26401results about "Non-rotating vibration suppression" patented technology

The invention relates to the technical field of water quality detection, and discloses a water quality pollutant detection method, system and equipment based on spectral analysis, and the method comprises the following steps: carrying out real-time spectral data acquisition on a water body sample in a vehicle driving process through a multispectral sensor array in a vehicle-mounted water quality detection device; obtaining a water body spectrum three-dimensional data cube; carrying out anti-vibration wavelength calibration and ambient light source interference elimination processing to obtain a preprocessed spectrum data set; performing standard multivariate decomposition processing and horizontal local constraint optimization of a pollutant target wave band on the preprocessed spectrum data set to obtain enhanced feature fingerprint spectrums for different types of water quality pollutants; and inputting the enhanced feature fingerprint spectrum into a deep belief network model to perform pollutant feature matching analysis to obtain various pollutant types and corresponding concentration values in the water body sample, thereby effectively eliminating ambient light changes and other background interferences, not only determining the pollutant types, but also accurately quantifying the concentration values.

The invention provides a petrochemical pipeline corrosion defect detection device and method, and relates to the field of pipeline defect detection. The detection device comprises a mounting plate, and further comprises a battery box mounted on one side of the mounting plate, and the extension structure comprises a transmission assembly arranged on one side of the mounting plate, a rotating frame rotationally connected to the outer side of the transmission assembly and a push arm rotationally connected to the outer side of the transmission assembly and rotationally connected with the rotating frame; a connecting wire connected with the controller is mounted on one side of the electromagnetic ultrasonic thickness measuring probe; the servo motor drives the lead screw to rotate, the moving frame drives the rotating frame to turn over, meanwhile, the auxiliary wheels and the moving wheels are tightly attached to the interior of the pipeline, the size adjusting function is achieved, the device can easily adapt to pipelines with different inner diameters so as to deal with various complex working conditions, the universality and flexibility of the detection device are enhanced, and the detection efficiency is improved. The problem that the size of a pipeline corrosion detection device in the prior art is inconvenient to adjust is solved.

The invention relates to a low-frequency vibration isolator with a wide quasi-zero stiffness interval. The low-frequency vibration isolator comprises a bearing platform, a base, a first negative stiffness assembly, a second negative stiffness assembly and a linear vibration isolation assembly. The bearing platform and the base are arranged in parallel and are both provided with bolt holes and limiting holes; a linear vibration isolation assembly is installed between the bearing platform and the base. The first negative stiffness assemblies are symmetrically distributed with the center point connecting line of the bearing platform and the base as the symmetry axis. The top of the first negative stiffness assembly is connected with the bearing platform, and the bottom of the first negative stiffness assembly is connected with the base. The two ends of the second negative stiffness assembly are connected with the two first negative stiffness assemblies correspondingly. The low-frequency vibration isolator has the characteristics of high static rigidity and low dynamic rigidity, the contradiction between the bearing capacity and the vibration isolation performance of a linear vibration isolation system is effectively solved, and the effective low-frequency vibration isolation effect on a vibration-isolated object is achieved while the bearing capacity of the vibration isolator is guaranteed.

An information handling system peripheral mouse accepts scroll inputs at a scroll wheel extending from the upper surface of the mouse. The scroll wheel rotates about an axis and has a chamber inside a the wheel that is filled with MR fluid having particles that interact with a magnetic field so that the viscosity of the fluid varies based upon he presence of a magnetic field. A sliding magnet carrier moves magnets relative to the scroll wheel to adjust the MR fluid viscosity and the amount of haptic feedback created at blades within the chamber that resist the passage of the MR fluid.

The invention belongs to the technical field of cable installation, and particularly relates to a cable suspension damping rack in a tunnel, the cable suspension damping rack comprises a suspension assembly and a clamping assembly, the suspension assembly comprises a flange device and a suspension device, and the clamping assembly comprises an adjusting device and a clamping device; the flange device comprises a flange plate and a fixed anchor rod arranged on the flange plate; the suspension device comprises a T-shaped mounting rod and a connecting rod; an adjusting groove is formed in the upper portion of the T-shaped mounting rod in a penetrating mode, the connecting rod is inserted into the adjusting groove, mounting pieces are symmetrically arranged at the two ends of the connecting rod, mounting piece bodies are L-shaped, and nuts are mounted at the bottoms of the mounting pieces; an extrusion spring column is arranged above the adjusting groove, and the bottom end of the extrusion spring column is mounted on the connecting rod; according to the scheme, the cable suspension damping rack in the tunnel is efficient in damping, convenient to install, stable and durable; vibration energy, including longitudinal displacement, transverse shaking and high-frequency resonance, in the tunnel can be effectively absorbed through a multi-stage composite damping structure of the extrusion spring columns, the corrugated pads and the filling rubber.

The invention relates to a triangular rotating rigid body structure with compression and torsion characteristics, and belongs to the field of mechanical metamaterials, the triangular rotating rigid body structure comprises two kinds of tension cell element structures, and each cell element structure comprises a three-rod tension integral structure assembly and a degree-of-freedom constraint assembly. Under the action of a three-rod nine-cable tension integral structure, when the structure is not subjected to external load, the structure is subjected to interaction of internal stress, and the balance is achieved in a self-stabilization state; under the state of external load, the upper surface and the lower surface of the cell element structure can generate a torsion effect, and the structure can recover to the initial state after the external load is removed again. The triangular rotating rigid body structure with the compression torsion characteristic has the advantages of self-adaptability, self-recovery, indentation resistance characteristic and the like. The tensegrity structure and the mechanical metamaterial structure are combined, the types of existing mechanical metamaterial cell element structures are enriched, and a brand new direction is opened up for design, analysis and application of the tensegrity mechanical metamaterial structure.

The invention relates to a shock absorber and a shock absorption system, and belongs to the technical field of precise shock absorption. The shock absorber comprises a base, a top plate, a piston and a supporting piece, a cavity is formed in the side, facing the top plate, of the base, the piston is connected with the base in the cavity in the mode that the piston can move in the depth direction of the cavity, the piston and the cavity are sealed to form a sealed cavity, the piston is connected with the top plate through the supporting piece, and therefore the pneumatic assembly with the vertical vibration reduction function is integrated in the vibration damper. The air cavity and the piston of the pneumatic assembly are both arranged at the bottom of the shock absorber, so that the air cavity and the piston are prevented from occupying the space between the base and the top plate in the shock absorber, and due to the fact that the area of the area, where the air cavity can be arranged, of the shock absorber base is larger, the shock absorber base can be more compact under the condition that the thickness of the base is not increased or slightly increased. The air cavity and the piston are arranged in the shock absorber base, so that the device integration density can be improved, the space can be compact, and miniaturization and multi-functionalization of the shock absorber are facilitated.

An experimental model for simulating seismic soil evolution for a long-span bridge, comprising a vibration table (1), a long-span bridge model (2), damping control devices (3), vibration mechanisms (4), and cooperative control systems (6), wherein the long-span bridge model (2) comprises a plurality of bridge pier bases (21); the damping control devices (3) are fixedly connected between the bridge pier bases (21) and the vibration table (1); the vibration mechanisms (4) cooperatively drive the vibration table (1) to vibrate in the space; each cooperative control system (6) comprises a processor (61), an acceleration sensor (62) and a displacement sensor (63). A test method for dynamic response simulation of the experimental model comprises the following steps: the vibration table simulates an earthquake process, the damping control devices simulate soil evolution or geology of different sites, and the cooperative control systems acquire and collect acceleration and displacement data information of the damping control devices in real time and analyze structural responses of a long-span bridge. The experimental model can simulate seismic responses of a bridge under seismic site effects and non-uniform excitations, and has high authenticity and accuracy, a wide application range and low experimental cost.

The invention provides a vibration isolation device for early warning of a blockage approaching state of a separation device and the separation device. The vibration isolation device comprises an acceleration sensor, a rubber-damping plate combined bottom plate, a rhombic variable damping structure and a fixed magnet. A plurality of rhombic variable damping structures are arranged between the two rubber-damping plate combined bottom plates, and the acceleration sensor is located above one rubber-damping plate combined bottom plate; and a fixed magnet is arranged below the other rubber-damping plate combined bottom plate. Through the rubber-damping plate combined bottom plate and the rhombic variable damping structure, the interference of low-frequency vibration on monitoring signals of the acceleration sensor can be reduced, and the low-frequency vibration comprises but is not limited to low-frequency vibration generated by vibration sources such as an engine, a header and a conveying mechanism.

The utility model relates to the technical field of shock absorption, in particular to a rubber foot pad, which is applied to a compressor and comprises a supporting top seat, a supporting base, an anti-deviation structure and a rubber pad, the top of the supporting top seat is provided with a mounting part and a buffer area room, one end of the rubber pad is fixedly arranged at the bottom of the supporting top seat, and the top of the supporting base is fixedly connected with one end, far away from the supporting top seat, of the buffer area room. The mounting part is arranged at the bottom of the supporting base, and the mounting part, the supporting top seat, the buffer area room and the supporting base are all hollow, so that a polish rod at the bottom of a compressor can be inserted conveniently, and the damping effect of the rubber foot pad is improved by designing the buffer area room and changing rubber components, namely adjusting hardness and density; friction between the supporting base and a compressor chassis is increased, displacement caused by vibration is reduced, and therefore vibration and abnormal noise of an outdoor unit are reduced.

The invention relates to the technical field of wind power generation, and discloses a wind turbine generator set with a vibration reduction function and a construction method thereof.According to the wind turbine generator set with the vibration reduction function, a vibration reduction structure is additionally arranged, and the two elastic ends, arranged in the axial direction, of an elastic buffering piece are connected with the outer wall of a tower drum and the inner wall of a sleeve correspondingly; the elastic buffering piece can effectively absorb and relieve vibration of the sleeve, vibration impact borne by the tower drum is reduced, the overall stability of the wind turbine generator is improved, and safe and stable movement of the wind turbine generator is guaranteed. Compared with a conventional scheme that the diameter or the wall thickness of the tower drum is increased, the damping structure is simple in structure, convenient to install and maintain and low in cost.

An isolation system is provided. The isolation system is configured to isolate the translational vibration in the directions of an X-axis and a Y-axis and the torsional vibration around a Z-axis by being positioned between a ground and a load. The isolation system includes at least one base platform that can be associated with the ground, at least one load bearing platform that can be associated with the load, a plurality of beams positioned between said base platform and said load bearing platform in a symmetric way that there is equal distance and equal angle between them with respect to the central axis, multiple tensioning wires positioned adjacent to each beam or beam group so that there is at least one for that beam or beam group in order to bring the said base platform and said load bearing platform closer together.

The invention discloses a semi-submersible wave energy-wind energy integrated power generation platform and a damping regulation and control method of a damping regulation and control system of the semi-submersible wave energy-wind energy integrated power generation platform. The platform comprises a semi-submersible wind driven generator platform, a wind driven generator set, a wave energy power generation device, an energy storage system, a sea area detection system and the damping regulation and control system. The wave energy power generation devices are divided into two groups on the inner side and the outer side of the platform, each wave energy power generation device comprises a platform inner side wave energy power generation device and a platform outer side wave energy power generation device, and each wave energy power generation device comprises a swing arm floater, a universal hinge, a connecting arm and a damping adjusting module. The semi-submersible wind power generation device and the wave power generation device are combined, and offshore renewable resources are comprehensively utilized; the six-buoy design is adopted, buoyancy is dispersed, stability and safety are improved, and meanwhile space is provided for a wave power generation device; the floaters are symmetrically arranged in a hexagonal shape and carry a damping regulation and control system, and the whole structure is more easily stabilized by adjusting the damping of the floaters in all directions.

The invention relates to the technical field of hardness detection, in particular to detection equipment for gate valve machining and a detection method thereof. Comprising a base, multiple sets of supporting shafts are fixedly connected to the base, and a top plate is installed at the top ends of the multiple sets of supporting shafts; two groups of vertical plates are mounted on the top plate, and lifting assemblies are mounted on the two groups of vertical plates; two groups of fixing plates are arranged on the base, and two groups of protection mechanisms are arranged between the two groups of fixing plates; a third motor is arranged on one set of fixing plates, the output end of the third motor is in transmission connection with a second threaded rod, the lifting assembly drives the flashboard to move downwards into the two sets of protection mechanisms, the third motor drives the detection mechanism to extrude the flashboard for hardness detection, and the lifting assembly drives the flashboard to descend to different heights. Therefore, the deformation condition of the flashboard bearing the preset pressure value at different descending heights can be detected.

A suspension stabilizer and method are described which may be attached to a bike having front fork suspension to improve handling and reduce rider fatigue. The suspension stabilizer may include a counterweight, a spring assembly and a guide assembly. The spring assembly may be arranged to provide a spring force between the counterweight and the guide assembly to resist linear motion of the counterweight along a guide assembly axis. The counterweight and spring assembly may have a natural motion frequency of 3 to 15 Hertz and may be based on one or more characteristics of the front fork suspension.

The invention discloses a gravimeter active vibration isolation control method, and belongs to the technical field of gravimeter active vibration isolation, and the control method comprises the steps: S1, presetting a three-axis acceleration sensor and a gravimeter bearing platform, and detecting a space vibration signal of the gravimeter bearing platform in real time through the three-axis acceleration sensor; s2, the signal processing unit performs frequency domain decomposition on the space vibration signal; s3, establishing a feedforward control unit, a feedback control unit and a synthesis unit; s4, a multi-degree-of-freedom actuator is preset, and reverse compensation force is applied in the X-axis direction, the Y-axis direction and the Z-axis direction through the multi-degree-of-freedom actuator according to the composite control signal; and S5, the preset state monitoring unit samples the vibration suppression rates in three continuous sampling periods. The high and low frequency vibration components are dynamically divided according to the frequency-band energy accumulation proportion, the vibration interference model is established in combination with the high and low frequency vibration components, and compensation failure caused by model mismatch under complex working conditions is avoided.

This application provides a wind-resistant, stable power generation agricultural-solar hybrid system, including pillars, beams, photovoltaic supports, and photovoltaic panels erected in farmland. The photovoltaic panels are equipped with a buffer mechanism and an overload release device. The buffer mechanism effectively absorbs kinetic energy and reduces the swaying amplitude and speed of the photovoltaic panels through its elasticity, and automatically resets the photovoltaic panels after strong winds. The overload release device protects the photovoltaic panels from damage caused by strong winds. This application overcomes the technical defects of existing static wind-resistant systems, reduces system wind resistance, can withstand super typhoons, provide stable power generation and irrigation, and promote agricultural production.

Provided is a single degree of freedom vibration isolator / damper system capable of overload protection. The vibration isolator reduces vibration transmitted to or from an isolated spacecraft component that generates micro-vibrations. The system isolates sensitive components and vibration sources from the spacecraft. The system may consist of a 1) first spring element in series with a first damper element; 2) a second spring element in parallel with the first spring element and first damper element; and 3) a support member that serves as the overload protection device.

The invention relates to the technical field of transformers, in particular to a marine transformer with an anti-impact structure, which comprises a transformer main body, a base and a buffer box, and is characterized in that the transformer main body is horizontally limited and mounted on the base through a movable frame, and a buffer spring is arranged between the transformer main body and the base and is used for absorbing fine vibration during ship navigation; the buffer box is flexibly connected to the top of the transformer body through the supporting spring to adjust the oil quantity of the transformer body; a dynamic locking mechanism composed of a floating frame and a movable ball is arranged in the base, the movable ball supports the floating frame so that the transformer body can freely buffer vibration, and when a ship inclines greatly, the movable ball deviates so that the floating frame can move downwards. An oil fluctuation protection structure composed of an arc panel and a movable rod is arranged on the inner wall of the buffer box, when oil shakes violently, the movable rod is pushed to move outwards, and a lever type supporting rod is linked to make a bottom rubber wheel abut against the ground to form lateral supporting; the purpose of improving the marine impact resistance of the oil-immersed transformer is achieved.

The invention discloses a quasi-zero stiffness metamaterial vibration reduction mounting structure of an underwater vehicle hydrophone, which belongs to the technical field of underwater vehicles, and comprises an oil seal end cover mounted at the front end of a front fairing of an underwater vehicle, a mounting rack fixed at the front end part of the oil seal end cover, and two quasi-zero stiffness vibration reduction components arranged in front of and behind the mounting rack, the outer side parts of the quasi-zero-stiffness vibration reduction components are connected with the mounting frame, concave parts for clamping the end parts of the hydrophone are formed in the middle parts of the quasi-zero-stiffness vibration reduction components, and a mounting space for arranging the hydrophone is formed between the two quasi-zero-stiffness vibration reduction components; and the two ends of the hydrophone are respectively clamped and clamped in the concave parts of the two quasi-zero stiffness damping components. According to the quasi-zero-stiffness metamaterial damping device, through conformal design, vibration attenuation, structure optimization and energy-saving effects, an efficient, stable and low-noise hydrophone installation solution is provided for an autonomous underwater vehicle, and the performance of the quasi-zero-stiffness metamaterial damping device in underwater detection and signal acquisition is remarkably improved.

The invention relates to the technical field of vibration control, and discloses a quasi-zero stiffness vibration isolator imitating an insect jumping foot structure, which comprises a base and a bearing table between which a vertical spring is arranged, the two sets of connecting rod mechanisms are arranged between the base and the bearing table, each set of connecting rod mechanism comprises two lower connecting rods, two upper connecting rods and two middle connecting rods, the two lower connecting rods are hinged to the top face of the base, the two upper connecting rods are hinged to the bottom face of the bearing table, and the two middle connecting rods are distributed in an X shape; two ends of the two middle connecting rods are respectively hinged with the lower connecting rod and the upper connecting rod; the transverse springs are arranged at the hinged positions of the two lower connecting rods and the two middle connecting rods and the hinged positions of the two upper connecting rods and the two middle connecting rods correspondingly. The vibration isolator is simple in structure, small in transverse size, convenient to assemble and disassemble and easy to adjust, quasi-zero-stiffness vibration isolation is achieved through the special mechanical property of the overall structure, vibration energy can be efficiently absorbed, and the vibration isolator has wide application prospects in the field of low-frequency vibration control.

A head unit system for controlling an object includes a head unit device that include shear thickening fluid (STF) and a chamber configured to contain the STF. The chamber further includes a set of gates between a front channel and a back channel. The set of gates includes a bypass opening set. The head unit device further includes a piston housed at least partially radially within the chamber. The set of gates is configured to control flow of the STF between the front channel and the back channel to control rotational movement of the object.

The invention provides a battery pack mounting structure for a vehicle, which comprises a first battery mounting unit, and the first battery mounting unit comprises a first square frame, a second square frame and a third square frame which are sequentially arranged at intervals in the direction of a longitudinal beam; the first longitudinal supporting rod and the second longitudinal supporting rod are arranged in parallel; the third longitudinal supporting rod and the fourth longitudinal supporting rod are arranged in parallel; a first guard plate bracket; a first vertical rod, a second vertical rod, a third vertical rod and a fourth vertical rod; a plurality of rubber bushings or elastic connectors; a plurality of mounting brackets; the first connecting pieces are arranged on the first square frame, the second square frame and the third square frame; and the second connecting pieces are arranged on the first square frame, the second square frame and the third square frame. The first battery installation unit and the battery pack can be pre-installed in a factory, the first battery installation unit and the battery pack can be connected to the installation support on the longitudinal beam only through a rubber bushing or an elastic connecting piece on site, the length is adjustable, light weight is achieved, and the invention further provides an installation method of the battery pack for the vehicle.

The present invention discloses a double-annular strong magnetic array nonlinear dynamic vibration absorber and design method for suspension vibration reduction, which belongs to the field of structural vibration control. The installation position and quantity are designed according to the vibration reduction requirements, and one is usually installed at the midpoint of the suspension. The vibration absorber comprises inner and outer magnetic ring arrays, counterweights, universal wheels and a base. It feeds back the control force in the opposite direction of the suspension vibration during movement, so that the suspension vibration energy is transferred to the vibration absorber and then less returned to the suspension, and the energy is dissipated through friction between the universal wheel and the base, the installation of air dampers and other measures. It introduces nonlinear stiffness, so that the optimal parameter domain range is expanded from the line domain to the surface domain, and thus has the outstanding advantages of easy parameter tuning and high vibration reduction robustness, and is easy to install, durable, and requires no or less maintenance. It is applicable to single, double and four-cable suspensions, and is expected to achieve the goal of good vibration reduction effect throughout the life cycle of the suspension, which has positive significance for ensuring driving and bridge safety and extending the service life of the suspension.

The all-metal vibration isolation buffering device comprises a bearing base, a center disc is arranged in the center of the bearing base, a buffering pad is arranged between the center disc and the bearing base in a clamped mode, and a plurality of vibration isolation structures are evenly distributed on the periphery of the center disc in a circumferential mode; and the vibration isolation structure is telescopically connected with the central disc. Due to the excellent high and low temperature resistance, fatigue resistance and omni-directional vibration isolation and buffering performance, an efficient and stable vibration isolation and buffering effect can be provided in an extreme environment. The all-metal multidirectional vibration isolation buffer structure can replace a traditional rubber vibration isolator, is applied to the fields of spaceborne, aerospace, precise instruments, ship equipment, high-speed traffic and the like, and is used for reducing the influence of vibration on key equipment, improving the stability of a system, prolonging the service life of the system and meeting the application requirements of high reliability and long service life.

The utility model relates to a mounting frame for solar photovoltaic components, which includes: a base support component, the bottom end of which is fixedly arranged on the upper surface of an object for receiving solar energy for photovoltaic power generation; a platform, which is in a horizontal position; two support frames, which are arranged on the opposite side edges of the platform; a brake and a support, which are arranged in the longitudinal direction and are located on the opposite side edges of the platform that are different from the support frames; the brake can be extended up and down, and the support can be extended up and down in a driven state; a fixing mechanism, which is used to fix the photovoltaic panel, and the fixing mechanism can rotate along the axis formed by the upper ends of the two support frames, and the upper ends of the brake and the support are connected to the bottom surface of the fixing mechanism, and the moving member is extended up and down, driving the fixing mechanism, the photovoltaic panel and the horizontal plane to adjust the angle to the required angle. According to the flexible connection of the mounting frame for solar photovoltaic components of the utility model, only one brake is needed to achieve the angle adjustment of the photovoltaic panel.

The invention relates to the technical field of excavator bucket rods, and provides a bucket rod composite damping device and an excavator. The device comprises a shell composed of a base, an outer shell and a stress shell; the magneto-rheological buffer device is installed in the shell and composed of a lattice structure made of magneto-rheological elastomer materials and magneto-rheological fluid filled in gaps corresponding to the lattice structure, and a plurality of sound absorption holes are formed in each cell element wall in the lattice structure; the electromagnetic device is located in a containing cavity formed in the lattice structure and is composed of a magnetic core and an electromagnetic coil; the anti-vibration pad and the stress plate are embedded in the top of the shell and are in contact with the stress plate; the damping springs are arranged on the periphery of the shell and fixedly connected between the stress plate and the base; the vibration monitoring module is used for collecting vibration data of the bucket rod in real time and transmitting the vibration data to the intelligent control module, and the intelligent control module is used for adjusting the output magnetic field intensity of the electromagnetic coil according to the vibration data so as to adjust the viscosity of the magnetorheological fluid in real time.

The invention discloses a liquid elastic active vibration isolation device and a control method, and relates to the technical field of vibration isolation devices. A mounting hole is formed in a first cavity structure; the second cavity structure comprises a channel part and a buffer part; the channel part is inserted into the mounting hole, a magnetorheological elastomer is connected between the outer peripheral wall of the channel part and the inner peripheral wall of the mounting hole in a sleeving manner, and the magnetorheological elastomer is matched with a first magnetic field; a partition plate is installed in the buffering part, the part, located on one side of the partition plate, of an inner cavity of the buffering part communicates with the channel part, a buffering structure is arranged on the part, located on the other side of the partition plate, of the inner cavity of the buffering part, and the buffering direction of the buffering structure is the same as the sliding direction of the partition plate. The magnetorheological fluid is provided with a second magnetic field in a matched mode, the magnetic field direction of the second magnetic field is perpendicular to the flowing direction of the magnetorheological fluid, and the rigidity and damping of the whole device can be adjusted by controlling the sizes of the magnetic fields borne by the magnetorheological elastomer and the magnetorheological fluid respectively, so that the vibration isolation frequency band and the vibration isolation effect of the whole device are adjusted, and the optimal vibration isolation target is achieved.

The present invention proposes a pan-tilt device for optical axis calibration of optoelectronic equipment, comprising: a lifting unit, an azimuth unit and a pitch unit; the optical axis calibration support device provided by the present invention provides a device for rapid auxiliary calibration of the consistency of multiple sensors of the optical axis of an optoelectronic equipment load assembly and consistency control of batch products, which solves the problem of maintaining consistency and efficient adjustment of the optical axis calibration of multiple sensors of the optical load assembly of optoelectronic equipment during batch production of optoelectronic products; further, the embodiments of the present invention aim at the problems existing in the prior art and have made improvements one by one in terms of the rationality of weight and size, multi-dimensional motion characteristics, and ease of operation.