458 results about "Kinetic energy" patented technology

The invention discloses an energy-saving servo hydraulic control system, which relates to the technical field of hydraulic control, and comprises a controller used for receiving an external control instruction and outputting an adjusting instruction according to a feedback signal; the servo driving unit receives the adjusting instruction, and a servo driver adjusts the rotating speed and the torque of a servo motor; according to the hydraulic power module, a servo motor drives a variable hydraulic pump to output oil; the hydraulic executing mechanism is used for executing a power output action; the sensing feedback module is used for collecting the position, oil way pressure and execution speed data of the hydraulic execution mechanism; the energy recovery module is used for recovering potential energy and kinetic energy under the braking or descending working condition and converting the potential energy and kinetic energy into hydraulic energy to be stored and reused; and the control valve group is used for accurately controlling the on-off, the flow direction and the flow distribution of the oil liquid. Through flow-pressure on-demand matching and graded energy recovery, the problems that a traditional hydraulic system is large in throttling loss, low in control precision and poor in load adaptability are solved.

A kinetic energy distribution transmission mechanism with double-drive control and double joints comprises a first drive device, a second drive device, a first joint arm, a second joint arm and a third joint arm, and a first idle wheel structure and a second idle wheel structure are rotationally arranged on a second joint shaft structure. A first driving wheel structure and a second driving wheel structure are arranged on the first joint shaft structure and are fixedly connected with the first joint arm; the first driving device is in transmission connection with the first idle wheel structure and the first driving wheel structure in sequence through a first rotary transmission pair, the second driving device is in transmission connection with the second idle wheel structure and the second driving wheel structure in sequence through a second rotary transmission pair, and the rotating directions of the second idle wheel structure and the second driving wheel structure are different. According to the utility model, sufficient kinetic energy can be provided, higher peak torque can be realized, the energy consumption in the overall movement process is lower, the manufacturing cost is lower, and the occupied overall space and mass are lower.

The invention discloses a roadway tunneling and conveying all-in-one machine with impact cutting teeth for assisting rock breaking. The roadway tunneling and conveying all-in-one machine comprises a walking mechanism, a main machine body, a material conveying mechanism, a material receiving mechanism, a multi-dimensional adjusting mechanism, a rotary driving mechanism and a cutting head mechanism. Cutting tooth units distributed along a spiral track are arranged on the surface of the cutting head mechanism, energy storage rebound mechanisms are arranged in the cutting tooth units, impact inertia kinetic energy is stored and released through multi-layer irregular arrangement of balls, secondary rock breaking is achieved, and the cutting efficiency and the hard rock adaptability are improved. The multi-dimensional adjusting mechanism expands the operation range through cooperation of a rotating base, a hydraulic cylinder and a hydraulic telescopic rod. The material receiving mechanism comprises an angle-adjustable material containing plate and symmetrically-arranged material sweeping wheels, the material sweeping wheels buffer a material pushing plate through springs to avoid collision damage, and an auxiliary feeding mechanism is arranged to enhance the material conveying continuity. Impact kinetic energy is recycled, the cutting range is flexible and adjustable, efficient collection and conveying of materials are integrated, and the device is suitable for high-hardness rock stratum roadway tunneling.

The embodiment of the invention provides torque control of a vehicle, the vehicle and a computer readable storage medium, and relates to the technical field of vehicles. The method comprises the steps that in response to the fact that the vehicle is in an energy recovery mode, target deceleration is determined based on preset deceleration and a road slope value, and the energy recovery mode is used for converting kinetic energy of the vehicle into electric energy; determining a required braking torque of the vehicle based on the target deceleration and the actual deceleration; a torque control instruction is generated based on the required braking torque and the maximum regenerative braking torque, the maximum regenerative braking torque is the maximum value of the regenerative braking torque provided by the motor, and the regenerative braking torque is the reverse torque generated by the motor when the vehicle decelerates; and controlling the output torque of the motor or the friction brake based on the torque control instruction. The technical problem that the energy recovery performance of a sliding energy recovery system in the prior art is unstable under different slope conditions is solved.

The present application particularly relates to a sewing machine for realizing intermittent cloth feeding operation, comprising a cloth feeding assembly and an intermittent driving assembly. The cloth feeding assembly comprises a cloth feeding wheel and a transmission rod connected to the cloth feeding wheel. The intermittent driving assembly comprises a driving body, a planetary gear assembly connected to the driving body and driving the transmission rod based on the driving body. The driving body has an axis, an eccentric wheel arranged at the axis, and an output connected to the eccentric wheel and the planetary gear assembly. The eccentric wheel is shaped with a plurality of first teeth at the outer edge. The output is shaped with a plurality of second teeth matched with the first teeth. The eccentric wheel performs an elliptical motion relative to the output after being driven by the axis. The output outputs kinetic energy to the planetary gear assembly only when the first teeth engage the second teeth.

The present application relates to the technical field of regenerative braking, in particular to a mine truck energy recovery torque rate control method based on vehicle mass and transmission parameters, comprising the following steps: collecting vehicle operation data to construct a time series data set, calculating kinetic energy response sensitivity index and correcting the maximum allowed rising slope, extracting elastic power difference value and oscillation component based on second-order differentiation, and generating torque rate control instruction. In the present application, the influence degree of the current load state of the vehicle on the kinetic energy recovery is quantified, and the maximum allowed rising slope is dynamically corrected accordingly to accurately adapt to different load conditions. The elastic power difference value of the transmission system is extracted by using the second-order differentiation of power, and the oscillation component is separated. When the oscillation is detected to exceed the threshold, the dynamic damping correction value is calculated to down-regulate the limit parameter, which not only ensures the smoothness of torque establishment under heavy load conditions to avoid mechanical damage, but also effectively suppresses the elastic torsional vibration of the transmission system.

The utility model provides a folding type catapult rack device for assisting takeoff of a flapping-wing unmanned aerial vehicle. The folding type catapult rack device comprises a track bottom plate, a guide rail, a guide rail shaft, a folding supporting and fixing assembly, a lifting table, a tripod supporting assembly, a lock catch fixing assembly, a catapult spring, a catapult baffle and a stop block spring. A guide rail and a guide rail shaft are arranged on the front face of a rail bottom plate, so that an ejection spring drives a lock catch fixing assembly to make contact with an ejection baffle, and kinetic energy is provided for takeoff of the flapping-wing unmanned aerial vehicle; the lifting platform is arranged at one end of the reverse side of the track bottom plate, the tripod supporting assembly is arranged at the other end of the reverse side of the track bottom plate, the mounting groove is formed in the upper portion of the folding supporting and fixing assembly, and the mounting hole matched with the mounting groove is formed in the lifting platform so that the height between the track bottom plate and the ground can be adjusted, and therefore the inclination angle of the track bottom plate can be adjusted. And the inclination angle of the lock catch fixing assembly is adjusted, so that the flapping-wing unmanned aerial vehicle has a proper take-off inclination angle.

The present application relates to a kind of inertial energy storage methods.A kind of inertial energy storage method uses inertial energy storage device, with the cavity of fluid being contained, kinetic energy recovery device and the transmission member driven by the pressure of fluid in cavity, the method includes: fluid in cavity is accelerated;Fluid in cavity is applied deceleration resistance by kinetic energy recovery device, so that fluid in cavity is decelerated;During the deceleration of fluid in cavity, the kinetic energy of fluid deceleration is recovered by kinetic energy recovery device;Wherein, using the acceleration effect of fluid in cavity, the pressure of fluid in cavity is increased from first pressure to second pressure according to the velocity variation rate and movement state of fluid;Before the step of kinetic energy recovery device recovery kinetic energy ends, additionally by transmission member, the fluid pressure energy generated by fluid under the action of second pressure is obtained, wherein, first pressure is less than second pressure.

This application provides a method, apparatus, device, and medium for transient torque control of a vehicle. The method includes: upon detecting that a vehicle has passed through a transmission gap region, determining a reference angle radian corresponding to the vehicle passing through the transmission gap region based on a first angle radian rotated by the motor and a second angle radian rotated by the electric drive output terminal; upon detecting that the vehicle has re-entered the transmission gap region, determining the corresponding real-time angle radian; determining a target motor angular velocity corresponding to the vehicle being in the transmission gap region based on the radian deviation value between the reference angle radian and the real-time angle radian; and determining a target motor torque based on the target motor angular velocity and the current actual motor angular velocity, and performing torque control. This application reduces the gear impact kinetic energy during drive reversal by performing closed-loop speed control on the motor torque in the transmission gap region, thereby reducing the impact of the transmission gap region on vehicle drivability during transient torque transitions.

The utility model relates to the field of elevator anti-falling devices, in particular to an intelligent anti-falling device of a construction elevator, which comprises a guide rail bracket, the guide rail bracket is fixedly mounted on the construction ground, the guide rail bracket is formed by fixing four cylindrical rods along a rectangle, an anti-falling plate is arranged at the lateral position of the guide rail bracket, and the anti-falling plate is arranged on the guide rail bracket. The outer side face of the anti-falling plate is used for being connected with a hanging basket of the construction elevator, shaft rods are symmetrically installed at the upper positions of the inner side wall of the anti-falling plate, speed measuring wheels are installed at the tail ends of the shaft rods, and the outer rings of the speed measuring wheels are attached to the outer side of the guide rail frame. Guide strip blocks are symmetrically and fixedly installed on the guide rail frame, rectangular holes are formed in the inner sides of the guide strip blocks, one sides of the rectangular holes are communicated with rectangular grooves, and anti-falling square pipes are inserted into the rectangular holes. Therefore, a safer and more reliable anti-falling effect is achieved, and a better guarantee is provided for safe operation of the building hoist.

The invention provides a tax data distribution device and method of a heterogeneous tax system, and relates to the technical field of heterogeneous tax, the tax data distribution device comprises a vehicle door main body and a plurality of buffer assemblies arranged in the vehicle door main body, and the plurality of buffer assemblies are arranged in the vehicle door main body in a rectangular parallel manner. External impact energy can be effectively absorbed through the buffer assembly, direct injury of impact to passengers is relieved, the overall safety is improved, impact force generated when the automobile door is impacted is transmitted to the top plate attached to the impact position, after the top plate is stressed, the force is transmitted to the damper connected with the top plate, the compression or deformation process of the damper needs time, and the impact force is transmitted to the automobile door through the buffer assembly. According to the invention, the damper is arranged on the vehicle door, so that instant violent impact is prolonged into a relatively gentle force action process, the impact action duration is prolonged, the stress impact rate is reduced, and meanwhile, a part of impact kinetic energy is consumed by the damper through internal friction or plastic deformation, so that the vehicle door and the vehicle body structure are protected.

The invention relates to a micromechanical structure having a substrate and a seismic mass which is movable relative to the substrate, wherein a torsional spring connects the seismic mass to the substrate. The micromechanical structure further has a detection mechanism, wherein a first direction and a second direction which is substantially perpendicular to the first direction define a main extension plane of the substrate, wherein the detection mechanism is designed to detect a rotational displacement of the seismic mass about a rotational axis, wherein the rotational axis is arranged in the second direction. The micromechanical structure further has a stop structure, wherein the stop structure is arranged such that a movement of the seismic mass is limited by the stop structure, wherein the stop structure is designed to absorb kinetic energy of the seismic mass in a partially elastic, partially inelastic collision.

Disclosed is an apparatus for controlling communication / separation of air chambers of a spring-loaded pneumatic power tool, said apparatus comprising a cylinder housing (11) and an energy accumulator housing (13), a first air chamber (111) being formed inside of the cylinder housing (11), and a second air chamber (131) being formed inside of the energy accumulator housing (13). A piston striker assembly (6) that can move in the axial direction is arranged in the cylinder housing (11). A lifting wheel (3) and a locking assembly (2) are respectively arranged on two sides of a path of movement of a striker (61), and the lifting wheel (3) and the locking assembly (2) are both controlled by a motor (1). The side on the end at which the cylinder housing (11) is connected to the energy accumulator housing (13) is further provided with an opening / closing valve (14) and a jacking spring (15). Under the action of the jacking spring (15), the opening / closing valve (14) blocks an end surface of the cylinder housing (11), such that the first air chamber (111) is separated from the second air chamber (131). A driving rod (10) is further provided in the energy accumulator housing (13), one end of the driving rod (10) is connected to the opening / closing valve (14) to form a synchronous movement structure, and the other end of the driving rod (10) extends out of the energy accumulator housing (13). The first air chamber (111) and the second air chamber (131) are controlled to be in communication or separated by the movement of the opening / closing valve (14). When the piston striker assembly (6) is in an upper stop position, the opening / closing valve (14) blocks the end surface of the cylinder housing (11). The apparatus bears small initial kinetic energy from false firing, thus having a longer product life and providing higher safety.

A kind of automobile engine suspension bracket detection device, including, the middle two sides of the bottom plate upper end face are connected with fixed component, four vibration enhancement components are connected to the bottom plate lower end face four corners, two The vibration component is connected to the bottom plate upper end face two sides, two sliding seats are slidably connected in the T-shaped sliding groove, and two The suspension bracket is connected on the sliding seat.The utility model has the advantages of being set as separate component, by setting vibration component and vibration enhancement component, by starting double-shaft motor to drive eccentric disc to rotate, drive bottom plate to vibrate, while vibrating, bottom plate will kinetic energy be transferred to telescopic link and spring, by spring continuous compression rebound, simulate the scene of automobile vibration, relative to detection on car, greatly reduce the tediousness of detection, improve detection efficiency.

A tensioning device for a safety belt component, comprising a gas generator for generating a pressurized gas, a piston that can be driven by the pressurized gas, a tension cable that is connected to the piston and is connectable to a safety belt component to be set into a tensioning movement, a tensioner tube for receiving and guiding the piston, and a guide block that forms a cable guide and in which a receptacle receiving the gas generator and a pressure chamber fluidically connected to the receptacle are formed, wherein the guide block is connected to the tensioner tube and the tension cable runs rectilinearly in a piston movement direction from the tensioner tube through the pressure chamber, and wherein at least one damping element is formed, which absorbs the kinetic energy of the safety belt component in the event of a load-free tensioning movement.

This application discloses an auxiliary braking device, method, system, medium, equipment, and vehicle. The auxiliary braking device includes: a housing with a cavity formed inside; a drive shaft, connected to the wheel and at least partially disposed within the cavity; an electromagnet disposed within the cavity; and a magnetorheological fluid filling the cavity. The auxiliary braking device is configured to utilize the internal frictional adhesion force generated by the magnetorheological fluid moving within the cavity to convert the kinetic energy of the vehicle into the internal energy of the magnetorheological fluid, thereby achieving auxiliary braking. The auxiliary braking device provided by this invention achieves this by using the adsorption and release of the magnetorheological fluid under the control of a magnetic field. During normal driving, it does not affect the vehicle's power transmission; when deceleration is required, it utilizes the internal friction of the magnetorheological fluid itself to convert kinetic energy into internal energy, thus achieving an auxiliary braking effect. This device has a simple structure and is easy to operate, and can greatly protect the safety and reliability of the vehicle's main brake disc, effectively eliminating or reducing the occurrence of brake failure during long-term downhill driving or continuous deceleration.

The invention provides a virtual motorcycle control method and device, electronic equipment and a storage medium, and the method comprises the steps: responding to a jump instruction for a current virtual motorcycle, and detecting the remaining jump times of the current virtual motorcycle; acquiring the current horizontal speed of the current virtual motorcycle under the condition that the number of remaining jumps meets the preset condition; determining a target horizontal ejection speed of the current virtual motorcycle according to the current horizontal speed and a pre-configured escape speed threshold value; and according to the target horizontal ejection speed and a pre-configured vertical take-off speed, controlling the current virtual motorcycle to execute a jumping action in the game picture. According to the method and the device, the horizontal speed parameter of the virtual motorcycle can be corrected, so that the carrier can still generate effective horizontal displacement to get rid of a stuck area under the condition of lacking initial kinetic energy, and the driving fluency of the virtual motorcycle in a complex terrain is improved.

The application discloses a mechanical equipment safety interlock control method based on multi-sensor information fusion. The method collects the motion position, speed, acceleration, force and torque data of the mechanical equipment, and performs time alignment, amplitude normalization and short-time abnormality filtering, estimates the kinetic energy, potential energy and friction energy consumption of each energy node, and constructs an energy transmission matrix between nodes; fusion sensor data and matrix information extracts four types of abnormal characteristics of short-term energy surge, local energy reflection, friction energy abnormal fluctuation and energy accumulation accompanied by micro-vibration, and predicts dangerous energy states including single and complex dangerous energy states accordingly; based on the prediction of dangerous energy state and the current running state of the equipment, the safety interlock action is adaptively triggered, the driver torque, current amplitude limiting and active damping are dynamically adjusted, and the control of backflow energy and accumulated energy along the virtual dissipation path is realized. The method is suitable for high dynamic mechanical equipment and can realize fine safety interlock control of multiple nodes and multiple abnormal characteristics.

This application relates to the field of vehicle control technology, and provides a vehicle control method and vehicle terminal for a motion sickness relief mode. When the target vehicle is in motion sickness relief mode, this application not only reduces at least a portion of the gain ratio of the accelerator pedal signal to the motor output torque, suppressing the rate of change of acceleration during acceleration, but also allocates a portion of the deceleration generated by kinetic energy recovery as mechanical braking, suppressing the rate of change of acceleration during deceleration. Compared to limiting acceleration itself based on a fixed acceleration threshold, this application dynamically adjusts the motor output torque and the intensity of kinetic energy recovery to limit the impact of acceleration, thereby preventing abrupt changes in acceleration and making the acceleration change smoother, thus improving the relief effect for motion sickness sufferers.

The invention belongs to the technical field of deep underground target penetration, and particularly relates to an energy gathering / kinetic energy series penetration structural body which comprises a charging shell, the front end of the charging shell is provided with an opening, a shaped charge liner is arranged at the opening of the front end of the charging shell in an adhesive mode, the rear end of the charging shell is fixedly connected with a rear-stage connecting part, and the rear-stage connecting part is fixedly connected with the charging shell. The rear end of the rear-stage connecting part is connected with a rear-stage main projectile body, a charging buffer layer is arranged at the front end of an inner cavity of the rear-stage main projectile body, a rear-stage fuze is installed at the rear end of the rear-stage main projectile body, and the charging shell and the rear-stage main projectile body are both filled with gunpowder. Wide-speed-range penetration is achieved through the series connection structure, the rear-stage connecting part extends into the charging shell to be in threaded connection with the charging shell, the rear-stage connecting part is protected against damage by utilizing three-direction pressure stress generated by explosive detonation, meanwhile, the length of the rear-stage connecting part can be adjusted, the rear-stage connecting part is used for protecting a penetration projectile body structure under the condition of different penetration target-hitting speeds, and the penetration target-hitting speed is improved. And therefore, the purpose of increasing the penetration power is achieved.

The utility model relates to the technical field of undercarriages, in particular to a modular undercarriage with a strong stability mechanism, which comprises a bearing frame, two adjusting plates are fixedly connected to one side of the bearing frame and are symmetrically arranged, an auxiliary bearing frame is fixedly mounted at one end of the bearing frame, and a plurality of auxiliary bearing frames are fixedly mounted at the other end of the bearing frame. The surface of the adjusting plate is rotatably connected with a mounting plate, the surface of the mounting plate is fixedly connected with a first shock absorption supporting column, the first shock absorption supporting column is hollow, and the inner wall of the first shock absorption supporting column is slidably connected with a vertical rod. Kinetic energy generated when the aircraft lands on the runway is converted into electric energy to be transmitted to the super-capacitor module to be stored, so that energy which is originally consumed and wasted in the braking process is recycled, cyclic utilization of the energy is achieved, the overall energy utilization efficiency of the aircraft is improved, dependence on external energy is reduced to a certain degree, and the operation cost is reduced.

The invention discloses an automobile anti-collision device based on multi-stage kinetic energy absorption. The automobile anti-collision device comprises a multi-stage kinetic energy absorption mechanism, a rear-end collision limiting device and a displacement limiting system. The multi-stage kinetic energy absorption mechanism comprises a first-stage kinetic energy absorption assembly, a second-stage kinetic energy absorption assembly and a third-stage kinetic energy absorption assembly, and the first-stage kinetic energy absorption assembly is an anti-collision beam made of a carbon fiber composite material; the secondary kinetic energy absorption assembly is an energy absorption box which is arranged at the rear end of the anti-collision beam and made of foamed aluminum light energy absorption materials, and a guide groove of the energy absorption box is triangular. The third-level kinetic energy absorption assembly is an air pressure buffer arranged behind the energy absorption box, and the air pressure buffer is a rubber plate. The displacement limiting system detects the state through a photoelectric sensor, an IMU and a laser radar, and a microcontroller controls wheels to be locked. The device can effectively absorb collision kinetic energy, reduces vehicle displacement and secondary damage, improves safety and is suitable for complex traffic scenes.

The invention relates to the technical field of thermal management, in particular to a novel vortex electronic water pump for a thermal management system of an electric vehicle, which comprises a water pump main body and a buffer cylinder, a floating vortex cavity for converting shaking into vortex is arranged on the inner side surface of the buffer cylinder, and a piston for storing water and outputting pressure is arranged on the inner side surface of the buffer cylinder; the bottom surface of the pressure storage piston is provided with a flow stabilizing funnel which collects cooling liquid and does not affect water pressing of the piston, the bottom surface of the buffer cylinder is provided with a centrifugal liquid locking valve which is controlled to be opened and closed according to start and stop of the pump, and the bottom surface of the buffer cylinder is provided with a damping seat which reduces influence of self-vibration of the pump on a pipeline. And shaking kinetic energy is converted into local pressure stabilizing potential energy through liquid inertia and centrifugal force of vortex, air suction caused by instantaneous liquid level falling is eliminated, and the problem that in the using process, short-time air suction and cavitation of the circulating pump cause sudden reduction of condensation efficiency is solved.

The present application relates to the technical field of mine machinery control, and particularly relates to a mine hoist intelligent control method and system. The method comprises: obtaining vibration acceleration and depth and speed data of a hoisting container; constructing a speed adaptive penalty factor negatively correlated with real-time speed, and performing variational modal decomposition on the vibration signal; constructing a dynamic reference potential energy positively correlated with real-time speed square and depth logarithm; combining envelope amplitude relative over-scale and inverse speed weighted difference mean to calculate an impact risk index; and performing fault determination through local outlier factor analysis. The present application realizes relative quantity monitoring of the whole stroke by introducing kinetic energy theorem and cantilever beam stiffness characteristics, avoids false alarms in deep wells, and significantly improves fault sensitivity of low-speed inspection by using inverse speed weighting.

The application relates to the technical field of roof protection frames, and discloses a forklift anti-falling roof protection frame with a multistage buffer structure, which comprises a vehicle body, four connecting blocks are fixedly connected to the outer surface of the vehicle body, the upper surfaces of the connecting blocks are all fixedly connected with stand columns, a fixing frame is arranged above the vehicle body, and the bottom surface of the fixing frame is fixedly connected with the four stand columns. The forklift anti-falling roof protection frame with the multistage buffer structure is provided with a first-stage hydraulic buffer, a second-stage honeycomb aluminum energy absorption box and a third-stage elastic damping layer, so that in the use process of the device, part of impact force can be absorbed through the compression deformation of the third-stage elastic damping layer, then the remaining kinetic energy is gradually conducted to the honeycomb aluminum energy absorption box, half of the energy is absorbed through the plastic deformation of the hole wall, the remaining energy is finally dissipated by the plunger cylinder through the oil throttling effect, and therefore, the device can greatly reduce the energy conducted to the driver when the roof protection frame is impacted.

The present application relates to a kind of multi-stage gravity potential energy driven water tunnel test device, belong to water tunnel test technical field.The multi-stage gravity potential energy driven water tunnel test device is divided into main drive flow channel and auxiliary energy release flow channel from the water body of high-level reservoir;Water body that flows through auxiliary energy release flow channel drives the mechanical energy generated by energy extraction mechanism, is transmitted to energy injection mechanism by transmission mechanism, and is converted into the propulsion work to the water body in main drive flow channel, to realize the gravity potential energy of auxiliary energy release flow channel water body is transferred and superimposed to the water body in main drive flow channel, finally from test pipeline obtains the flow velocity higher than single gravity potential energy driven can reach.The device by the gravity potential energy of auxiliary energy release flow channel water body is transferred and superimposed to main drive flow channel, additionally increases the kinetic energy for the water body in main drive flow channel, to make test pipeline obtain the flow velocity higher than only by single gravity potential energy driven can reach, overcome the flow velocity of traditional gravity type water tunnel limited bottleneck.

The invention relates to the field of rail transit, in particular to an accelerated test method for the abrasion life of a material for a high-speed rail braking system. Acceleration test equipment used in the method comprises a rotating main shaft, a rotating disc, a precise loading and feeding device, an environmental atmosphere control system, an infrared temperature measuring device, a data acquisition system and a computer, an equivalent dynamic energy dissipation method is adopted, and the braking energy density and dynamic energy dissipation of a 1: 1 braking test bed are determined; and calculating test parameters for acceleration test equipment, namely test speed, load and single energy dissipation, and realizing the acceleration test on the wear life of the to-be-tested high-speed rail brake material by adjusting the total dynamic energy dissipation amount of the test. Acceleration test equipment and an equivalent energy dissipation test method are adopted, the problems that in the prior art, the sliding linear speed of a friction pair is insufficient, the loading and environment atmosphere are inconsistent with the actual working condition, and the brake lining material abrasion life evaluation period is long are solved, and the time needed by a life test can be effectively shortened.

The application relates to an automatic cutting machine, in particular to a cutting device of the automatic cutting machine, which comprises a cutting machine body, a controller electrically connected to one side of the cutting machine body, a sliding rail frame arranged on the top of the cutting machine body, and a cutting mechanism slidingly arranged on the sliding rail frame; the cutting mechanism comprises a sliding seat slidingly connected to the top end of the sliding rail frame, a laser cutting end slidingly connected to the sliding seat, and a cutting rod telescopically arranged at one end of the laser cutting end; the buffer wheel clamps the vibration contact plate to weaken the shaking kinetic energy by driving the plug-in block through the telescopic drive cylinder; the damping rod and the damping spring are used to suppress vibration and resonance; meanwhile, the conductive plug is driven to make the electric telescopic rod push the linkage arm to enhance the support stability, so as to solve the problems of shaking after the high-speed sliding pause of the laser cutting end, resonance of the sliding rail frame and insufficient central support, which result in poor cutting precision.

The present application belongs to the technical field of anti-collision wall, and particularly relates to an energy-absorbing assembled anti-collision wall and a mounting method thereof. The anti-collision wall comprises a base, a wall body slidingly connected to the base, an elastic energy-absorbing assembly arranged on a collision surface of the wall body, a damping energy-dissipating assembly connecting the base and the wall body, and a climbing-preventing intercepting assembly integrated in the wall body. The system is equipped with a multi-source data acquisition and processing assembly, and through spatiotemporal data fusion of far-field radar prediction and near-field contact sensing, an impact feature vector is constructed and a hierarchical control instruction is generated. In operation, for low-energy-level impact, the elastic assembly is used for resetting and energy absorption; for medium and high-energy-level impact, the wall body is controlled to slide, and the kinetic energy is dissipated through the variable-damping mechanism of the damping energy-dissipating assembly; and for high-risk climbing danger, the climbing-preventing intercepting assembly is driven to instantaneously expand and lock. The present application effectively solves the problems that the traditional guardrail cannot simultaneously consider buffering and rigid blocking, and the large vehicle climbing interception fails.

The utility model discloses a bubble type water level gauge fairing relates to water level gauge fairing technical field, including the cover body, the top of cover body swing joint has the top cover, the inside bottom fixedly connected with the connecting pipe of top cover, and the connecting pipe is connected with the top cover through a plurality of connecting rods, the inside rotatable connection of top cover has the movable block, the bottom rotatable connection of cover body has the one end of connecting piece through the axle. The utility model discloses a cover body and top cover are connected, and the outer cover shell is also connected with the top cover, and then the installation of fairing is completed, so when the outside gas can enter the top cover through the air inlet, make the gas push turbine and movable block synchronous rotation, then the airflow energy is converted into mechanical kinetic energy, make the connecting piece drive the rotation of brush between cover body and outer cover shell, thereby realize the surface hole cleaning of cover body and outer cover shell, ensure the unobstructed of hole, reduce the airflow instability and measurement error caused by the blockage, guarantee the accuracy and reliability of water level monitoring data.