160results about How to "There will be no security risks" patented technology

The present invention discloses a battery cell simulator of a power battery pack, which can simulate complex characteristics of a power battery in a dynamic state, high stability in a static state and a heavy-current charge and discharge capability. The battery cell simulators can be connected in series to work, and each pair of the battery cell simulators needs to isolate with each other, so as to meet the requirements of different detected objects. When the battery cell simulator is used for detecting a BMS, voltage and current outputted by the battery cell simulator is controlled by programming, thus a flexible and strict solution can be provided for test; in addition, the battery cell simulator can simulate a test condition in an extreme case, such as high inconsistency of high temperature or low temperature operation, heavy-current charge and discharge, battery pack capacity, SoC, and SOH, cannot cause permanent damage to equipment, and cannot cause safety hidden trouble; and the battery cell simulator is low in energy consumption, convenient in test, good in repeatability and can simulate a fault state.

The invention discloses a combined module for plug electric connection of an intelligent electricity meter. The combined module comprises a lower shell, a plurality of wiring terminals arranged on the lower shell, and banana pins respectively connected with the wiring terminals, wherein a plurality of grooves are formed in the lower shell, the lower parts of the banana pins are matched and fixed with the grooves, flat parts are horizontally arranged at the tail ends of the banana pins, the flat parts penetrate through the wiring terminals and are connected with the wiring terminals by pressure welding, dual elastic sleeving heads are connected to the front ends of the banana pins, and are of a front and back dual-lantern-shaped structure along the length direction per se, and the dual elastic sleeving heads are inserted with the electricity meter. According to the invention, the combined module for plug electric connection of the intelligent electricity meter has the advantages that installation procedures are simple and convenient, requirement on the technical level of an installation worker is low, time required by installation is greatly shortened, safety coefficient is high, connection nodes among internal components are few, the neat, stable and reliable effects are achieved, connection is stable, and potential safety hazards caused by short circuiting, touch and the like are avoided.

The present invention provides a preparation method of a proton exchange membrane. The method comprises dispersing perfluorosulfonic acid resin in an organic solvent with a high boiling point of 140-205 DEG C to obtain a perfluorosulfonic acid resin solution; adding an organic thermal stabilizer and aromatic diamine into the perfluorosulfonic acid resin solution, and adding aromatic dianhydride to obtain a polyamic acid perfluorosulfonic acid resin solution; coating the polyamic acid perfluorosulfonic acid resin solution on a glass plate, and drying to obtain a polyamic acid perfluorosulfonic acid resin composite membrane; and soaking the composite membrane in a mixed solvent containing acetic anhydride and pyridine, and allowing cyclodehydration reaction at a room temperature to obtain a polyimide perfluorosulfonic acid resin proton exchange membrane. The prepared proton exchange membrane has high electrical conductivity and good high-temperature resistance, and it is free of through holes, to thereby improve safety of batteries.

The invention discloses an electrorheological fluid shock absorber and a control method, control unit and ECU thereof and an automobile. The electrorheological fluid shock absorber comprises pistons, a piston rod arranged on the pistons, a working cavity, giant electrorheological fluids and damping channels. The pistons divide the working cavity into an upper working cavity body and a lower working cavity body which are filled with the giant electrorheological fluids. The damping channels communicate with the upper working cavity body and the lower working cavity body correspondingly. The giant electrorheological fluids can flow through the damping channels from the upper working cavity body and then flow to the lower working cavity body, or the giant electrorheological fluids can flow through the damping channels from the lower working cavity body and then flow to the upper working cavity body. The damping channels are connected with a power source through wires. According to the electrorheological fluid shock absorber, a large damping force debugging range under relatively low voltage can be obtained; damping force changing along with the change of the voltage is in short-sighted linear change, so that control is convenient; and meanwhile the requirement for gaps of the damping channels is low, and the electrorheological fluid shock absorber is not liable to penetrate and block.

The invention provides a processing method for raw materials of a rattan plaited craft. The processing method comprises the following steps that raw material rattan within a certain diameter range is obtained, the surface of the raw material rattan is polished and treated to be in the same diameter magnitude and the same length, and 30 rattan is bundled as a set; the bundled raw material rattan is placed in dehydration liquid for 8-12 hours to be soaked and dehydrated; the raw material rattan is washed with clean water to remove the dehydration liquid adhering to the surface after the dehydration; drying is conducted with hot-blast air, the drying is divided into three stages, and the rattan is dried to nine into dry; and the rattan is separated and tiled under the sunlight condition for 20-30 hours to complete the last-stage drying. According to the processing method for the raw materials of the rattan plaited craft, the anticorrosion and inflaming retarding processing treatments are conducted, so that the service life is long and the fireproof safety is high. The efficiency of dehydration of the adopted dehydrating and drying methods is high, and the disinfection treatment is conducted on the raw material rattan in the drying process, so that the batch production process is achieved.

Disclosed is a wireless temperature detection device for an oven. The wireless temperature detection device is characterized by comprising a closed shell, and the small end is in a slender probe shape; an antenna is contained inside the large end of the shell; a wire is contained inside the small probe-shaped end of the shell, and one end of the wire is connected with the antenna; an acoustic surface wave temperature sensor is contained inside the end part of the small end of the shell, and the other end of the wire is connected with the acoustic surface wave temperature sensor. The wireless temperature detection device has the advantages that due to the fact that data transmission is achieved not through the wire connected with a circuit board, and the acoustic surface wave temperature sensor inside a probe of the shell is excited, so that temperature data are read from signals fed back by the acoustic surface wave temperature sensor, and no potential safety hazards exist even when the wireless temperature detection device is used at high temperature for a long time; the temperature inside food can be accurately detected and can be conveniently monitored, the heating degree of the food can be known in time, and a detection system is prevented from being disturbed by external temperature; the wireless temperature detection device is compact, small and exquisite in whole structure and convenient to hold and facilitates measurement, no special installation is needed, and using is easier and more flexible.

The invention relates to a new-energy lighter. An electronic oscillation circuit, a boosting type DC / DC (direct current) conversion circuit, a lighting circuit and a money detecting circuit are arranged in a casing of the lighter. A switch is arranged on one side of the casing, a lamp and a money detecting lamp are arranged at the bottom of the casing. The direct current carried by the lighter can be used as lighting energy source, high-frequency pulse current can be generated through the oscillation circuit, high-frequency voltage is generated at two ends of a transformer coil, high-voltage discharge sparks can be generated by outputting in an arc discharge manner via a pair of high-voltage discharge needles and can be used for lighting combustible matter in any weather. A power source socket of the lighter is assorted with a universal plug and an adapter, so that the lighter can be used for charging cellphones or digital products in various specifications. Meanwhile, the lighter can be used for lighting and detecting money, and is safe, environment-friendly, energy-saving in use, small in size, convenient to carry, practical and convenient.

The invention discloses a height adjustable docking block. The height adjustable docking block comprises a base and a supporting seat, wherein the base comprises a base plate and a sleeve pipe; the supporting seat comprises a top plate and a lower sleeve pipe, and the lower sleeve pipe is slidably in cup joint into the sleeve pipe. The height adjustable docking block also comprises an adjusting device; the adjusting device comprises cylindrical gears rotatably connected with the outer surface of the sleeve pipe; the cylindrical gears are externally engaged with a rack; the rack is slidably connected to the outer side of the sleeve pipe; one end of the rack is articulated with a swing rod; the other end of the swing rod is articulated with a jacking block; the jacking block is supported onthe lower surface of the base plate; the outer side of the sleeve pipe is articulated with a rotating block; the swing rod passes through the rotating block to be slidably connected with the rotatingblock; a non-return mechanism is further arranged; the non-return mechanism comprises ratchets arranged on the surface of the rack; the ratchets are matched with a pawl; the pawl is articulated with the base; and the pawl is fixedly connected with a reset spring. The cylindrical gears rotate to drive a plane mechanism formed by the rack, the swing rod, the rotating block and the jacking block anddrive the supporting seat to move up and down, and a ratchet wheel is matched with the ratchets to prevent the supporting seat from falling down.

The invention discloses an intelligent and environment-friendly monitoring system which comprises a control module, a data collecting module and a trigger module. The control module is electrically connected with the data collecting module, the trigger module, an inverter, a data storage module, a wireless receiving and transmitting module and a display module; the data collecting module is used for collecting various parameters of a greenhouse; the trigger module is used for triggering various functional modules; the data storage module is used for storing data transmitted to the control module by the data collecting module; the wireless receiving and transmitting module is used for transmitting and receiving the data; the display module is used for displaying the data collected by the data collecting module; the data collecting module is electrically connected with a temperature sensor, a humidity sensor, an oxygen detecting device and an illuminance meter. According to the intelligent and environment-friendly monitoring system, power is supplied through solar energy, energy saving and environmental protecting are achieved, real-time monitoring is performed through the temperature sensor, the humidity sensor, the oxygen detecting device and the illuminance meter, the crop growth environment is intelligently regulated, and the system is suitable for popularization.

The invention discloses a programmable analog heating apparatus used for a battery thermal management test and a control method for the programmable analog heating apparatus. The programmable analog heating apparatus comprises an upper computer and a plurality of single analog heating apparatuses; the upper computer is connected with each single analog heating apparatus through a communication bus; a battery database and a working condition database are stored in the upper computer; each single analog heating apparatus is provided with a distributed control sub board, a small-sized power module, a heating apparatus and a temperature collection module; the upper computer reads the battery database and the working condition database and obtains heating power data through calculation; then the upper computer transmits the heating power data to each single analog heating apparatus through the corresponding communication bus; the distributed control sub board in each single analog heating apparatus controls the small-sized power module to output corresponding voltage and current to the corresponding heating apparatus so as to control the corresponding heating apparatus to give out heat; the temperature collection module collects the temperature data of each single analog heating apparatus and transmits the data to the corresponding distributed type control sub board; and the distributed type control sub board transmits the temperature data to the upper computer through the corresponding communication bus.

The invention discloses a spiral vertical lifting mechanism. The spiral vertical lifting mechanism comprises a bearing plate, lifting posts, upright posts and a driving device, wherein the lifting posts are vertically installed at the bottom of the bearing plate, the upright posts are circumferentially arranged next to the lifting posts, and the driving device is arranged between the bearing plate and the lifting posts and is used for driving the lifting posts to rotate; spiral ridges which are spirally coiled upwards around the lifting posts in a protruded mode are formed on the circumferential surfaces of the lifting posts, and the large diameter of the spiral ridges is greater than the diameter of a common tangent circle of a plurality of upright posts; guide grooves which are formed at equal intervals along the length direction are formed in one side, which faces towards the lifting posts, of each upright post, the guide grooves are formed in a penetrating mode along the direction of the spiral ridges, and the distance between the two adjacent guide grooves is the same as the lead of the spiral ridges; the guide grooves in the plurality of upright posts are arranged in a spiral shape consistent with the spiral ridges along the circumferential direction of the lifting posts; the spiral ridges are matched and arranged in the guide grooves of the plurality of upright posts and can be guided to lift by the guide grooves by virtue of self rotation. The spiral vertical lifting mechanism has the advantages of high lifting speed, light weight, low noise, capability of lubrication, high use safety, long service life and the like.

The invention provides a power battery charging protection device comprising a pre-charging control relay, a main motor control relay, a charging control relay and a charging protection relay. The pre-charging control relay and the main motor control relay are connected to a normalizing power supply. The charging control relay and the charging protection relay are connected to a low-voltage storage battery charging power supply. The charging protection relay is used for control coils of the pre-charging control relay and the main motor control relay to be in outage in a charging state. By the aid of the power battery charging protection device, the problems that a hybrid electric vehicle is started with electricity during charging and a charging socket carries high-voltage in outage can be solved.

The invention relates to a charging control and charging protection device for electric vehicles, in particular to an intelligent charging connector for controlling the charging protection and unexpected power outage of the electric vehicles or the handling of other unexpected things. The intelligent charging connector comprises a charging plug, a socket and an intelligent control system, wherein two weak electrode contact pins are arranged on the socket, and the length of the weak electrode contact pins is smaller than the length of charging electrode contact pins; two corresponding weak electrode jacks are arranged on the plug and are communicated with each other, the intelligent control system comprises a circuit breaker, a circuit breaker operating mechanism, a relay, a switching-on button switch, a switching-off button switch, a strong electric AC power and a weak electric AC power; and the strong electric AC power supplies power to the weak electric AC power. The invention has compact and reasonable structure, convenient operation, safety and reliability, can timely assist in handling various unexpected accidents in the charging process, eliminates unsafe factors and plays a safe protection role.

The invention provides a three-station isolation switch which comprises a switch moving contact knife switch device and a static contact knife switch device. The static contact knife switch device hasan isolated static contact knife switch and a grounded static contact knife switch which are disposed apart from each other. The switch moving contact knife switch device comprises a moving matchingmember, a transmission mechanism and an isolating moving contact knife switch, the switch moving contact knife switch device is selectively in contact with the isolated static contact knife switch andthe grounded static contact knife switch, one end of the transmission mechanism is connected to the moving matching member, the other end is connected to the isolated static contact knife switch, themoving matching member drives the transmission of the transmission mechanism, and therefore, the isolating moving contact knife switch is pulled to rotate. The three-station isolation switch has theadvantages that the three-station isolation switch has three independent isolation switches, an unrecoverable insulating failure caused by high-voltage breakdown between phases is avoided, therefore,the problem of safety hazard due to insulation aging is prevented, at the same time, the three-station isolation switch is arranged reasonably such that the whole body does not occupy extra space.

The invention relates to a jack electrical connector and a manufacturing method thereof. The connector comprises a flexible conductive leaf spring coil (1), a conductive internal sleeve (2) and a conductive external sleeve (3) which are sleeved outside the flexible conductive leaf spring coil (1) from inside to outside, wherein two folded extending ends of the flexible conductive leaf spring coil, which extend out of the conductive internal sleeve, are fixedly clamped between a through hole in the conductive external sleeve and the outer surface of the conductive internal sleeve. The manufacturing method comprises the following steps of: sleeving the flexible conductive leaf spring coil into the conductive internal sleeve, performing expansion deformation on one extending end of the flexible conductive leaf spring coil, and sleeving an auxiliary external sleeve (8) into the end by using clearance fit; and then performing the expansion deformation on the other extending end of the flexible conductive leaf spring coil, sleeving the conductive external sleeve into the other end by using the clearance fit , and extruding the auxiliary external sleeve by pressing. For the electrical connector and the manufacturing method thereof, the finished product of the electrical connector has the advantages of low temperature rise or pressure drop, small size, large contact area, good bindingforce, smooth plugging and low energy consumption; and cost is reduced, and property, quality and quantification rate are improved by adopting an integral conductive external sleeve.

The embodiment of the invention discloses a circuit control device and method. The circuit control device is applied to electronic equipment. The device comprises a charging control module, a circuitswitching module, a capacitance detection module, a first change-over switch and a first polar plate, the first change-over switch comprises a first common end, a second end and a third end. The firstpolar plate is electrically connected with the first common end; the charging control module is electrically connected with the second end; the capacitance detection module is electrically connectedwith the third end; the circuit switching module is used for controlling the electric conduction state of the first change-over switch; when the first common end is electrically connected with the second end, the second common end is electrically connected with the second end; the charging control module carries out charging through the first polar plate and a second polar plate of the charging equipment, and the capacitance detection module obtains a first capacitance value through the first polar plate under the condition that the first common end and the third end are electrically conducted, so that the stacking of devices can be avoided and the safety is improved through the device.

The invention discloses a lifting table capable of hiding cables. The table comprises a table board, a lifting assembly and table legs, a hand controller and a cross beam are arranged on the table legs, the length direction of the cross beam is perpendicular to the length direction of the table legs, the table board covers the upper end surface of the cross beam, a controller is arranged on the bottom end surface of the table board, the hand controller is connected with the controller through a first cable, a wire passing channel is arranged on each table leg, a hollow channel extending in the length direction of the hollow channel is arranged on the cross beam, a wire inlet and a wire outlet which are communicated with the hollow channel are formed in the cross beam, the wire inlet is communicated with the wire passing channel, the head end of the first cable is connected with the hand controller, the tail end of the first cable sequentially penetrates through the wire passing channel, the hollow channel and the cable outlet and is connected with the controller, the controller is connected with the lifting assembly, and the lifting assembly acts on the table board and is used for driving the table board to do lifting motion. The first cable is hidden in the table legs and the cross beam, the first cable is prevented from being exposed, potential safety hazards are eradicated, and the table is more attractive.

The invention discloses bacillus subtilis JG-1 capable of producing endo-inulinase. According to the bacillus subtilis JG-1, a pMA05 escherichia coli-bacillus subtilis shuttle plasmid is used as a skeleton for constructing pMA05-inu, pMA05-inu is converted into bacillus subtilis 168 by virtue of a chemical conversion method, and a positive transformant, namely the bacillus subtilis JG-1, is screened by virtue of a kanamycin selection marker of the plasmid in bacillus subtilis. The invention further discloses a preparation method and application of the bacillus subtilis JG-1 capable of producing endo-inulinase. The bacillus subtilis is a recognized as food safety microorganism, so that the potential risk that escherichia coli is capable of producing fructo-oligosaccharide is avoided; the fructo-oligosaccharides with relatively high purities and polymerization degrees of DP3, DP4 and DP5 can be acquired; and the bacillus subtilis has relatively high superiorities than other engineering bacteria in the production of endo-inulinase. The maximum enzyme activity of endo-inulinase is 20.16U / ml.

The invention relates to a production method of corn wine, and belongs to the technical field of wine processing. The production method comprises the following steps of: cooking, fermenting and roasting. The production method has the beneficial effect that the corn wine brewed by adopting the production method is soft in taste, mellow in aroma, and safe and reliable to drink.

The invention provides a power-off protection device for an electronic information device. The device includes a machine body. A power-off induction device is arranged in the machine body. The power-off induction device includes a heating block. A power supply disconnection device is arranged on the lower side of the power-off induction device. The power supply disconnection device includes a winding wheel. According to the invention, the power-off induction device is arranged; when the device is powered off, a signal can be sent out in time; the power supply disconnection mechanism is arranged in the device to disconnect short-circuited transmission to prevent the transmission from continuing to work, burning out the device, and causing a danger; a power supply transmission mechanism is arranged on the upper side of the power supply disconnection mechanism to transmit backup power to the device to prevent problems such as sudden loss of information; and the device has the advantages of accurate sensing, timely power-off processing, no safety hazards, and wide application range.

The invention discloses a maintenance support belonging to the field of mechanical tools. The maintenance support comprises a support frame and a travelling mechanism arranged at the bottom of the support frame, a maintained piece is fixed on the support frame, and the travelling mechanism is positioned and fixed when the maintained piece is maintained. Due to the arrangement of the maintenance support with the support frame and the travelling mechanism, the maintained piece can be fixed and positioned on the support frame, a maintenance man can maintain the bottom of the maintained piece conveniently, and as the maintained piece is positioned, the maintained piece can not swing randomly in the maintenance process so as to avoid the potential safety hazard, the safety of the maintenance man is ensured, and the maintaining efficiency is improved; and due to the arrangement of the travelling mechanism, the maintenance support can move conveniently and can be widely used.

The invention provides a process for stamping and forming a sedan car rear auxiliary frame body. The process uses a section of seamless steel pipe as a raw material, the length of the seamless steel pipe is equivalent to the unfolding length of the sedan car rear auxiliary frame body, and the seamless steel pipe is bent to be in shape similar to a finished sedan car rear auxiliary frame body and then serves as a workpiece to be machined. Two bent corners of the workpiece are shaped through a first group of dies. Straight line sections at two ends of the workpiece are shaped through a second group of dies. Two ends of the workpiece are pressed flat and formed through a third group of dies. Two ends of the workpiece are trimmed to be open circular arcs through a fourth group of dies. The open circular arcs at two ends of the workpiece are trimmed and subjected to side punching through a fifth group of dies to enable the workpiece to completely meet the design requirement. The process has the advantages that the device cost is low, the production efficiency is high, the part stability performance is good, maintenance is convenient, and the like.

The invention relates to a mosquito defending and repelling lamp which comprises a hollow shell and a mosquito-lured lamp arranged on the upper side of the shell. A draught fan and a mosquito repelling part are arranged in the shell. A mosquito storing chamber for storing mosquito corpuses is formed at the bottom of the shell. An air inlet and an air outlet which are communicated with each other are formed in the shell. The air inlet is formed in the top of the shell and can allow mosquitoes to pass through. The air outlet is located below the draught fan and can prevent mosquitoes to pass through. A night lamp assembly for illumination is arranged in the shell and located between the mosquito-lured lamp and the draught fan. The shell is at least locally transparent or semi-transparent sothat light can permeate through the shell. The mosquito repelling part absorbs mosquito repelling liquid and is arranged below the draught fan. When the mosquito-lured lamp is turned on, the draught fan works, and the negative pressure is formed in the shell so that mosquitoes can be sucked in; when the mosquito-lured lamp is turned off, the draught fan works so that the mosquito repelling liquidcan volatile. Multiple purposes are realized through the draught fan, the draught fan is matched with the mosquito repelling part for repelling the mosquitoes, no other parts need to be arranged for repelling the mosquitoes, multiple purposes are realized through one lamp, and few parts are involved.

The invention discloses a primary-secondary type movable dust removal cover vehicle for a steelmaking environment and a dust removal method, and belongs to the technical field of steelmaking environment dust removal. The dust removal cover vehicle comprises a pit, guide rails, a primary dust removal cover vehicle, a secondary dust removal cover, a sweeping unit and a limiting unit, wherein a firstladle is arranged in the pit, and a second ladle is arranged on the ground beside the pit; the guide rails are laid on the ground on the two sides of the pit; the primary dust removal cover vehicle is movably connected with the guide rails through first bottom rollers, and the primary dust removal cover vehicle move on the guide rails under the driving of a first driving part in a reciprocating mode; the secondary dust removal cover is movably connected with the upper part of the vehicle side of the primary dust removal cover vehicle, and the secondary dust removal cover move along the direction of the second ladle under the driving of a second driving unit in a reciprocating mode; the sweeping unit is fixedly connected with the bottom of the primary dust removal cover vehicle and sweepsthe surface of the guide rails along with the movement of the primary dust removal cover vehicle; and the limiting unit is used for limiting the driving distance between the first driving unit and thesecond driving unit. According to the primary-secondary type movable dust removal cover vehicle for the steelmaking environment and the dust removal method, the dust removal cover vehicle is designedaccording to the working conditions of the steelmaking environment, the operation is stable, moving is flexible, potential safety hazards are reduced, and high dust removal efficiency can be guaranteed.

The invention provides a fuel oil pump and an automobile adopting the fuel oil pump and relates to the technical field of automobile engine oil supply, in particular to the fuel oil pump and the automobile adopting the fuel oil pump. The fuel oil pump and the automobile solve the problems that when a vehicle runs on an 8-shaped road or the vehicle runs under the abnormal road conditions such as uphill and downhill, and at the moment, fuel oil in an oil storage barrel is less, the flameout phenomenon caused by deoiling of an engine can occur when the existing fuel oil pump is used. The fuel oil pump provided by the embodiment comprises an oil storage barrel, a jet pump and a drainage pipe, wherein the jet pump is fixedly arranged at the outer side of the bottom of the oil storage barrel, the drainage pipe is fixedly arranged on the inner wall of the oil storage barrel, an oil outlet of the jet pump is connected with one end of the drainage pipe, and the drainage pipe is used for making return oil flowing out from the oil outlet of the jet pump flow into the oil storage barrel through the drainage pipe.

The invention provides an information processing module. The information processing module comprises a first communication interface, a second communication interface, an information processing unit, a first storage unit and a second storage unit, wherein the first communication interface is connected with a first information input module in a communication manner through a first bus; the second communication interface is connected with a second information input module in a communication manner through the second bus; the information processing unit is used for receiving first input information from the first communication interface through the first bus by using a first communication protocol, receiving second input information from the second communication module through the second bus by using a second communication protocol, encrypting the first input information by using a first encryption protocol so as to generate first encrypted information, and generating second encrypted information by using a second encryption protocol; the first storage unit is used for storing the first encrypted information in the first storage unit; and the second storage unit is used for storing the second encrypted information in the second storage unit. According to electronic equipment provided by the invention, the hardware cost is saved, and no potential safety hazard is caused in the using process of the users.

The invention relates to a road tunnel engineering construction method. The road tunnel engineering construction method adopts the following tunnel engineering construction device. The tunnel engineering construction device comprises a bottom plate, a rotating motor, a rotating shaft, a rotating support plate, an arc-shaped rotating plate, a rotating connecting frame and a cleaning mechanism. Thecleaning mechanism comprises a cleaning wheel, a cleaning shaft, a cleaning support plate, a sliding body, a sliding spring, a cover plate and a cleaning lifting rod. The construction method for roadtunnel engineering construction by adopting the tunnel engineering construction device comprises the following steps: S1, placing the bottom plate; S2, cleaning the side wall of the tunnel; S3, scraping by the cleaning mechanism; and S4, lifting the cleaning lifting rod. The problems that when pumice stones on the side wall of the tunnel are cleaned, certain safety hidden danger exists when the side wall of the tunnel is cleaned manually, the efficiency of cleaning the pumice stones manually is low, the pumice stones are not cleaned thoroughly and the like can be solved.

The invention relates to a grounding device with automatic protection, and belongs to the technical field of power transmission safety equipment. The grounding device with automatic protection is connected with three phase lines between a high-voltage breaker and a circuit side switch through grounding wires and a grounding rod, and the grounding device includes a shell having a control panel, a grounding rod sleeve arranged in the shell and used for insertion of the grounding rod and an electromagnetic lock having an operation handle for controlling insertion of the grounding rod; an open endof the grounding rod sleeve communicates with a grounding rod in the shell, and a magnetically controlled switch is arranged at the bottom of the interior of the grounding rod sleeve; and a circuitboard having a protection circuit is also arranged in the shell. According to the grounding device, through cooperation among the electromagnetic lock, the grounding rod sleeve provided with the magnetically controlled switch and the circuit board provided with the protection circuit, misoperation behavior of mistakenly electrified installation of grounding wires and power transmission with the grounding wires can be prevented, and the device is simple in structure, convenient to operate, stable and reliable in work and good in safety performance, and thus has good comprehensive using performance.

The invention provides a laminated lithium ion battery core and an assembly method thereof and a laminated lithium ion battery comprising the same, and relates to the technical field of lithium ion batteries. The assembly method of the laminated lithium ion battery core, provided by the invention, comprises the following steps: laying diaphragm strips on the surfaces of spaced gap-coated positiveelectrode strips and negative electrode strips, rolling and cutting to obtain positive and negative electrode diaphragms, and assembling to obtain the laminated lithium ion battery core. By the assembly method, the operation is simple, the production cost is reduced while the production efficiency is improved, the defective rate of the laminated battery core is reduced, the service life of the battery is prolonged, and safety hazards are avoided even during long-term use. The laminated lithium ion battery core provided by the invention is assembled by the assembly method, and has excellent electrochemical performance, long service life and no safety hazards during long-term use. The laminated lithium ion battery provided by the invention comprises the laminated lithium ion battery core, and is worth of popularization and application.