respectively; the hydraulic control system is in drive connection with the steering system; and the marking system is in drive connection with the hydraulic control system and the pneumatic control system respectively. In the invention, a hot-melt spraying coating is heated to be a molten condition through an infrared heating system and a heat-conduction-oil heat preservationcyclic system, and then is sprayed to specified positions through a hot-melt gun, and the like. The drive type hot-melt spraying marking machine has the advantages of high marking efficiency, no needof removing existing lines for redintegration, adjustable width and thickness of marking lines, high heating efficiency, sufficiency for combustion and flexible control of flames.

The invention discloses a convenient-to-disassemble cloth winding drum device for textile machinery. The convenient-to-disassemble cloth winding drum device for the textile machinery comprises a bottom plate, a fixing plate is fixedly connected to the left side of the top of the bottom plate, a stabilizing plate is fixedly connected to the right side of the top of the bottom plate, the top of theleft side of the fixing plate is fixedly connected with a rotary motor, an output shaft of the rotary motor is fixedly connected with a rotary shaft, and one end, away from the rotary motor, of the rotary shaft penetrates through the fixing plate and extends to the right side of the rotary shaft to be fixedly connected with a first connecting plate. According to the device, through the mutual cooperation among a handle, a mounting plate, a connecting spring, a sliding block, a stretching plate, a fixing groove, a first connecting block, a second connecting block, a threaded sleeve, a threadedrod, a third connecting plate, a fixing pulling block, a transverse plate, a supporting plate, a rotating block, an annual shell, a connecting shaft and a rolling bearing, the convenient dismounting effect is achieved, the dismounting is very convenient, the dismounting speed is increased, the working time and energy are reduced, the working efficiency is greatly improved, and great convenience isbrought to users.

Methods and apparatus are provided through which mechanical members associated with a moving subsystem on a mobile X-ray medical imaging system are accelerated and decelerated using triangular acceleration and deceleration pulses having pulse widths that do not provide excitation energy that will cause unwanted vibrations in the members.

The invention discloses a damping mechanism for an engine of an oil drive rotor-wing unmanned aerial vehicle. The damping mechanism comprises an engine mounting structure and an unmanned aerial vehicle body; the engine mounting structure comprises the engine, an engine mounting plate, a plurality of trapezoidal connecting pillars and a damping plate; the upper portions of upper portion flanges of the trapezoidal connecting pillars are sleeved with axial rubber damping pads, and the multiple trapezoidal connecting pillars are upwards connected with the engine mounting plate through the rubber damping pads; an output shaft of the engine extends out from a through hole in middle of the damping plate; radial damping pads are mounted between the damping plate and the trapezoidal connecting pillars; a gear reduction box is connected to the unmanned aerial vehicle body through a plurality of flexible rubber damping pads; the output shaft of the engine is connected with the input end of the gear reduction box through a clutch; and the lower ends of the multiple trapezoidal connecting pillars are connected to an outer shell of the gear reduction box in a rigidity mode. According to the damping mechanism for the engine of the oil drive rotor-wing unmanned aerial vehicle, the problem that the flying and controlling effects are influenced by resonance of a current oil drive multi-rotor-wing unmanned aerial vehicle body and the engine is solved; and flying performance and safe stability of the oil drive multi-rotor-wing unmanned aerial vehicle can be promoted.

A method for controlling the operation of an electromechanical transducer is provided. The method includes (a) determining during a first period of time a first strength of the harmonic operational behavior of the transducer, (b) determining during a second period of time a second strength of the harmonic operational behavior of the transducer, wherein the second period of time is different from the first period of time, (c) calculating a harmonic control signal in response to both the determined first strength of the harmonic operational behavior and the determined second strength of the harmonic operational behavior, (d) generating a modified drive signal based on the calculated harmonic control signal, and (f) supplying the generated modified drive signal to electromagnetic coils of a stator of the transducer. Further, a corresponding control system for controlling the operation of an electromechanical transducer is provided.

The invention discloses a horizontal die moving and circulating mechanism which comprises a rack, two die flow lines and two punching machines. The die flow lines and the punching machines are mounted on the rack, the die flow lines are parallelly arranged, each die flow line is formed by linearly distributing dies in designed number, and the punching machines are mounted at the tail ends of the die flow lines respectively. The horizontal die moving and circulating mechanism is characterized by further comprising two die pulling devices and two sets of longitudinal die moving devices, the die pulling devices are arranged oppositely and mounted at the tail ends of the die flow lines respectively, the head end and the tail end of each die flow line are connected by one longitudinal die moving device, a circulating operation mechanism in process connection is formed in a same horizontal plane, dies circularly move along die flow line guide rails and the longitudinal die moving devices, the die flow line guide rails are mounted on the rack, and the die pulling devices and the punching machines are sequentially mounted at the tail ends of the die flow lines respectively.

A method of controlling an electromechanical transducer includes (a) observing the strength of a physical quantity being characteristic for the harmonic operational behavior, (b) providing an observation signal being indicative for the observed strength of the physical quantity, (c) comparing the provided observation signal with a reference signal for the strength of the harmonic operational behavior, (d) determining a harmonic control signal in response to the observation signal and in further response to the reference signal, (e) generating a modified drive signal based on the determined harmonic control signal, and (f) supplying the generated modified drive signal to electromagnetic coils of a stator of the electromechanical transducer. Further, a control system and a computer program which are adapted for carrying out and / or for controlling the method are provided.

A quasi-zero stiffness vibration isolation device comprises a disc spring vibration isolation mechanism and a cross vibration isolation mechanism. The disc spring vibration isolation mechanism comprises a supporting seat assembly, a middle shaft assembly and grooving disc springs; the supporting seat assembly comprises cylindrical supporting seat outer ring with the upper portion and the lower portion being open; the middle shaft assembly comprises a middle shaft concentrically arranged in the supporting seat outer ring; at least one grooving disc spring is arranged on a middle shaft in a sleeving mode, the radial inner sides of the grooving disc springs are embedded in the middle shaft, and the radial outer sides of the grooving disc springs are embedded in the supporting seat outer ring;the cross vibration isolation mechanism comprises an upper cross bracket and a lower cross bracket which are horizontal and arranged in an up-down spaced mode; a through hole with a vertical axis isformed in the center of the upper cross bracket, the two ends of four arc-shaped spring plates are connected with the corresponding cross ends of the upper cross bracket and the lower cross bracket, the middle shaft upwards penetrates out of the upper end face of the upper cross bracket from the through hole in the upper cross bracket, and the upper portion of the supporting seat outer ring is connected to the lower portion of an upper cross connecting bracket. Through the structure, the quasi-zero stiffness vibration isolation device has the double vibration isolation effects in the verticaldirection and horizontal direction.

The invention discloses a damping type corrugated pipe compensation moving ring component of a mechanical sealing device. The damping type corrugated pipe compensation moving ring component comprises a moving friction ring (1), a moving friction ring base (2), a welded metal corrugated pipe (3), a tailstock (4), a transmission seat (5) and a seal ring (6), and is characterized in that a ring housing (8) is fixedly connected to the tailstock (4); and a damper (9) is fixedly connected to an inner ring surface (82) at the front end (81) of the ring housing (8) and is in contact matching with an outer ring surface of the welded metal corrugated pipe (3) to achieve a damping effect on the welded metal corrugated pipe (3), thereby avoiding and lightening the problem that the welded metal corrugated pipe is fractured due to vibration, and prolonging the service life of mechanical sealing.

The invention discloses a shock absorbing device for a motor of a new energy vehicle, which comprises a block-shaped shock absorbing rubber block. A rectangular through-shaped shock absorbing square hole is arranged in the center of the shock absorbing rubber block. The shock absorbing The upper and lower sides of the square hole are respectively provided with a fixed notch, and a fixed card seat is respectively arranged in the said fixed notch, and said fixed card seat includes a disk-shaped seat plate and a hollow card cylinder, and said A connecting thread is provided on the inner wall of the cartridge, and the fixing clip is bonded to the fixing notch. The shock-absorbing rubber block is made of rubber. When in use, the user directly places the shock-absorbing rubber blocks on the four corners of the bottom of the motor, and then uses the fixing bracket to connect and fix the shock-absorbing rubber blocks. When the motor vibrates, the shock-absorbing square hole can greatly reduce the harmful vibration of the motor, the reverberation is small, and the effect is obvious.

The invention discloses a protection device for a high-pressure air guiding pipe. The protection device for the high-pressure air guiding pipe comprises an upper clamping head and a lower clamping head, wherein the upper clamping head and the lower clamping head are fastened through a screw nail assembly; the upper clamping head is provided with a first opening through which the screw nail assembly passes, an upper bearing channel for clamping the high-pressure air guiding pipe and an upper buffer groove; the lower clamping head comprises an installation base, a lower bearing channel for clamping the high-pressure air guiding pipe and a lower buffer groove; and a second opening is arranged on the installation base. The upper bearing channel, the upper buffer groove, the lower bearing channel and the lower buffer groove are made of elastic rubber. According to the protection device for the high-pressure air guiding pipe, disclosed by the invention, the upper buffer groove and the lower buffer groove are made of the elastic rubber, so that harmful vibration brought to the air guiding pipe from a pulse high-pressure airflow can be largely reduced.

The invention aims to provide a device for inhibiting a hydraulic jump or oscillation phenomenon in a built-in voltage stabilizer. The device comprises a container body wall surface, a self-adaptive heterogeneous partition plate, an upper-layer fixed partition plate, a lower-layer fixed partition plate, a damping device and a fixing piece, and the damping device and the fixing piece are connected with the upper-layer fixed partition plate, the self-adaptive heterogeneous partition plate and the lower-layer fixed partition plate. The upper-layer fixed partition plate is located at the upper end of the self-adaptive heterogeneous partition plate, the lower-layer fixed partition plate is located at the lower end of the self-adaptive heterogeneous partition plate, and the upper-layer fixed partition plate, the self-adaptive heterogeneous partition plate and the lower-layer fixed partition plate are fixed to the inner ring of the wall face of the body through damping devices and fixing pieces. Hydraulic jump wave energy is absorbed, the wave reflection coefficient is reduced, the energy is flexibly absorbed instead of being reflected, self-adaption to the liquid level is achieved, the suppression device can achieve the hydraulic jump absorption effect under the condition that the water filling amount changes, and the ratio of hydraulic jump energy transmitted to the pressure stabilizer body is reduced.

The invention discloses a pivot fixing device of a winch. The pivot fixing device of the winch comprises a longitudinally-arranged supporting plate, wherein a pivot hole is formed in the top of the supporting plate, the first gear portion, the second gear portion and the third gear portion are arranged under the pivot hole, and a fixing clamp block is arranged in the pivot hole and fixedly connected with the supporting plate through a pair of buffering gaskets. The pivot fixing device of the winch utilizes the fixing clamp block arranged in the pivot hole of the supporting plate, and due to the fact that the fixing clamp block is made from an ABS engineering plastic, the harmful vibration and noise produced by a pivot can be reduced greatly. In addition, due to the fact that the fixing clamp block is fixedly connected with the supporting plate through the pair of buffering gaskets, the harmful vibration and noise produced by the pivot in operation are further reduced.

The invention discloses a grader shovel rack damping device comprising a gambose damping lug; the bottom of the damping lug is provided with a penetrating fixed through hole; the front portion of the damping lug is provided with a clamp notch; the side wall of the damping lug is provided with a pair of connecting flanges. The grader shovel rack damping device uses the damping lug made of hard rubber, so a user can directly use the clamp notch to buckle the edge of the shovel rack, and the flanges can be connected for fixation, thus greatly reducing harmful vibrations of the shovel rack, improving stability of the grader shovel rack; the grader shovel rack damping device is simple in structure, convenient in usage, and strong in practicality.

The invention discloses a yarn guide cam of a high-speed winding machine. The yarn guide cam comprises a yarn guide cam body and a yarn guiding groove formed in the surface of the yarn guide cam body, multiple holes which do not penetrate through the yarn guiding cam are formed in the positions, close to the two ends of the yarn guiding cam, of the surface of the yarn guide cam body respectively, the yarn guiding cam is specially used for the high-speed winding machine with 16 winding heads, wherein the rotation speed of the high-speed winding machine is 6500-8000 rpm. The section of the special position of the yarn guiding cam body is changed, mass distribution is changed, harmful vibration is reduced, and the yarn guide cam is particularly suitable for high-speed winding machine with the 16 winding heads, wherein the rotation speed of the high-speed winding machine is 6500-8000 rpm.

The invention discloses a toolbar limiter of a slitting machine. The toolbar limiter of the slitting machine comprises a platy limit body, an 8-shaped limit groove is formed in the limit body, and a pair of fixing through holes is formed in the limiting groove. By the aid of the limit body made of hard rubber, a user can directly sleeve the 8-shapied limit groove at the tail end of a toolbar and fixes the toolbar in the fixing through holes, so that nuisance vibration of the tool bar is greatly reduced, and cutting precision of the slitting machine is improved. The toolbar limiter of the slitting machine is simple in structure, low in cost, obvious in effect and high in practicality.