374 results about "Transverse vibration" patented technology

The invention discloses a nickel-based alloy additive manufacturing method for high-frequency ultrasonic dynamic forging printing. The method comprises the steps that nickel-based alloy powder and a base plate are pretreated; scanning the nickel-based alloy powder layer by layer through laser to form a molten pool; in the machining process of each layer, when the temperature of the molten pool ranges from 1000 DEG C to 1400 DEG C, ultrasonic waves are activated to generate compound vibration; the composite vibration comprises axial vibration and transverse vibration; when the ultrasonic vibration phase difference reaches a preset first interval, short pulse laser is triggered; the ultrasonic vibration phase difference is a phase deviation between an ultrasonic vibration waveform and a pulse laser shock triggering moment; and until all layers are machined, a formed part is obtained. According to the scheme, the dislocation density is improved, secondary grain refinement and bubble escape are achieved, and interlayer stress redistribution is made uniform.

The utility model discloses a wafer processing device, and belongs to the technical field of semiconductors. The wafer processing device comprises a carrying table, a shock insulation pad and an ultrasonic device, wherein the carrying table is used for carrying a crystal ingot with a modified layer; the ultrasonic device is arranged above the carrying table, the ultrasonic device can generate transverse vibration waves, and the transverse vibration waves are used for vibrating along the crystal ingot and enabling cracks of the modified layer to extend in the transverse direction; and the bottom of the carrying table is fixedly arranged on the shock insulation pad. According to the utility model, the cracks of the modified layer formed on the crystal ingot by the laser pulse grow and are connected along the transverse direction, the longitudinal growth of the cracks is avoided, the production efficiency of the modified layer is improved, the laser pulse does not need to be intensively emitted, and the wafer processing period is shortened.

The utility model discloses a self-supporting deepwater transducer based on relaxor ferroelectric single crystal, which comprises a certain number of transducer units, and each transducer unit comprises a piezoelectric element, a transition block, a bending shell, a force transmission plate and a radiation panel, the piezoelectric element adopts a relaxor ferroelectric single crystal element; the bending shell is in a VII type flextensional transducer shell form with a long shaft and a short shaft vibrating in the same phase, a force transmission plate is additionally arranged on the outer side of the short shaft of the shell, a certain number of transducer units are arranged according to a certain rule, and the two ends of the transducer units are connected with radiation panels through the force transmission plates. Transverse vibration of the single-crystal element is subjected to displacement amplification on the short axis of the shell through the bent shell, the force transmission plate transmits the vibration to the radiation panel, and the radiation panel is used for reducing the working frequency, unifying the vibration phase of the transducer unit, directly facing fluid to bear hydrostatic pressure and isolating the internal space from the external fluid. The static pressure of external fluid acts on the radiation panel and acts on the shell short shaft through the force transmission plate.

The invention discloses a base fixed type multi-connecting-rod motion system and a control method and device thereof, belongs to the technical field of mimicry simulation of a mechanical environment, and particularly relates to a structure design and control technology of a six-degree-of-freedom parallel motion system. The problem that transverse vibration of a hydraulic cylinder and nonlinear factors of a system of an existing conventional hydraulically-driven six-degree-of-freedom parallel mechanism limit improvement of the system bandwidth is solved, and the system bandwidth is improved to 100 Hz; the system comprises a mechanical structure subsystem, an acceleration detection subsystem and a servo control subsystem, and the hydraulic actuator is used for performing telescopic motion based on the motion instruction to drive the connecting rod to swing, so that the platform moves and presents different postures. The base fixed type multi-connecting-rod motion system and the control method and the control device thereof are suitable for structural design and control of a six-degree-of-freedom parallel motion system.

The embodiment of the invention provides a simple system for simulating fluctuating motion of ocean conditions, and relates to the field of ocean-related simulation experiments. The device comprises a base, a translation seat, a stand column, a top beam, a lifting seat, a simulation water tank and a transverse vibration mechanism, the translation seat is installed on the base, the stand column is installed on the translation seat, the top beam is installed at the top end of the stand column, the lifting seat is installed on the stand column in a sliding mode, and the simulation water tank is installed on the lifting seat; the translation seat is mounted on the base through a transverse vibration mechanism, and the transverse vibration mechanism can enable the translation seat to do transverse reciprocating motion. Transverse waves can be generated, and corresponding wave fluctuation can be simulated; meanwhile, longitudinal waves can be generated, so that wave fluctuation generated by the longitudinal waves is simulated; the equipment has the two capabilities at the same time, can be selected according to requirements, and is high in universality. In addition, the device can enable the liquid to quickly recover calm, facilitates the switching of different seismic source modes for simulation testing, and improves the efficiency.

This invention discloses a magnetorheological vibration isolator with negative stiffness characteristics, comprising a magnetorheological elastomer (MRE), an iron sheet, a circular magnet, a cylindrical central shaft, an electromagnetic coil, upper and lower base plates, an outer sleeve, and a bar magnet. The MRE, iron sheet, and circular magnet form a multi-layered MRE structure, with the circular magnet providing a portion of the initial magnetic field to the MRE. The electromagnetic coil, located between the multi-layered MRE structure and the outer sleeve, can control the magnetic field strength acting on the MRE in real time, thereby controlling the stiffness and damping of the MRE isolator. The bar magnet and magnet brackets form a negative stiffness generating unit, respectively installed on both symmetrical sides of the isolator. This invention introduces negative stiffness characteristics into a semi-active vibration isolator, improving the vibration reduction effect of semi-active control to the level of active control, while also offering good stability and low system cost. This invention can be applied to lateral vibration control in high-speed trains, improving stability and safety during high-speed operation, and has broad application prospects.

The utility model discloses a heavy metal contaminated soil multidirectional leaching device which comprises a leaching box, and a base is fixedly arranged at the bottom end of the inner wall of the leaching box. The top end of the base is connected with a top plate through an up-down reciprocating vibration structure, and shaft seats are fixedly arranged at the four corners of the top end of the top plate. Then the rotating shaft is connected with the centrifugal position of a shaking disc in a penetrating mode, in the rotating process, the shaking disc makes contact with the side wall of the soil containing box and is matched with a spring on the outer wall of a sliding rod, the soil containing box can transversely shake, and an up-down shaking structure can help to achieve vertical mixing of soil; and the transverse vibration structure can promote uniform distribution of the soil in the horizontal direction, so that uniform mixing and full mixing of the soil and the leacheate are achieved, the soil at the bottom of the soil containing box is turned to the top, and the soil leaching efficiency is improved.

The present invention belongs to the technical field of plant pollination devices, and particularly relates to a handheld electric fruit tree pollinator and a pollination method. The handheld electric fruit tree pollinator includes: a depth camera (1), a lateral vibration motor (2), a lateral vibration motor cover (3), a solenoid valve (4), a solenoid valve cover (5), a sealing ring (6), a filter screen (7), a filter screen connecting piece (8), a fluff brush connecting piece (9), a fluff brush (10), a longitudinal vibration motor cover (11), a longitudinal vibration motor (12), a powder chamber cover (13), a powder chamber (14), an elastic rod (15), a screw (16), a multi-joint arm hand rod (17), and an intelligent controller (18); the present invention is convenient to carry and simple to operate; the solenoid valve is closed in the non-working state, reducing pollen waste; based on the pollination principle of insects (bees), the pollen is charged with static electricity through the fluff brush and high-frequency vibration, improving the pollination success rate and reducing the damage to the inflorescence.

The invention discloses metal plate surface scraping equipment which comprises a frame body used for containing metal plates, supporting parts used for bearing electrode lugs of the metal plates are arranged on the frame body side by side, and the metal plates are arranged in the frame body at equal intervals; and the number of the moving parts is two, and the two sets of moving parts are movably arranged in the supporting part. In the process that the cleaning scraping table is driven by the lifting mechanism to ascend, the inclined scrapers arranged in the cleaning scraping table are attached to the two sides of the metal plate under the action of the one-way locking pieces, then in the process that the cleaning scraping table is driven by the lifting mechanism to descend, the inclined scrapers are used for scraping away protrusions protruding out of the surface of the metal plate, and in the process, due to the arrangement of the vibration support, the protrusions are scraped away; the abutting protrusions at the two ends of the vibration support are meshed with the vibration racks arranged on the two sides of the vibration support in a staggered mode, translation action can be generated, transverse vibration is generated in the downward movement cutting process so as to cut protrusions, and the scraping efficiency is improved.

The invention relates to the technical field of transformer vibration testing, and discloses a transformer vibration testing device and method.The transformer vibration testing device comprises a transverse vibration mechanism, a vertical vibration mechanism and a rack mechanism, according to an occasion needing simulation, an inclined rack is controlled to obliquely swing around a first horizontal axis to a set inclination angle relative to a rotary rack, and the inclined rack is driven to rotate; meanwhile, the tool rack is controlled to obliquely swing around a second horizontal axis to a set inclination angle relative to the inclined rack, so that the transformer is controlled to obliquely swing around a first horizontal axis and the second horizontal axis, coupling inclined swing control is achieved, and the transformer can swing to a set inclination posture in any direction in a three-dimensional space; the rotating rack is driven by the rotating driving structure to rotate relative to the vertical vibration table so as to drive the transformer to rotate, excitation vibration on the periphery of the transformer can be achieved in a rotating mode under driving of the transverse vibrator, and the testing cost can be reduced.

The invention provides a quick calculation method and system for vibration response of a shaft system of a diesel engine, and the method comprises the steps: simplifying a crankshaft system and stress of the diesel engine, and obtaining a simplified model of the diesel engine; on the basis of a straight beam unit, a transverse vibration transfer matrix, a longitudinal vibration transfer matrix and a torsional vibration transfer matrix of a straight beam are established respectively, and a spatial continuum transfer matrix of the straight beam is calculated; establishing a point transfer matrix of coordinate transformation at each section of straight beam connection point through a force balance condition and a displacement coordination condition; lapping a transfer matrix from a single crank to the whole crankshaft system according to the spatial continuum transfer matrix of the straight beam and the point transfer matrix of coordinate transformation; constructing a kinetic equation according to a transfer matrix from a single crank to the whole crankshaft system; calculating the inherent frequency of the crankshaft system according to the kinetic equation; the method comprises the following steps: loading an exciting force map on a crank pin of a crankshaft system, and solving forced vibration response of any point on a crankshaft by using a Newmark-beta method.

The invention belongs to the technical field of buildings, and particularly relates to an anti-seismic and shock-absorbing structure for a beam type bridge, which comprises a main beam and a bridge body, the bottom of the bridge body is fixedly connected with a first fixing plate; a plurality of groups of first fixing plates are arranged at the bottom of the bridge body; the bottom of the first fixing plate is fixedly connected with a damper. A plurality of groups of dampers are arranged at the bottom of the first fixing plate and are uniformly distributed at the bottom of the first fixing plate; the ends, away from the first fixing plate, of the dampers are jointly and fixedly connected with a second fixing plate. According to the step, through arrangement of a first fixing plate, a damper, a second fixing plate, balls, damping springs and a baffle, longitudinal vibration is weakened by the damper, transverse vibration is weakened by the damping springs, and the second fixing plate moves on the top of the main beam through the balls, so that the situation that the damper is twisted and damaged when transverse vibration is transmitted is reduced; the stability of the device during shock resistance and shock absorption is improved, and the service life of parts is prolonged.

The invention relates to the technical field of insulator fault early warning, in particular to an insulator mechanical pulse electrification early warning system. The system comprises a pulse signal acquisition module which is used for setting sampling points at equal intervals at each height of an insulator and acquiring vibration pulse signals of the sampling points; the vibration abnormity identification module is used for determining the transverse vibration abnormity degree and the longitudinal vibration abnormity degree of the vibration pulse signal of each sampling point; the pulse signal denoising early warning module is used for acquiring a standard comprehensive abnormal index of the vibration pulse signal of each sampling point; identifying the non-low-frequency energy intensity of the vibration pulse signal of each sampling point, and adjusting a fixed threshold value in a wavelet denoising algorithm in combination with the standard comprehensive abnormal index so as to perform defect early warning on the insulator by using the denoised vibration pulse signal; according to the invention, the accuracy of defect early warning of the insulator is improved.

The invention discloses an aviation transmission part fretting friction wear test device and method, and belongs to the field of aerospace manufacturing, and the device comprises a supporting assembly, an axial force loading assembly, a transverse vibration assembly, a first test piece and a second test piece; the supporting assembly comprises a vibration platform, a first support and a second support, the first support is fixed on the vibration platform, the axial force loading assembly comprises a sliding plate, a servo motor, a lead screw and a nut, the sliding plate is in sliding connection with the vibration platform, the servo motor is connected with the lead screw, the nut is fixedly connected with the sliding plate, and the second support is fixed on the sliding plate; the transverse vibration assembly comprises a variable frequency motor, an eccentric wheel, a connecting rod, a vibration rod and a limiting plate, the variable frequency motor is fixed to the sliding plate, the eccentric wheel comprises a rotating shaft and an eccentric shaft, the variable frequency motor is in transmission connection with the rotating shaft, and one end of the connecting rod is rotationally connected with the eccentric shaft while the other end is rotationally connected with the vibration rod; therefore, the working condition of the aviation transmission part in a transverse vibration environment can be simulated.

The utility model discloses a multi-dimensional vibration manufacturing test device which comprises a vibration plate, the lower end face of the vibration plate is fixedly connected with a fixing frame, the upper end face of the fixing frame is fixedly connected with a vibration motor, the upper end face of the vibration plate is slidably connected with a second sliding plate, the upper end face of the second sliding plate is slidably connected with a first sliding plate, and the upper end face of the first sliding plate is fixedly connected with a positioning block. The upper end face of the positioning block is fixedly connected with a driving motor, the output end of the driving motor is connected with a rotating shaft, the outer wall of the rotating shaft is fixedly connected with a cam, the whole vibration plate vibrates through operation of the vibration motor, and vibration testing of products on the mounting plate is achieved; the cam is in contact with the movable block in the rotating process and abuts against the movable block to move up and down in a reciprocating mode, the first sliding plate drives the mounting plate to conduct transverse vibration testing, the second sliding plate drives the mounting plate to conduct longitudinal vibration testing, multi-dimensional vibration of the vibration testing device is effectively achieved, and the using flexibility of the device is improved.

The invention provides an ultra-deep well large annulus flexible righting transverse vibration reduction method, which belongs to the technical field of well drilling and drilling, and comprises the following steps of: inputting pre-drilling well drilling engineering information, and calculating a whole well section drill string vibration distribution form based on an established drill string finite element dynamic model; the tripping-in positions and the number of the flexible stabilizers and the layer number and the compression space of plate springs in the flexible stabilizers are designed, and an initial vibration reduction scheme is generated; comparing the real-time vibration data with the predicted vibration distribution pattern, carrying out real-time risk assessment, carrying out dynamic optimization on the initial vibration reduction scheme according to the real-time risk assessment, adjusting the tripping-in position and number of flexible stabilizers, the number of plate spring layers and the compression space, and generating an optimized real-time vibration reduction scheme; a flexible stabilizer is put in the designated position of the drill column; when the drill column transversely vibrates and collides with the well wall, the buffer block of the flexible stabilizer is pressed, the plate spring is driven to generate radial elastic deformation, part of radial impact kinetic energy is converted into elastic potential energy of the plate spring to be stored, and radial vibration reduction is achieved.

The present invention discloses a micro-friction and wear testing device and method for aviation transmission components, which belongs to the field of aerospace manufacturing. The device comprises a support assembly, an axial force loading assembly, a lateral vibration assembly, a first test piece and a second test piece. The support assembly comprises a vibration platform, a first support and a second support, the first support is fixed on the vibration platform, the axial force loading assembly comprises a sliding plate, a servo motor, a lead screw and a nut, the sliding plate is slidably connected to the vibration platform, the servo motor is connected to the lead screw, the nut is fixedly connected to the sliding plate, and the second support is fixed on the sliding plate; the lateral vibration assembly comprises a variable frequency motor, an eccentric wheel, a connecting rod, a vibration rod and a limit plate, the variable frequency motor is fixed on the sliding plate, the eccentric wheel comprises a rotating shaft and an eccentric shaft, the variable frequency motor is transmission-connected to the rotating shaft, one end of the connecting rod is rotationally connected to the eccentric shaft, and the other end is rotationally connected to the vibration rod, thereby simulating the working condition of the aviation transmission component in a lateral vibration environment.

A field of electric drive devices and electric machines, such as electric motors and electric generators for industrial applications, and more particularly to a method, an arrangement and a frequency converter for controlling lateral vibration of an electric machine. The arrangement of the present invention for controlling lateral vibration of an electric machine includes a frequency converter, one or more vibration sensors and an electric machine, wherein the one or more vibration sensors is / are arranged for measuring the lateral vibration from the electric machine and for producing measured vibration data; and wherein the frequency converter is arranged for generating a control torque for exerting the control torque on the stator of the electric machine, the control torque being determined utilizing the measured vibration data.

The invention relates to a variable-amplitude hydraulic oscillator, and belongs to the technical field of petroleum and natural gas well drilling matching tools. The tool aims at solving the problems that a traditional hydraulic oscillator is single in vibration mode, and equipment is prone to damage and low in efficiency due to the fact that the amplitude cannot be adjusted. The device structurally comprises a flow conversion short section, an axial vibration short section, a power short section and a radial vibration short section which are connected in sequence. The flow conversion short section achieves switching of a high amplitude mode, a low amplitude mode and a closing mode through the synergistic effect of a hole-shaped piston, a ratchet wheel and a flow channel conversion mandrel and by means of interruption and recovery of fluid flowing. The axial vibration short section adopts a two-stage piston structure to generate efficient axial vibration, the power short section is matched with a dynamic valve plate and a static valve plate through a screw rotor to generate high-frequency pressure pulses, and the radial vibration short section forms transverse vibration by means of centrifugal movement of a pendulum ball. By adjusting the fluid path, the tool can output shock waves of different amplitudes, friction between a drilling tool and the well wall is reduced, and meanwhile fluid pressure is maintained in a closed mode so that clamping stagnation of a pipe column can be avoided. The invention has the beneficial effects of prolonging the service life of equipment, improving the drilling efficiency, reducing the risk of jamming of the drilling tool and adapting to complex formation conditions.

The invention discloses a multi-dimensional vibration and vibration control method and system for a large-span suspension bridge. The method comprises the steps that different constraining forces are generated on the suspension bridge under the low-speed, medium-speed and high-speed working conditions through temperature self-adaptive spring dampers; through the vertical tension and compression support and the vertical eddy current damper, constraining force is provided or eddy current and damping force are generated, and vertical vibration energy is consumed; when torsional mode vortex-induced vibration of a main beam is monitored, the variable-frequency mass tuning system changes the frequency and damping ratio of the system, absorbs and consumes vibration energy and inhibits torsional mode vortex-induced vibration by adjusting the position of a mass block on a guide rail and matching with adjustment of parameters of a spring and a damper; when the transverse vibration of the main beam is caused by strong wind or earthquake, the transverse vibration energy is absorbed and consumed through the elastic damping wind-resistant support, and the vibration amplitude of the main beam in the transverse bridge direction is reduced; and multi-dimensional vibration caused by environmental loads such as temperature, strong wind, vehicles and earthquakes is effectively reduced.

The utility model provides a fluid medium pressure gauge adopting an embedded damping device, which comprises a damping plate, bottom plates are arranged on two sides in a sliding chute, a supporting seat is movably arranged at the top of each bottom plate, an outer protection plate is mounted at the top of each supporting seat, and a pressure gauge body is mounted on each outer protection plate. An inner buffer rubber block is arranged between the bottom of the pressure gauge body and the outer protection plate; according to the utility model, the top of the damping plate is provided with the supporting seat sliding on the bottom plate, the top of the supporting seat is provided with the outer protection plate, the pressure gauge body is supported by the outer protection plate, and one side of the supporting seat is provided with the damper, so that the pressure gauge body can be damped through cooperation of the supporting seat and the damper when being subjected to transverse vibration; and meanwhile, the inner buffer rubber block is arranged between the pressure gauge body and the outer protection plate, so that the transmitted vibration can be reduced through the inner buffer rubber block when the pressure gauge body is subjected to vertical vibration, and the impact on the pressure gauge body is reduced.

The present invention provides a multi-directional vibration identification fault-tolerant sensor, comprising a housing, a slider, a stopper, and a plurality of side blocks; the upper portion of the slider is connected to the top of the housing via a first elastic member, the side of the slider is provided with a plurality of first nanomaterial friction layers spaced apart, and the first nanomaterial friction layers are inclined; the stopper is fixedly provided below the slider; each side block is connected to the stopper via a second elastic member, the upper end of each side block is provided with a first metal electrode inclined, each first metal electrode is fitted with a first nanomaterial friction layer, the outer wall of each side block is provided with a second nanomaterial friction layer, and a second metal electrode is provided on the inner wall of the housing at a position opposite to each nanomaterial friction layer. The present invention has the following beneficial effects: the frequencies of axial vibration and lateral vibration are measured simultaneously, and the cooperation of the stopper, the side block, and the second elastic member isolates the axial vibration from the lateral vibration, thereby reducing the overall measurement error.

The invention discloses laser datum line alignment calibration equipment for printing registration, and relates to the technical field of laser instrument calibration. Comprising a mounting table, a suspension mounting mechanism is arranged at the top of the mounting table and used for reducing vibration conduction during operation of the printing equipment, and a linear adjusting mechanism is mounted on the bottom wall of the mounting table. The defects that a traditional lead screw sliding block has a residual gap and is prone to being affected by vibration to move are overcome in a targeted mode, a triangular locking piece can convert transverse vibration force into longitudinal compression force, and it is guaranteed that the locking piece is accurately embedded into a locking groove to achieve mechanical locking in cooperation with limiting guiding of a lug block and a lug groove. After the electromagnet is powered on, secondary fixing is formed through attraction force to be tightly attached to the locking piece and the inner wall of the locking groove, residual gaps are thoroughly eliminated, the double locking enables the position precision and the anti-vibration stability of the laser emitting device to be higher, and it is guaranteed that a datum line is accurate and stable in the whole printing process.

The application provides a bearing assembly for chemical mechanical polishing, comprising a damping module, a driving module and a bearing head; wherein the damping module comprises a spindle with a cavity inside and a first damping unit in the cavity, the first damping unit comprises a core and a plurality of damping blocks arranged on the outer wall of the core, the damping blocks extrude the inner wall of the cavity to absorb the transverse vibration of the spindle. The core is placed in the spindle, which enhances the damping and anti-vibration effect, in addition, the plurality of damping blocks arranged on the outer wall of the core can absorb the transverse excitation generated from the polishing head grinding, the compression resistance of the damping blocks is fully utilized, the original shearing and tensile working state is changed to a compression working state, the transverse damping capacity is increased, and the reset and limiting effects are also exerted.

The invention discloses a concrete flat plate vibrator for house building ground construction, and relates to the field of building construction equipment, the concrete flat plate vibrator comprises a vibrating plate, a fixing frame, a vibrating component, a driving component and a connecting component, the vibrating component is installed on the vibrating plate, the vibrating component comprises a driving shaft A and a driving shaft B, and the driving shaft A and the driving shaft B are both rotatably installed on the vibrating plate; two eccentric blocks are fixedly arranged outside the driving shaft A and the driving shaft B in a sleeving manner; the rotating directions of the driving shaft A and the driving shaft B can be controlled by switching the driving component between the first state and the second state, so that the device adapts to different construction scenes, in the first state, the rotating directions of the driving shaft A and the driving shaft B are opposite, horizontal vibration is offset, and the device is suitable for scenes needing to reduce transverse vibration, and in the second state, the rotating directions of the driving shaft A and the driving shaft B are opposite. The driving shaft A and the driving shaft B rotate in the same direction and generate vibration in the horizontal direction and the vertical direction at the same time, and the device is suitable for scenes needing horizontal vibration to assist in paving.

The present invention belongs to the technical field of fastener testing. The present invention discloses a fastener lateral vibration testing machine, which includes a testing machine main body. A platform is fixedly connected to the testing machine main body. A notch and a placement groove are formed in the testing machine main body. By setting a reciprocating impact assembly, during the lateral vibration of the fastener, the vibration motor is started to apply lateral vibration to the fastener through the platform and the vibrating body. This kind of vibration is high-frequency vibration. The second motor is started to drive the round block and the top column to rotate. During the rotation of the top column, the moving plate and the moving frame can be pushed to move, and the first spring is compressed. When the top column is not in contact with the moving plate, under the action of the first spring, the impact block will suddenly impact the platform. The continuous rotation of the top column can make the impact block continuously impact the platform to generate vibration. This kind of vibration is low-frequency rotation. The high-frequency vibration and the low-frequency rotation act on the fastener together to realize the anti-loosening performance of the fastener as realistically as possible under the working environment.

The application discloses a fuel beach buggy engine suspension assembly and belongs to the technical field of installation and arrangement of internal combustion engines. The fuel beach buggy engine suspension assembly comprises a base and a framework. A buffer assembly one is arranged at the corner of the framework. The buffer assembly one is assembled and connected with a vehicle frame. A buffer assembly two is arranged at the middle section of the framework. The buffer assembly two is assembled and connected with an engine. The buffer assembly one comprises two hierarchical bushings and two rubber bushings. The buffer assembly one and the buffer assembly two are arranged to decouple and process impacts and vibrations in different directions. The buffer assembly one mainly bears impacts in the vertical direction and the vehicle longitudinal direction, and the buffer assembly two focuses on processing impacts and vibrations in the vehicle transverse direction. The design with clear division of labor enables the suspension system to efficiently cope with the complex stress environment of the beach buggy, and significantly improves the inhibition capacity for transverse vibrations.

The invention provides a PDC drill bit capable of preventing transverse vibration, and belongs to the technical field of well drilling tools, the PDC drill bit comprises a drill bit body and a drill bit connector, a plurality of cutting teeth including main cutting teeth and gauge protection cutting teeth are distributed on a blade of the drill bit body, the main cutting teeth are arranged on the inner side part of the blade, the gauge protection cutting teeth are arranged on the peripheral part of the blade, and the main cutting teeth and the gauge protection cutting teeth are arranged on the drill bit body. The main cutting teeth are arranged on a single blade in an up-down staggered mode capable of preventing transverse vibration, annular concave-convex grooves can be formed between the spaced cutting teeth while the cutting teeth are arranged on the whole crown shape, the annular concave-convex grooves can be clamped with rock at the well bottom in the drilling process, and transverse vibration of the drill bit is avoided. According to the drill bit, the cutting teeth originally arranged on the crown curve are arranged in the up-down staggered mode, the complete crown shape is reserved, meanwhile, concave-convex grooves can be formed between the cutting teeth, the drill bit can be perfectly clamped with rock at the well bottom in the drilling process, and transverse vibration of the drill bit is avoided.

The application discloses a BLDC rivet automatic feeding detection mechanism, which comprises two transverse vibration supports arranged on a workbench, a longitudinal feeding plate arranged corresponding to a channel, a rivet detection assembly for detecting defective rivets and a defective product dropping mechanism for receiving defective rivets. The transverse vibration supports and the longitudinal feeding plate are arranged to quickly convey the rivets to be detected, so that manual feeding is avoided and the work efficiency is improved. Meanwhile, the rivet detection assembly and the defective product dropping mechanism are arranged to cooperate with each other to detect the rivets. The automatic detection improves the detection accuracy and realizes synchronous detection of a conveying line, thereby reducing the complexity of an assembly line.

The present invention discloses a device for improving the density and vibration quality of large-volume concrete pouring, which comprises: a vibrating steel mesh, which comprises longitudinal vibrating steel bars and transverse vibrating steel bars, wherein the longitudinal vibrating steel bars are arranged in the gaps between the structural steel bars of the concrete structure, one end of the longitudinal vibrating steel bars is connected to the inner formwork via a fixed sleeve, and the other end is connected to the outer formwork via a fixed sleeve; the transverse vibrating steel bars are arranged in the gaps between the structural steel bars of the concrete structure, and the transverse vibrating steel bars are connected to the longitudinal vibrating steel bars; a vibrating motor, which is connected to the vibrating steel mesh via a vibration transmission member to transmit vibration to the vibrating steel mesh. The present invention achieves vibration of the concrete by laying the vibrating steel mesh in the gaps between the structural steel bars of the concrete structure and using the vibrating motor to drive the vibrating steel mesh to vibrate. Vibrating in the form of a vibrating steel mesh has the advantages of uniform and comprehensive vibration, and effectively avoids the occurrence of vibration leakage, uneven vibration, and the like.