40results about How to "Reduce or eliminate vibration" patented technology

The invention discloses an elevator car damping structure. The elevator car damping structure comprises a car body; the car body comprises an outer shell and an inner shell; a car liner is fixedly mounted at the bottom end in the inner shell through a spring damper; a hydraulic damper is fixedly mounted at the middle part of the top of the outer shell; a connecting block is integrally mounted at the top of the hydraulic damper; a fixed block is slidingly connected to the top corner of the inner shell; a support rod is hinged between the fixed block and the connecting block; limiting plates arefixedly mounted on the two sides of the top end in the inner shell; force return springs are fixedly mounted among the fixed block, the limiting plates and the inner wall of the inner shell; and pneumatic dampers are fixedly mounted between the bottoms of the limiting plates and the car liner. The elevator car damping structure is simple and reasonable in structural design, convenient to operate,excellent in damping effect and stable in safety, reduces the shaking and the noise, reduces the overload and underload feeling, and improves the elevator passenger comfort.

The invention relates to a damper for wind power generation. The damper for wind power generation comprises a cylinder body and further comprises a damping friction plate with the self-lubricating performance. One face of the damping friction plate is fixed to the lower end of the cylinder body in a bonded or embedded manner. The other face of the damping friction plate is pressed on a connectingring plate of a tower cylinder. The damper has the beneficial effects of being simple in structure, stable in friction damping, low in cost and long in service life.

An electric tool includes a rotary wheel driven to rotate around a central axis thereof, an action member configured to bear a cutter of the electric tool, and a counterweight. The rotary wheel drives the action member such that it reciprocates linearly in a first direction. The rotary wheel simultaneously drives the counterweight such that it not only reciprocates linearly in the first direction in an opposite manner to the action member, but also performs reciprocating swinging movement in a plane perpendicular to the central axis. The first direction is parallel to the plane.

The invention provides a trolley limiting device of a magnetic suspension railroad switch. The trolley limiting device comprises a limiting component which is connected with a trolley foundation plateand a limiting shaft connected with a trolley crossbeam, wherein the free end of the limiting component is located on the free end of the limiting shaft, and is provided with a part which can be in contact with the free end of the limiting shaft. Through the adoption of the trolley limiting device disclosed by the invention, vibration generated on a trolley and a railroad switch beam when a magnetic suspension train passes can be reduced or removed; and the trolley limiting device is simple in structure and convenient to mount and maintain, so that the cost is low.

Disclosed is a current varying control method of double-coil of permanent mechanisms of vacuum circuit breakers. In closing process, a trip coil is reversely galvanized to offset a part of permanent magnet retaining force, to reduce closing action current, simultaneously adjust the current of a closing coil, and reduce iron core kinetic energy on the premise of ensuring instantaneous closing speed. In switching off time, the trip coil is directly galvanized, the closing coil is reversely galvanized or the trip coil is directly galvanized and the closing coil is directly galvanized. Voltage and current of the trip coil and the closing coil are sampled by a coil current measuring module, and collected data is fed back to a central control module. A central treatment module calculates rate of current change in current coils and adjusts current value in the trip coil according to calculated result. The invention adjusts current amplitude in coils by sampling feedback of current and voltage of the trip coil and the closing coil of a permanent mechanism, and enables the operating characteristic of the permanent mechanism and the spring load characteristic of the circuit breaker to realize ideal engagement.

The invention provides a dynamic balance adjusting device for a roll shaft. The dynamic balance adjusting device comprises a counterweight ring sleeved on the roll shaft, and a cylindrical cavity radially arranged on the counterweight ring. A rod-free piston is arranged in the cylindrical cavity, a water injection passage is arranged at one end of the cylindrical cavity, the water injection passage is communicated with the water injection port arranged on the outer surface of the counterweight ring, a water valve is arranged on the water injection port, the water injection passage side of the rod-free piston is filled with water, and the non-water-injection passage side of the rod-free piston is filled with air. Water is used as a counterweight, weight of the counterweight can be adjusted infinitely, and accordingly a dynamic balance index of the roll shaft is more accurate.

The invention relates to a cable pipeline structure in a spacecraft ventilating duct. The cable pipeline structure comprises a flange (1) and a connecting pipe (2), wherein the flange comprises a base(11) and a main body (12); the connecting pipe (2) is a hose with two layers of high-temperature resistant cloth; the connecting pipe (2) sleeves the main body (12), and the connecting pipe (2) and the main body (12) are fastened through a nylon ribbon. Through holes on the side wall communicate with the flange, and the hose and the flange are fastened through the nylon ribbon, so that the wholecable pipeline structure and the ventilating pipeline are mutually isolated, and the gas leakage in the ventilating pipeline is avoided; therefore, the airtightness of the whole ventilating pipeline is guaranteed.

The invention provides a damping device for mechanical equipment. The damping device for the mechanical equipment is simple and reasonable in structural design, can achieve the damping effect, improvethe damping effects and also can achieve the effect of stabilizing the equipment at the same time. The bearing capacity of the damping device can be adjusted according to the change of weights of different kinds of equipment, and the use flexibility can be greatly improved. The damping device for mechanical equipment comprises a lower plate and an upper plate. A damping mechanism is fixedly installed between the lower plate and the upper plate and comprises hydraulic dampers and a compressed air bin. An air inflation connector is welded to one side face of the compressed air bin. A damping column is welded to the middle of the top end face of the upper plate. Damping grease is arranged in the damping column. A bolt fixing hole is formed in the middle of the damping column.

The invention discloses a safety and environment-friendly cutting machine, which comprises a workbench, four outriggers are evenly and symmetrically arranged at the bottom of the workbench, a shock absorbing device is arranged at the bottom of the outriggers, and the top of the workbench is fixedly arranged sequentially from left to right The material propulsion device, the first material fixing device, the cutting device and the second material fixing device, the cutting device includes a cutting box and a cutting mechanism inside the cutting box. The beneficial effects of the invention are: when the cutting machine is working, the sparks and noises generated when the cutting saw is in contact with the material to be cut are greatly reduced or eliminated, and the metal or non-metal waste generated by cutting will not spread around, threatening The health of the staff, at the same time, the setting of the shock absorbing device makes the cutting machine work, the maximum reduction or elimination of the vibration of the cutting machine, thereby avoiding the damage of the internal parts of the cutting machine, which greatly prolongs the life of the cutting machine. service life.

This invention relates to a guide wire device when electric spark line cutting machine tool, which comprises retaining bracket and godet block, wherein the godet block is fixed in the retaining bracket, and on the surface of the godet block it has a couple of symmetrical camber intersecting to a V form slot in the bottom of the camber. Said invention has several merits as follows: a, it can eliminate or decrease the shake when the electrode line entering into the processing area, which ensures the stability of the electrode line in the processing area; b, the godet block is fixed, which avoids creating new shaking source; c, it divides the godet block into two same small units to produce.

The invention belongs to the technical field of power equipment, and provides a novel motor with a damping effect. The novel motor comprises a motor body. A bottom plate is arranged at the bottom of the motor body. Four corners of the bottom of the bottom plate are movably connected with one end of a telescopic device respectively, and the other end of the telescopic device is fixedly connected with a damping base. Each telescopic device is sleeved by an elastic device. One end of each elastic device is a free end, and the other end is fixedly connected with the damping base. Accommodating cavities are arranged at four corners of the damping base. Each accommodating cavity accommodates a telescopic device. Landing rods are movably arranged at four corners of the bottom plate. According tothe novel motor with the damping effect, the motor can be protected from vibration or collision through the damping protection design; the safety performance is improved; friction between a large shaft and a bearing is reduced; the temperature of equipment is reduced; and the service life of the motor is extended.

The invention discloses a leaky coaxial cable clamp mechanism and a leaky coaxial cable bearing system.The leaky coaxial cable clamp mechanism comprises a bearing support, a main clamp and at least two auxiliary clamps, the bearing support is fixed to an installation wall body, the main clamp and the at least two auxiliary clamps are all fixed to the bearing support, the at least two auxiliary clamps are arranged on the two sides of the main clamp at intervals, and the main clamp and the at least two auxiliary clamps are fixed to the bearing support. The auxiliary clamp can generate elastic deformation in the vibration state of the leaky coaxial cable so as to have a damping and buffering effect, and the main clamp is fixed relative to the bearing support in the vibration state of the leaky coaxial cable. According to the leaky coaxial cable clamp, the bearing requirement of the leaky coaxial cable can be met, the installation number of the leaky coaxial cable clamp mechanisms is effectively reduced, the situation that the bearing support is loosened due to the fact that the stress between the bearing support and the installation wall body is influenced by vibration can be avoided, the influence of the vibration on the stress between the main clamp and the leaky coaxial cable can be relieved or eliminated, larger clamping force can be applied to the leaky coaxial cable, and the leaky coaxial cable is prevented from being damaged. Therefore, the leaky coaxial cable is prevented from loosening, the safety performance is effectively improved, and axial displacement of the leaky coaxial cable under the action force of the tunnel wind tunnel effect is reduced or eliminated.

The invention provides a magnetic latch, a vehicle container and a system. A magnetic latch for a lid and a bin of a container in a vehicle includes at least one overmolded magnet removably connected to the lid. The metal portion is magnetically attracted by the overmolded magnet. At least one over-molded magnet is connected to the box having a magnetic attraction with the cover over-molded magnet to magnetically open and close the cover and the box of the container. An overmold on the magnet encapsulates the magnet with a vibration damping material, such as rubber. The metal portion may be a second at least one overmolded magnet. The container can be a central control board, a glove box, an ashtray, a luggage box, a skylight sunshade curtain and a cover. A lance, clip, fork, or other suitable fastener may be formed on one side of the overmold to allow insertion and attachment to a corresponding hole in the cover.

The invention discloses an adjustable damping type Cs axis continuous machining stabilizing device. The adjustable damping type Cs axis continuous machining stabilizing device comprises a mounting bracket. A hydraulic tank and a hydraulic motor are arranged in the mounting bracket. The hydraulic tank is connected with the hydraulic motor. A main shaft is arranged on the middle portion of the mounting bracket and penetrates through the mounting bracket. A brake disc is arranged on the end portion of the main shaft, and a braking damping device is connected to the brake disc and connected with the hydraulic tank. The hydraulic motor is connected with a pressure reducing valve connected with a reversing valve. The adjustable damping type Cs axis continuous machining stabilizing device is reasonable in design and simple in structure. By adjusting the pressure of a clamping device to make a mechanism generate certain damping, the vibration during Cs axis interpolation operation can be reduced or eliminated. The adjustable damping type Cs axis continuous machining stabilizing device is convenient to install and use, low in price and wide in application prospect.

The invention discloses a low noise frequency converter. The low noise frequency converter comprises, a passive filter, a prime amplifier, a prime mixer, an active filter, a second-level amplifier, a mixer, a final amplifier and an alternating current reactor which are sequentially connected, the prime mixer is connected with a fourth-level amplifier and a radiator, a frequency synthesizer is further connected to the fourth-level amplifier, and the frequency synthesizer is also connected with a power divider; the mixer is also connected with the radiator and a third-level amplifier, the third-level amplifier is also connected with a lock-in amplifier, the lock-in amplifier is also connected with the power divider, and the power divider is connected with a local oscillator providing 10 MHz signals. By means of the above principles, the low noise frequency converter can reduce noise, avoid damage of other mechanical components caused by vibration and reduce temperature to avoid overhigh temperature of the device and further enables the electronic element to work more stably.

An anti-tremor tool, an anti-tremor device thereof, and an auxiliary holding device are disclosed. The anti-tremor device includes a tool unit, a carrying portion, and an anti-tremor module. The toolunit is mounted on the carrying portion. The anti-tremor module is disposed on the carrying portion. The anti-tremor module includes a rotary transmission mechanism and a control module. The control module includes a sensing unit and a control unit. The sensing unit is coupled to the control unit, and the control module is coupled to the rotary transmission mechanism. When the sensing unit sensesthe tremor of the carrying portion, the control unit controls the rotary transmission mechanism to increase the inertia of the anti-tremor module to eliminate or reduce the tremor of the carrying portion.

A manual height-adjustment mechanism (MHAM) for a vehicle driveshaft, includes a movable bracket assembly configured to attach to the driveshaft and a vehicle cross-member; and a user input device remotely located with respect to the movable bracket assembly, configured to control the movable bracket assembly.

The purpose of the present invention is to propose a helical end mill that can reduce or eliminate harmonic vibration generated during processing, thereby improving processing quality and processing efficiency. The helical end mill of the present invention includes a shank and a cutting edge, and the cutting edge is provided with a plurality of parabolic side cutting edges along its own axial direction. The key point is that the helical angles of the plurality of side cutting edges are different. During the machining process, multiple side edges with different helix angles can generate a cutting motion of a different phase, thereby preventing the generation of resonance, thereby reducing or eliminating the vibration during machining, reducing the wear of the tool, and improving the cutting performance. Workpiece surface finish. The helical end mill of the present invention reduces or eliminates the harmonic vibration generated during processing by setting the unique helix angle and spacing of the side cutting edge, so it can perform high-speed processing or high-efficiency cutting, and the surface quality of the processed workpiece is stable and reliable. Tool life is increased by 28%, resulting in lower machining costs.