1415results about How to "Avoid shock" patented technology

The invention provides a computing power unified access management method based on an API technology, and the method comprises the steps: monitoring the request amount and response time of each interface in real time in a current-limiting fusing assembly of an AP I gateway, carrying out the current-limiting and fusing operation when the request amount exceeds a current-limiting threshold value, and queuing requests exceeding the threshold value again; a token generation rate and a leakage rate of a leaky bucket are dynamically adjusted according to real-time flow change of an interface by applying a self-adaptive flow limiting method, fine control and smooth processing are performed on flow, and impact of burst flow on a system is avoided; the flow, response time and error rate of each interface are monitored in real time, different AP I gateway interfaces are integrated, a flow-limiting fusing model is established, a random forest method is applied, historical data are trained and learned by the model, and a flow-limiting threshold value and a fusing rule are autonomously optimized.

The invention discloses a natural gas station intelligent distribution method based on the Internet of Things, and relates to the technical field of natural gas station distribution design. Flow, pressure and valve state data are obtained in real time through an Internet of Things sensor, and a weighted average method and Kalman filtering are used for data fusion and optimization; meanwhile, the relative position relation between the flow meter and the adjusting valve is judged in real time, branch configuration changes are dynamically recognized, self-adaptive branch matching logic is triggered, and therefore control logic is adjusted; meanwhile, the opening degree of the valve is controlled through PID, self-adaptive dead zone compensation is conducted in combination with historical operation data of the valve and the current state, valve response delay is eliminated, the adjusting precision is improved, and flow fluctuation is reduced; in addition, in the feedback adjusting stage, the adjusting result is continuously monitored, the actual flow and the pressure value are compared with the target value, the opening degree of the valve is dynamically adjusted through real-time error calculation, and the output is kept consistent with the target.

The invention discloses an active power distribution network two-stage island division method and system considering flexible resource support. The method comprises the following steps: establishing a first resource allocation model considering energy storage and controllable load, the first resource allocation model comprises energy storage battery charging and discharging upper and lower limit constraints, an energy storage battery degradation cost model, a controllable load model and a controllable load related user protocol; obtaining parameter data of a target power distribution system, wherein the parameter data comprises a line parameter, a load level, a load level, a network topology connection relationship, a system operation voltage level and branch current limitation, a system fault position, a reference voltage and a reference power initial value; and according to the parameter data, establishing a mathematical model for two-stage island power supply recovery based on a first resource allocation model. The method for solving the island is simple and convenient, the island recovery amount can achieve the optimal recovery effect, meanwhile, the search time is greatly shortened, the solving efficiency is higher, and the rapid power supply recovery capacity of the power distribution network is improved.

The invention belongs to the technical field of pipeline construction, and particularly relates to a pipeline lowering assembly line in a plain area and a construction method.The assembly line is arranged at the front end of the starting end of pipe ditch excavation, and the assembly line is sequentially connected with a pipeline frame, a welding platform, a flaw detection platform, a joint coating platform, a pipe ditch support and a tractor in series through a conveying device; a pipeline is stored through the pipeline rack and conveyed to the welding platform for welding connection, welding quality detection is carried out on the flaw detection platform, anti-corrosion treatment is carried out on the joint coating platform, finally, the pipeline enters a pipe ditch through the pipe ditch support and then is connected to the bottom of the excavator through the tractor, and the excavator drags and distributes the pipeline. The problems that the road width is too large and the construction period is too long in traditional pipeline lowering are solved, the construction site can be saved, the construction efficiency is improved, and the construction cost is reduced.

The invention belongs to the technical field of power systems, and discloses a method for maintaining electric energy metering, which comprises the following steps of: acquiring electric energy metering related data; preprocessing the electric energy metering related data to obtain an electric energy metering comprehensive characteristic data set; according to the electric energy metering comprehensive feature data set, training to obtain an electric energy metering error prediction model, and based on the electric energy metering error prediction model, predicting to obtain an electric energy metering error; judging whether error correction is needed or not according to the predicted electric energy metering error; if error correction needs to be carried out, early warning information is generated, and electric energy metering error data is automatically collected; training to obtain an error type identification model according to the electric energy metering error data, and predicting to obtain electric energy metering error type data based on the error type identification model; based on the electric energy metering error type data, utilizing a distribution calibration algorithm to correct the electric energy metering error; the requirement for manual intervention is reduced, and the working efficiency of the system is improved.

The invention discloses a communication network power distribution cabinet convenient for heat dissipation, and relates to the technical field of power distribution cabinets, and the power distribution cabinet comprises a composite mechanism. According to the communication network power distribution cabinet convenient to dissipate heat, through the design of a composite mechanism, the box body shell is used for storing electronic components, after long-time operation, the temperature in the box body shell rises, hot gas rises, and then the hot gas flows to the processing mechanism from the circular groove, so that the heat dissipation effect is achieved, and the internal temperature of equipment is reduced; the ventilation mechanisms are arranged on the two sides of the box body shell, so that the convection effect is achieved, the cold air flowing effect is improved, the cold air is located at the low position with the high density, hot air is squeezed upwards after entering the box body shell, the discharging speed is increased, and the heat dissipation efficiency is improved. The box body shell is supported through the supporting assembly, so that the effect of reducing deformation of the box body is achieved, and internal electronic elements are protected.

The invention discloses a water jet assisted laser-electrochemical combined machining method which comprises the following steps: pre-treating a nickel-based superalloy to be machined, and fixing the nickel-based superalloy on a machining table; a machining area is positioned, parameters of water jet assisted laser and electrochemical machining are set, so that during laser machining, water jet cools the machining area and removes slag, and an electrolyte does not affect a non-machining area; meanwhile, water jet assisted laser and electrochemistry are started to machine the nickel-based superalloy, and the machining state is monitored in real time; and after composite machining is completed, the nickel-based high-temperature alloy is cooled. By accurately setting laser, water jet and electrochemical machining parameters, the efficient synergistic effect of the laser, water jet and electrochemical machining parameters in a machining area is ensured, the machining precision and the surface quality are effectively improved, the defects of heat affected zones, microcracks, recast layers and the like are remarkably reduced, and the machining quality is improved. And meanwhile, corrosion to a non-machining area is reduced through the mode of spraying the electrolyte in a pulse mode.

The invention belongs to the technical field of coal mining, and discloses a working face initial mining period hydraulic fracturing top cutting drill hole arrangement method based on an asymmetric three-hinged arch structure so as to solve the technical problems existing in initial mining period hard top plate treatment in the prior art. Comprising the steps that the position of a key layer is judged, the fracture distance of a hard roof of a working face is judged, the horizontal position of an upper roof fracture is determined based on an asymmetric three-hinged arch structure, the vertical height, namely the caving height h, of a hydraulic fracturing cut roof is determined, and fracturing holes of conventional straight holes are constructed in a working face open-off cut and transportation roadways and return air on the two sides. Fracturing holes in the cut holes are constructed perpendicular to the coal wall, drilling construction is conducted through drilling equipment, and the steps of conventional drilling fracturing, directional long drilling fracturing and the like are conducted respectively. According to the method, the rock mass strength is reduced, mine pressure disasters caused by overall caving of the large-area suspended roof are effectively controlled, frame pressing and rock burst disasters are avoided, the respective advantages of a conventional straight hole and a directional hole phase are fully played, and a guarantee is provided for safe and efficient stoping.

The invention provides an energy management system based on a cloud and edge integrated optical storage system. The energy management system comprises a cloud module and an edge module, the EMS controller is used for collecting information of the optical storage equipment module and the load module and uniformly sending the collected data to the cloud module; the cloud module predicts future photovoltaic power generation power / electric quantity through a photovoltaic power generation prediction model by receiving data acquired by the EMS controller; predicting a future load through the load prediction model; analyzing peak and valley time periods of the electricity price through the electricity price management model, and sending prediction data to the edge module; and the edge module carries out energy management through the control logic of energy management according to the battery SOC, the chargeable amount, the photovoltaic predicted power and the generating capacity, and superposition peak-valley arbitrage and safe anti-countercurrent logic. Through the arrangement, the whole energy management system has high intelligence and automation levels, energy distribution and use are optimized, and the energy utilization efficiency is improved.

The invention discloses a method, system and device for monitoring the quality of an operating lightning arrester, and the method comprises the steps: collecting a lightning current, a leakage current, the temperature of the lightning arrester and the environment temperature during lightning stroke, evaluating the residual life of the lightning arrester through the lightning current, and achieving the quality monitoring of the operating lightning arrester based on the residual life, the leakage current, the temperature of the lightning arrester and the environment temperature. Healthy operation of the lightning arrester can be ensured, safe and reliable operation of a distribution line can be ensured, and great economic value and social benefit are achieved.

The invention discloses an electric drive pump rotating speed and displacement double-variable control method and device. The method comprises the steps that whole vehicle working state information is obtained; according to the whole vehicle working state information, a double-variable control strategy under the corresponding working state is executed, and the double-variable control strategy under the corresponding working state comprises the steps that the rotating speed and the displacement value of an electric drive pump meeting the target flow request and the optimal electric drive pump system comprehensive efficiency under the current load pressure are determined; the optimal rotating speed and the optimal displacement of the electric drive pump are determined based on a displacement difference threshold value and the difference relation between the rotating speed and the displacement value of the electric drive pump meeting the target flow request and the optimal comprehensive efficiency of the electric drive pump system under the current load pressure and the current actual rotating speed and the displacement of the electric drive pump; and the electric drive pump is adjusted according to the optimal rotating speed and the optimal displacement of the electric drive pump. The system has the advantages that on the basis that the system flow requirement is met, the motor rotating speed and the pump displacement are adjusted to the optimal working state, and high system efficiency is obtained.

The invention discloses dust falling equipment for municipal road construction and a using method, and relates to the technical field of construction dust falling, the dust falling equipment comprises a chassis and universal wheels fixedly installed on the periphery of the bottom of the chassis, the top of the chassis is fixedly connected with a top plate, the dust falling equipment further comprises a water tank, a driving mechanism is fixedly connected to one side of the top of the top plate, and the driving mechanism is arranged on one side of the water tank; a spraying mechanism is arranged on the other side of the top of the top plate; the pressure pump is fixedly installed on one side of the top of the water tank, the end, away from the pressure pump, of the drainage pipe is connected with a telescopic pipe, and a spraying barrel is installed on the top of the top plate; the driving mechanism comprises an upper box body, and the bottom of the drainage pipe is connected with a connecting pipe; the spraying mechanism comprises a cam and a flange plate, the interior of the flange plate is connected with a rack in a sliding mode, and the problems that transverse swing adjustment and vertical swing adjustment of the device are adjusted through a servo motor and an electric hydraulic push rod respectively, operation is inconvenient, the adjustment efficiency is not high, and more energy is consumed are solved.

The invention discloses a copper pipe cutting machine, and relates to the technical field of cutting machines, the copper pipe cutting machine comprises a machine tool, the middle of the machine tool is fixedly connected with a fixing frame, the top of the fixing frame is fixedly connected with a motor, an output shaft of the motor is fixedly connected with a first gear, the interior of the fixing frame is rotatably connected with a clamp, and the outer surface of the clamp is fixedly connected with a first gear ring; a clamping jaw is slidably arranged on the right side of the clamp, and a strip-shaped shell is fixedly connected between the left side of the fixing frame and the machine tool. The horizontal concentric positions of the stabilizing rings and the clamp are kept, the horizontal concentric positions of the stabilizing wheels and the clamp are also kept, rotation of the copper pipe can be kept stable through rolling, abutting and supporting of the stabilizing wheels on the copper pipe, and therefore the situation that due to the fact that the copper pipe is inclined, a cutter cannot evenly cut the copper pipe is reduced. And the copper pipe can be prevented from being impacted by the copper pipe, so that the service life of the cutting knife is prolonged.

The invention discloses a network configuration management method and device, a program product and a medium, and relates to the technical field of computers. The method is applied to a data center operation and maintenance management platform, and comprises the following steps: when it is monitored that network configuration needs to be performed on a data center in a current service scene, obtaining physical link interconnection information between network devices in the data center through a preset hardware management protocol; before the service is issued, grouping servers in the network equipment, and issuing configuration to a target port of a switch accessed into the network equipment based on the physical link interconnection information to obtain a configured port; and dividing the servers into different virtual local area networks according to the groups to which the servers belong and based on the configured ports so as to construct a logic network isolation domain, and performing corresponding service operation on each group based on the logic network isolation domain after the service is issued. Through the technical scheme of the invention, the network configuration change can be realized, and the impact on the network flow of the data center is avoided.

The invention discloses an industrial silicon intelligent power distribution and control system and method. The system comprises a data acquisition and processing module, a shared feature extraction module, an intelligent control module and a power distribution module which are connected in sequence. Multi-mode operation data is collected in real time, a shared feature extraction module is adopted to perform feature extraction on the operation data, data input is provided for subsystems of the intelligent control module, and information isolated island is avoided; through cooperative work of all the modules, global optimization control over the industrial silicon production process is achieved. The intelligent control module comprises an intelligent industrial silicon submerged arc furnace baking system, an automatic electrode lifting system, an automatic submerged arc furnace transformer gear adjusting system and an automatic electric energy quality adjusting system, and each system performs task prediction based on corresponding characteristics by adopting a pre-trained model and outputs optimized parameters; and the power distribution module generates a power distribution instruction based on the optimization parameters, so that intelligent distribution of power resources is realized, and dynamic adjustment and optimal distribution of energy consumption are realized.

The invention discloses an AI algorithm optimization method and system based on a deep learning technology, and relates to the technical field of deep learning model optimization, and the method comprises the steps: carrying out the preprocessing of a data set, carrying out the normalization and standardization processing, and dividing the data set into a training set, a verification set and a test set; a self-attention mechanism is introduced into a convolutional layer of the ResNet-18 deep learning model, and the weight of each channel is dynamically adjusted by calculating a self-similarity matrix of a feature map; training the model by using the training set data, and dynamically adjusting the model learning rate in the training process; an optimal hyper-parameter combination is automatically searched through a hyper-parameter tuning method; the number of model parameters and the calculation amount are reduced through a static quantification method; exporting and deploying the model, importing the test set, and testing the performance of the model; according to the method, a self-attention mechanism is introduced into the convolutional layer of the ResNet-18 model, the weight of each channel is dynamically adjusted, the attention of the model to important features is enhanced, and the feature extraction precision is improved.

The invention provides a direct connection type P1 hybrid commercial vehicle gear shifting coordination control method and device and a vehicle. The method comprises the steps that a vehicle gear shifting request is received, assembly torque reduction is achieved through an engine and a motor, and a gearbox is made to reverse to a neutral gear; the rotating speed of the power assembly is adjusted through an engine and a motor according to the vehicle operation condition and the gear shifting time, so that the rotating speeds of the clutch before and after gear shifting are synchronous; and an assembly torque returning request is received, and the output torque of the engine and the output torque of the motor are dynamically distributed according to the accelerator response characteristic curve. The torque response speed can be increased, rotating speed overshoot and clutch contact impact are avoided, the torque returning speed is increased, and the dynamic property and comfort of a vehicle are improved.

The invention provides a pulse assembly, a suction valve, an endoscope and an implantation system, and relates to the field of medical instruments.The pulse assembly comprises a communication part provided with a channel, the channel is provided with an inlet and an outlet, and the inlet is used for being communicated with an instrument tube and / or a sheath tube; the shielding piece is arranged on the communicating part and located between the inlet and the outlet, and the shielding piece has a first state and a second state; the driving part is used for driving the shielding part to be switched between the first state and the second state; when the shielding piece is in the first state, the channel is completely opened; and when the shielding piece is in the second state, at least part of the channel is blocked. Compared with the prior art, the calculus flushing device has the advantages that the flowing speed of flushing fluid can be adjusted by intermittently changing the flowing area of the flushing fluid, and then the calculus flushing effect is effectively improved.

The invention relates to a construction method of an anti-typhoon sea wave sea-crossing steel trestle and platform adjacent to a residential building. The construction method comprises the steps that firstly, deep fusion application of BIM and VR is conducted; step 2, surveying and setting out; step 3, embedding steel bars and pouring strip-shaped concrete; fourthly, the steel pipe piles are transported and lengthened; fifthly, steel pipe piles are driven; sixthly, parallel connection and diagonal bridging construction is conducted; seventhly, bearing beams are installed; eighthly, longitudinal beams are installed; ninthly, the distribution beams are installed; tenthly, bridge deck slabs and guardrails are installed; and 11, an intelligent monitoring and early warning system.

The invention relates to the technical field of medical oxygen generators, and discloses an efficient and energy-saving PSA oxygen generator which comprises an adsorption tank, a gas inlet pipeline, a nitrogen discharge pipeline, an I-shaped balance pipeline, a first purging pipeline, a second purging pipeline, an oxygen outlet pipeline, a purity measurement pipeline, a qualified gas pipeline, an unqualified gas pipeline and an emptying pipeline, a throttling element is arranged on each of an inlet pipeline and an outlet pipeline of the adsorption tank and used for controlling the flow of gas when the adsorption tank is balanced, impact of high-speed gas on a molecular sieve is avoided, oxygen-enriched air can stay at the top of the adsorption tank in various balance modes, and desorbed low-concentration oxygen is adsorbed again to obtain the oxygen-enriched air. And the oxygen recovery rate is improved, so that the air consumption is reduced, the required power of an air compressor is reduced, and the energy consumption required by oxygen production is reduced.

The invention discloses a sulfur hexafluoride gas purifying and filtering device, belongs to the technical field of sulfur hexafluoride gas filtering, and aims to solve the problems that the impact force of gas input into a tank body is relatively strong, the filtering efficiency and the filtering effect are relatively poor, and water in gas needs to be transferred to other equipment for treatment when being separated. A filtering mechanism for conveniently filtering gas is arranged in the gas filtering tank, and a water removal mechanism for conveniently separating water contained in the gas is arranged in the gas filtering tank. According to the sulfur hexafluoride gas purifying and filtering device, the air bellow is connected to the inner end of the air inlet pipe arranged above the filtering mechanism, the hedging air pipes are arranged on the two sides of the air bellow, and the air outlet ends of the hedging air pipes are oppositely arranged; therefore, speed reduction of the high-speed gas is achieved through hedging.

The utility model discloses a GGD type low-voltage switch cabinet, and relates to the technical field of switch cabinets. The switch cabinet comprises a supporting base and a switch cabinet box body, a supporting frame is arranged at the top of the supporting base, a heat dissipation fan is clamped in the center of the bottom of the supporting frame in a penetrating mode, a plurality of protection air bags are clamped between the supporting base and the supporting frame in a rotating mode, and the switch cabinet box body is clamped between the supporting base and the supporting frame. And a rotary mounting frame is arranged in the center in the switch cabinet box body. According to the utility model, through the arrangement of the supporting base and the switch cabinet box body, the problems that most switch cabinets are cuboids, the internal space is difficult to fully utilize, or the installation, maintenance and operation are relatively inconvenient, the cabinet door which does not influence the operation is generally relatively complex in structure and relatively high in operation difficulty, and the switch cabinets are inevitably collided by the outside when in use are solved.

The invention discloses a static scroll plate assembly, a scroll compressor and refrigeration equipment. Wherein the static scroll plate assembly comprises a plate body and a non-return structure, the plate body is provided with a compression channel and an air supply channel, and the air supply channel is provided with a first end communicated with the compression channel and a second end used for being connected with an enthalpy increasing pipe fitting; the non-return structure is arranged on the disc body, the non-return structure is provided with a movable valve element, and the valve element can move relative to the air supply channel so that the air supply channel can be communicated from the second end to the first end in a one-way mode; the movement direction of the valve element is not parallel to the axial direction of the air supply channel. According to the technical scheme, impact caused by the fact that gas in the compression cavity flows backwards into the gas supplementing and enthalpy increasing system can be prevented, and vibration and noise are reduced. And meanwhile, the movement direction of the valve element is not parallel to the axial direction of the air supply channel, so that the blocking force to the supplied air flow can be reduced, the flow of the supplied air flow is increased, and the air supply enthalpy increasing efficiency is improved.

The invention relates to the technical field of water conservancy flood control engineering, in particular to a multi-element monitoring intelligent flood control dam. The system comprises a dam body structure system and a monitoring system, the monitoring system comprises a water body monitoring system and an environment monitoring system, the dam body structure system comprises a fixed dam body and a movable dam body, and the water body monitoring system comprises a water level monitoring device, a flow monitoring device and a flow velocity monitoring device. The environment monitoring system comprises a rainfall monitoring device and a soil body monitoring device. The dam body structure system is used for adjusting water storage and flood control, the monitoring system is used for monitoring related data of a dam body and a river channel, disaster prediction and early warning can be conducted by means of various data, the safety of the dam and the downstream is effectively guaranteed, and the water body monitoring system is beneficial for guaranteeing monitoring of the upstream of the dam body. The environment monitoring system is favorable for predicting the influence on the river channel and the dam body through monitored environment data, and comprehensively judging and predicting natural disasters and environment changes.

The invention provides a culture pond water flow adjusting method and device, electronic equipment and a storage medium, and is applied to the technical field of recirculating aquaculture. The environment temperature of a culture pond and the variable quantity of the environment temperature are obtained, and when the environment temperature exceeds a first preset temperature interval and the variable quantity is small, the water flow is adjusted; the current water flow velocity is obtained to evaluate whether the water flow needs to be adjusted to adapt to temperature change and keep the stability of water quality and fish growth environment; through reference of historical data, an adjustment strategy of the water flow velocity can be formulated more scientifically, and unnecessary pressure on fishes due to blind adjustment is avoided. The water flow velocity is limited to be within a safe range, impact on fishes due to too fast change of the water flow velocity can be avoided, and comfortable and healthy growth of the fishes is ensured. Therefore, the method has the beneficial effects that the formation of a stagnant water area can be prevented, and the impact on fishes caused by too fast change of the water flow velocity can be avoided.

The invention relates to the field of traditional Chinese medicines, in particular to a traditional Chinese medicine composition for tonifying qi and blood and treating hypomenorrhea caused by deficiency of qi and blood and a preparation method thereof. The composition is prepared by carefully selecting a plurality of traditional Chinese medicinal materials with the effects of tonifying qi and blood, regulating menstruation and nourishing blood and combining the traditional Chinese medicinal materials according to a specific proportion, and comprises ginseng, codonopsis pilosula, lucid ganoderma, astragalus membranaceus, angelica sinensis, peach kernels, donkey-hide gelatin, longan aril, Chinese dates, Chinese yams, radix polygonati officinalis, fructus lycii, poria cocos, roses and pericarpium citri reticulatae. The traditional Chinese medicine composition is prepared through the processes of extraction, double-effect concentration, filtration, blending and the like through scientific proportioning and a unique processing technology, aims to effectively improve the symptom of scanty menstruation caused by deficiency of qi and blood of women, recover normal menstruation, condition the body and improve the overall health level, has good safety and effectiveness, and is worthy of popularization and application. And a new choice is provided for health management of women. The traditional Chinese medicine composition for tonifying qi and blood and treating hypomenorrhea caused by deficiency of qi and blood is safe, small in side effect, efficient, convenient and good in taste.

The invention belongs to the technical field of transportation devices, and particularly relates to a composite cover plate finished product transferring and stacking device and a transferring and stacking method.The composite cover plate finished product transferring and stacking device comprises a conveyor, a steering engine and a supporting frame are arranged at the tail end of the conveyor, a moving assembly is arranged on the supporting frame, and a lifting driving assembly is arranged on the moving assembly; a clamping assembly is arranged on an output shaft of the lifting driving assembly, the lifting driving assembly drives the clamping assembly to do lifting motion, the clamping assembly comprises a clamping main body, the clamping main body is provided with two side plates which are oppositely arranged, a push-pull driving device is arranged on one side plate, and the push-pull driving device is arranged on the other side plate. An auxiliary rotating plate capable of rotating is arranged on an output shaft of the push-pull driving device, a rotating driving device is arranged on the other side plate, a driving rotating plate is arranged on an output shaft of the rotating driving device, and the driving rotating plate drives the composite cover plate to turn over. According to the device, transferring and stacking of the composite cover plates are achieved in the mode of conveying, guiding, steering, clamping, overturning and stacking.

The invention discloses an aviation main shaft tester for applying an impact load and a continuous centrifugal load and a centrifugal loading method for simulating an engine bearing test in a blade falling state, and relates to the technical field of impact tests. The problems that an existing aviation main shaft bearing testing device can only apply stable loads and cannot apply impact loads and centrifugal loads at the same time are solved. One end of a spindle is connected with a spindle motor driving shaft through a flexible coupler, the spindle is rotationally connected with a base through a first accompanying test bearing and a tested bearing, a centrifugal loading unit is located on the side, close to the spindle motor, of the tested bearing, a permanent magnet is installed at the upper end of a straight rod, a coil assembly and the permanent magnet are arranged correspondingly, and the lower end of the straight rod is connected with a thrust block. The slopes on the two sides of the thrust block make contact with the two centrifugal blocks correspondingly, and the two centrifugal blocks are connected with the main shaft through the two compression springs correspondingly. The method is used for evaluating the reliability of the engine main shaft bearing which bears the instantaneous impact load and the continuous centrifugal load in the simulated rotor blade falling state.

The invention belongs to the technical field of calcium silicate board production, and particularly relates to a plate-making forming device for improving the quality of a calcium silicate board blank, which comprises a rack, and a headbox, a felt belt, a breast roll, a forming roll and a cleaning box are mounted on the rack; a passing opening is formed in the cleaning box, the felt belt penetrates through the cleaning box from the passing opening, a guide roller is installed in the cleaning box, and the felt belt is in a U shape in the cleaning box; a water spraying plate is mounted in the cleaning box, and the felt belt is immersed below the liquid level in the cleaning box; a cleaning roller is installed in the cleaning box and makes contact with the lower surface of the felt belt, and the rotating direction of the cleaning roller is opposite to the moving direction of the felt belt. The cleaning device is simple in structure, the felt belt can be cleaned in an immersed mode in the cleaning box, the cleaning box is divided into a plurality of cleaning grids, the cleaning effect of the felt belt is improved, and slurry after cleaning is prevented from being attached to the felt belt again.

The utility model relates to the technical field of balancing machines, in particular to a balancing machine with a floating jacking mechanism, which comprises a balancing machine body and the floating jacking mechanism fixedly arranged in the balancing machine body. The balancing machine body comprises a shell, a clamping assembly, a tensioning assembly, a driving assembly and a main shaft. The clamping assembly is rotationally arranged on the top wall of the shell, the main shaft is fixedly connected with the clamping assembly, and a main shaft limiting piece is coaxially and fixedly arranged at the end, away from the clamping assembly, of the main shaft; a workpiece to be subjected to balance detection is arranged in an inner cavity of the clamping assembly, and the tensioning assembly is coaxially arranged in an inner cavity of the main shaft. The driving assembly is used for driving the spindle to rotate; the floating jacking mechanism is fixedly connected with the inner wall of the shell, and the floating jacking mechanism is arranged below the tensioning assembly. According to the floating jacking mechanism, when the air cylinder jacks the tensioning assembly, the limiting fastener abuts against the main shaft limiting piece, the situation that the tensioning assembly drives the main shaft to ascend while ascending, and consequently the main shaft and the shell are impacted is avoided, and the service life of the balancing machine is prolonged conveniently.