8results about How to "Reduce high frequency vibration" patented technology

The utility model belongs to the technical field of energy consumption detection, and relates to an installation structure of an energy consumption detection device, which comprises a fixing frame, an electrical groove is fixedly connected to the top of the outer side of the fixing frame, an electric wire is arranged in the electrical groove, a protection frame is fixedly connected to one side of the outer side of the fixing frame, and an energy consumption detection module is installed in the protection frame. According to the utility model, through the use of the fluid pipelines, the telescopic pipelines, the spring telescopic rods and the clamping rings, when the energy consumption detection module is installed and fluid passes through the interior of the energy consumption detection module, the flow velocity is reduced, and the occurrence of high-frequency vibration caused by the flow velocity is further reduced. And in the using process, a telescopic pipeline in the device is matched with a spring telescopic rod, so that the device is more rapid and convenient to disassemble and maintain in the using process, and the practicability and reliability of the device are further improved.

The utility model provides the pressure gauge device of liquid crystal combination instrument production facility belongs to production facility technical field. Including main part mechanism, elevating system and positioning mechanism, the main part mechanism includes base, the base upper end is erected with the frame, the frame four struts inside all are equipped with the slide bar, the base lower extreme is equipped with four groups of support leg, the frame is installed with elevating system, the elevating system includes upper connecting plate and lower connecting plate, upper connecting plate and lower connecting plate four ends all are equipped with the sliding block and slide bar sliding connection, the positioning mechanism includes the mobile tray, the base upper end is equipped with the slide rail, the slide rail with mobile tray sliding connection.

The embodiment of the utility model provides power system development and test equipment which is applied to the technical field of general test equipment. The equipment comprises a power system assembly rack and a rack base, the power system assembly rack comprises a real vehicle assembly, and the real vehicle assembly comprises front and rear wheels; wherein the front wheels are arranged on the surface of a corner disc of the rack base; the rear wheels are arranged on the surface of the roller assembly of the rack base; eyebolt sets are arranged on the first side of the rack base corner disc and the second side of the roller assembly respectively, and the power system assembly rack and the rack base are elastically connected through the eyebolt sets by using elastic connecting pieces. In this way, load feedback close to the working condition of a real vehicle can be obtained in a power system test, and the universality and debugging convenience of equipment are improved.

This utility model relates to a shock-absorbing lifting and moving base for a wire saw cutting device. It includes a lifting and moving base sleeved on the column of the wire saw cutting device. The inner side of the lifting and moving base is provided with several rolling wheels, which abut against the outer wall of the column. The lifting and moving base can move up and down on the column via the rolling wheels. The wheel body of each rolling wheel is covered with a shock-absorbing rubber sleeve. This utility model's lifting and moving base, through the rolling wheels' rolling abutment against the column and the shock-absorbing rubber sleeve on the rolling wheels, reduces the high-frequency vibration during stone cutting, thereby improving the durability of the equipment and the quality of stone cutting.

The invention belongs to the field of motors, and discloses a harmonic blocking type consequent-pole permanent magnet hub motor and a harmonic group differential vibration suppression method. The harmonic wave blocking type consequent pole permanent magnet hub motor provided by the invention adopts a harmonic wave trapping stator and a local magnetic short circuit magnetic barrier rotor structure under consequent poles to actively suppress the vibration source harmonic wave amplitude. The harmonic group differential vibration suppression method provided by the invention comprises the following steps: actively identifying a main vibration source under a current working condition, extracting a characteristic frequency of a superior harmonic group as a core optimization object, obtaining a Pareto leading edge and a solution set thereof under each working condition by adopting a multi-objective optimization method, taking an intersection of parameters of different working conditions, screening out a parameter set with optimal comprehensive performance, and carrying out differential vibration suppression on the Pareto leading edge and the solution set of the Pareto leading edge. The basic harmonic waves of the vibration source are classified into a monitoring layer, and monitoring temporary inactive compensation is carried out, so that differentiated accurate control is realized. According to the method, the limitation that a traditional method is fixed and single is overcome, and active suppression of the dynamic change main vibration source in the full working condition range of the consequent-pole permanent magnet hub motor is achieved.

The utility model provides a motor vehicle tail gas treatment and purification device, which belongs to the technical field of purification devices and comprises a purification mechanism, a heat dissipation mechanism is arranged on the peripheral side of the purification mechanism and comprises a sealing water jacket, the sealing water jacket used for storing heat conduction liquid is arranged on the peripheral side of the purification mechanism, and a heat dissipation pipe used for transporting cooling liquid is mounted in the sealing water jacket. The heat dissipation pipe is of a spiral structure and is wound around the periphery of the purification mechanism, one-way valves are arranged at the two ends of the heat dissipation pipe, an oxygen sensor and a temperature sensor are arranged at one end of the purification mechanism, a heat dissipation pipeline is arranged at one end of the purification mechanism, multiple sets of heat dissipation fins are arranged on the periphery of the heat dissipation pipeline, and a heat dissipation fan is installed at one end of the heat dissipation pipeline; through the arrangement of the heat dissipation mechanism, the heat dissipation pipe surrounds the purification mechanism, the heat conduction liquid is combined, the exhaust temperature is stabilized, when the motor vehicle accelerates urgently, the control module starts the heat dissipation fan for air cooling, the thermal expansion difference is reduced, the purification mechanism is prevented from cracking, and the problem that when the purification device is in an instantaneous high-temperature scene, the cooling efficiency is insufficient is solved.

The utility model discloses a device for bridge deformation monitoring and GNSS antenna installation, which relates to the field of GNSS antenna installation equipment and comprises a bridge fixing assembly, a GNSS connecting piece and a GNSS antenna connector connecting piece. A bridge fixing assembly is arranged at one end of the GNSS connecting piece, a GNSS antenna connector connecting piece is mounted at the other end of the GNSS connecting piece, the bridge fixing assembly comprises a plurality of fixing plates, mounting holes are formed in the fixing plates, the included angle formed by the joint of each fixing plate and the GNSS connecting piece is 90 degrees, the GNSS connecting piece and the GNSS antenna connector connecting piece are integrally formed, and the mounting holes are formed in the mounting holes. And the bridge fixing assembly is welded on the GNSS connecting piece. The problem that a traditional split type structure is complex in connection can be solved.

This invention relates to an aperiodic layered vibration isolator and its design method. The aperiodic layered vibration isolator comprises N or more sets of aperiodic unit structures connected in series, each set of aperiodic unit structures including a rubber layer and a metal layer. The design method of the aperiodic layered vibration isolator includes the following steps: determining the dynamic element stiffness matrix of each metal layer and rubber layer to obtain the unit transfer matrix of the vibration isolator; determining that the total transfer matrix of the aperiodic layered vibration isolator is the product of the transfer matrices of N elements, and obtaining its wave propagation characteristics through eigenvalue analysis of the transfer matrix of the vibration isolator; adjusting the thickness HM of each metal layer of the aperiodic layered vibration isolator. i and rubber layer thickness HR i The design parameters selected cover a wide range of wave-blocking frequencies. This invention improves upon existing periodic vibration isolators, broadening their wave-blocking frequency range. The layered structure also features simple design and compact space.