36results about How to "Increased safety and longevity" patented technology

The invention relates to the field of intelligent mobile equipment design and accessories, in particular to an anti-overcharging charging method and an anti-overcharging device of intelligent mobile terminal equipment. The anti-overcharging charging method is characterized in that a controller is arranged in a charging line between the intelligent mobile terminal equipment and a charging power supply; a signal connection is arranged between the intelligent mobile terminal equipment and the controller and the controller receives the signals of the intelligent mobile terminal equipment to know the charging state of the intelligent mobile terminal equipment; and the open state and the closed state of the charging line are controlled through the controller. The anti-overcharging charging method and the anti-overcharging device of the intelligent mobile terminal equipment have the advantages that the information of the battery state of the intelligent mobile terminal equipment can be expressed as audio signals which are fed back to the charging device; the charging device can automatically cut off the charging line for charging the intelligent mobile terminal equipment in time when the battery is fully charged, the overcharging situation is avoided, and the service life and the safety of the battery of the intelligent mobile terminal equipment are greatly improved; the structure is very simple, the cost is very low and the use and the popularization are facilitated.

The invention discloses a method for in-situ growth of graphene on a metal surface based on laser and application of the method. Powdery metallic nickel is introduced to a metal substrate through a laser, and an alloy coating of the metallic nickel and the metal substrate is formed in a lap joint scanning mode; a solid carbon source is pre-coated on the alloy coating, and in-situ growth of graphene is achieved through laser irradiation. According to the method, the excellent mechanical property and corrosion and friction resistance of graphene are fully exerted, so that the metal material is high in mechanical property, corrosion resistance and friction resistance at the same time, and finally the purposes of reducing the machining cost and prolonging the service life of a metal workpieceand equipment are achieved.

The invention discloses a transformer with a self-protection function. The transformer comprises a bottom plate, supporting columns, an iron core assembly and a controller, wherein the lower part of the bottom plate is provided with a fixed base, the lower part of the fixed base is provided with a buffer plate, the buffer plate is fixedly connected with the bottom plate by means of the fixed base,the supporting columns are arranged on both sides of the bottom plate, a bracket is arranged on the upper part of the supporting columns, the bracket is fixedly connected with the supporting columnsby means of bolts, a rain shelter is arranged at the upper part of the bracket, the inner sides of the supporting columns are provided with insulating plates, the insulating plates are fixedly connected with the bottom plate by means of bolts, the iron core assembly is arranged at the inner sides of the insulating plates, and a relay is arranged at the upper part of the iron core assembly. According to the transformer with the self-protection function, a temperature and humidity sensor and a vibration sensor transmit monitoring signals to the controller, the controller compares the monitoringsignals with normal values, and the controller drives the relay to operate and drives a circuit breaking protector to switch off when the monitoring signals exceeds the normal values, so that a transformer stops operating, thereby being capable of effectively protecting the transformer.

The invention discloses a dewatering control method for eccentricity judgement based on a microphone. The method comprises the following steps that dewatering is started, and clothes are adjusted; when the dewatering rotation speed reaches N0, the clothes are weighed, and according to a clothes weight range, a noise threshold value of eccentricity generation of the clothes is determined; whether or not the dewatering rotation speed reaches a set rotation speed threshold value is detected, if yes, whether or not the volume of noise generated by clothes eccentricity is greater than a set noise volume threshold value is judged, if yes, the speed is increased continuously for dewatering, if not, the above steps are executed again, when the number of accumulated times of exceeding the noise volume threshold value is equal to a preset threshold value, the clothes are directly shaken for loosening, and dewatering is finished. According to the method, by arranging the microphone on a main PCBof a washing machine for monitoring the noise volume of an inner system of the washing machine in the dewatering process in real time, the eccentricity degree of a dewatering cylinder is judged according to the actually-measured noise volume, so that a dewatering control strategy is adjusted in time, vibration and noise are reduced, the safety of the washing machine in a dewatering operation process is improved, and the service life of the washing machine in the dewatering operation process is prolonged.

The invention discloses an environment-friendly dust removal device which comprises a box body. An empty bin is arranged in the box body. A first containing groove is formed in the box body and located above the empty bin. A second containing groove is formed in the box body and located on the right side of the first containing groove. An assembly groove is formed in the outer side wall of the box body and located on the right side of the empty bin. A hole groove is formed in the outer side wall of the box body and located above the assembly groove. A penetrating groove is formed between the assembly groove and the empty bin. A coupling shaft arranged in a vertical extending mode is arranged in the empty bin. The upward-extending section of the coupling shaft penetrates through the inner wall of the box body and is in running fit connection with the inner wall of the box body. The top extending tail of the coupling shaft penetrates into the first containing groove and is fixedly provided with a first tooth connection wheel. The upper portion of the right side of the first tooth connection wheel is in tooth connection with a second tooth connection wheel. An overlapping shaft extending towards the right side is fixedly arranged on the right side of the second tooth connection wheel. The right-side extending section of the overlapping shaft penetrates through the wall body of the box body and is in running fit connection with the wall body of the box body. The right-side extending tail of the overlapping shaft is provided with a first outer spline shaft which penetrates into the second containing groove. The environment-friendly dust removal device is simple in structure, convenient to operate, capable of achieving automatic wire winding work and high in power supply plugged connection safety.

The invention belongs to the power and electronics technical field and relates to a two-pole overcharge protection circuit. The two-pole overcharge protection circuit includes a charging module, a first switching module, a storage battery pack and a first battery management module; the first switching module is connected with the charging module to receive a charging voltage outputted by the charging module; the storage battery pack is connected with the first switching module; the first battery management module is connected with and detects the two poles of each storage battery in the storage battery pack and the first switching module; when the first battery management module detects that any one of the storage batteries is in an undervoltage state, and the first switching module receives a charging voltage, the first battery management module switches on the first switching module so as to charge the storage battery pack; and when detecting that any one of the storage batteries is in an overcharged state, the first battery management module switches off the first switching module to stop charging the storage battery pack. The invention also provides a two-pole overcharge protection circuit method which applies the above two-pole overcharge protection circuit. With the two-pole overcharge protection circuit and method of the invention adopted, overcharge protection can be provided for two poles of a storage battery in an emergency power source, and therefore, the service life of the storage battery can be prolonged, and the safety of the storage battery can be improved.

The invention relates to the technical field of refrigerator door sealing strip production devices, and discloses a corner cutting mechanism for a refrigerator door sealing strip. The corner cutting mechanism comprises a cutting mold and at least two blade grooves, wherein the cutting mold comprises a rubber strip guide groove, the rubber strip guide groove is formed in the cutting mold in a penetrating mode so that the refrigerator door sealing strip can pass through the rubber strip guide groove, and a protruding mechanism which is matched with the refrigerator door sealing strip to be limited in the vertical direction is arranged in the rubber strip guide groove; the at least two blade grooves are formed in the top of the cutting mold and are connected with the rubber strip guide groove so that blades located at the top can cut the refrigerator door sealing strip; and the refrigerator door sealing strip penetrates through the rubber strip guide groove, a driving assembly drives the at least two blades to enter the corresponding blade grooves and carry out corner cutting on the refrigerator door sealing strip, the waste sealing strip subjected to corner cutting falls into a waste groove, the whole corner cutting process is carried out in the cutting mold, safety and reliability are achieved, moreover, the blades do not need to be in a water vapor environment for a long time, the service life of the corner cutting mechanism is effectively prolonged, and the safety of the corner cutting mechanism is effectively improved.

The invention discloses a shower lifting pipe with a hydraulic self-locking function. The pipe structurally comprises a water feeding through pipe, a water inlet, a control device, a top shower adjusting device, a locking fixing ring, a shower outlet, a wall base decoration cup, a rubber sleeve, a wall base, a fixing rod, a top shower pipe, a locking nut, a sealing ring, a silicon rubber case, a connection sleeve, a fixing outer cover, a through pipe, a check valve, a connector, a small sealing ring, a clamping spring and a straight pipe. The water feeding through pipe is connected with the water inlet downwards, the control device is arranged in the water feeding through pipe, the exterior of the water feeding through pipe is fixedly connected with the top shower adjusting device through the locking fixing ring, and the water feeding through pipe is connected with he shower outlet. Pressure relief can be completely eradiated, it is ensured that the effect will not be lost, the safety of the lifting pipe is greatly improved, the service life of the lifting pipe is greatly prolonged, locking force is stable and long in lasting time, a top shower pipe is prevented from being deformed under external force, the product is concise in appearance, the economic benefit and sustainable utilization rate of the product are improved, and the product is safer and more efficient.

The invention relates to the technical field of optical components, in particular to a collimating lens design structure suitable for an optical interface component of an optical module. A collimating lens design structure suitable for the optical interface assembly of the optical module of the present invention carries out structural innovation on the lens in the optical interface assembly, and designs the light-passing part to avoid contact with the ceramic ferrule , and set the contact surface in the non-working area of ​​the lens to make physical contact with the ceramic ferrule, and ensure the effective working distance between the lens working surface and the optical fiber, greatly improving the service life and safety.

The invention discloses a method for preventing corrosion inside a soft packaging battery and an electrode lug structure. The method comprises the following steps: a, coating a positive electrode lugof a soft packaging battery with a conductive adhesive layer, and enabling the conductive adhesive layer to contact an aluminum layer of a soft packaging battery aluminum-plastic film; b, coating a negative electrode lug of the soft packaging battery with an insulating adhesive layer, wherein the negative electrode lug is in insulating isolation from the aluminum-plastic film of the soft packagingbattery. The electrode lug structure comprises the positive electrode lug and the aluminum-plastic film, wherein the conductive adhesive layer is arranged onto the surface, close to the bottom, of the positive electrode lug; the length of the conductive adhesive layer is greater than the width of the positive electrode lug; the aluminum-plastic film comprises an aluminum layer and a nylon layer on the outer surface of the aluminum layer; the surface of the conductive adhesive layer is adhered to the aluminum layer of the aluminum-plastic film.

The invention relates to a special fireproofing optical cable for metro, which comprises four optical fibers with different colors. A stainless steel pipe is arranged outside the optical fibers; a filling fiber paste is filled in the stainless steel pipe; a low-smoke halogen-free internal sheath is coated outside the stainless steel pipe; a waterproof unit is extruded and molded outside the low-smoke halogen-free internal sheath; an armoring tape is coated outside the waterproof unit; and a low-smoke halogen-free external sheath is arranged outside the armoring tape. The cable has the advantages that the special fireproofing optical cable for metro adopts the stainless steel pipe optical fiber unit, which can effectively improve waterproof, fireproof and ratproof functions, further improves safety and service life of the cable; when designing the cable, in view of convenience and environment protection of the cable construction, a semidry construction structure is adopted; the cable is easy to peel off for construction and optical fiber continuing and so on; the steel pipe optical fiber unit can bear 800 DEG C., and the normal communication side is not influenced.

The invention relates to a high-adhesive-force PVC (polyvinyl chloride) plastic coating steel wire, comprising a steel wire and a PVC (polyvinyl chloride) plastic coating coated on the steel wire. The high-adhesive-force PVC (polyvinyl chloride) plastic coating steel wire is characterized in that an adhesive is coated between the steel wire and the PVC plastic coating; the adhesive comprises the following components by weight percent: 30-50 of dimethylbenzene, 10-35 of aromatic isocyanate, 10-40 of 4, 4'- diphenylmethane diisocyanate, 5-20 of methylene diphenyl diisocyanate, 5-15 of methyl isobutyl ketone and 5-30 of phenylethane. The high-adhesive-force PVC (polyvinyl chloride) plastic coating steel wire increases the adhesive force between the matrix steel wire and the PVC coating, improves the safety of the plastic coating steel wire, and prolongs the service life of the steel wire during practical use.

The invention discloses a vehicle lithium battery pack fixing device. The vehicle lithium battery pack fixing device comprises a battery box and lithium batteries, wherein the battery box comprises an outer box and an inner box, a plurality of lithium batteries are arranged in the battery box and are uniformly arranged, ventilation heat dissipation holes and a plurality of wiring holes are arranged in both of two sides of the battery box, a shock absorption sandwiched layer is arranged between the outer box and the inner box, a temperature sensor is arranged at one side of each lithium battery, and heat dissipation fans are arranged in the ventilation heat dissipation holes. The shock absorption sandwiched layer is arranged in the device, the shock of a lithium battery pack during the travelling process of a vehicle can be substantially reduced, the lithium battery pack is effectively protected, the service lifetime of the battery pack is prolonged, and the safety of the battery pack is improved; and moreover, the temperature sensor is arranged in the battery box, the heat dissipation fans are arranged at two ends of the battery box, the temperature sensor and the heat dissipation fans are in control connection with a vehicle central control system, intelligent and automatic heat dissipation can be achieved, the temperature of the lithium battery pack is reduced, and excessively high temperature of the battery pack due to long-term working is prevented.

The present invention relates to a high-strength inorganic foaming fireproof thermal-insulation wall material produced by using aeolian sand, and a production process thereof. The technical scheme comprises: preparing aeolian sand, red clay and limestone into fine powder, uniformly mixing according to a certain ratio, uniformly spreading the fine powder mixed material into a firing mold, loading the mold into a high-strength fireproof steel mesh in an inner-fixation manner, arranging in the middle of the fine powder mixed material, and carrying out high temperature kiln firing to achieve the integrated firing cooling molding of the mixed material and the fireproof steel mesh in one time. The beneficial effects comprise that: the whole support construction strength of the plate can be adjusted and enhanced through the strength of the steel mesh arranged in the middle of the plate, such that the plate can provide the large application space in the project while the safety and the service life of the building plate in the use process can be increased.

The invention relates to the technical field of intelligent garages, in particular to an intelligent garage with an overhead telescopic type shielding mechanism. The intelligent garage with the overhead telescopic type shielding mechanism comprises a reinforced concrete garage body, a roller shutter garage door positioned at the opening position of the garage body, an electric roller shutter mechanism installed on the top surface of the inner portion of the garage body and used for driving the roller shutter garage door to open and close and an overhead motor. According to the intelligent garage with the overhead telescopic type shielding mechanism, a bottom telescopic groove with a built-in internal extension frame is formed in the lower end of a rain shielding plate at the top, and an external thread transmission rod at the front end of the overhead motor drives the internal extension frame to stretch and contract back and forth, so that a shield cover capable of shading sun and shielding rain can be formed on the front side of the upper end of the garage as required, and the shield cover is matched with a lateral water guide plate, so that water is effectively prevented from entering from the front end of the garage, people can conveniently enter and exit the garage, and meanwhile the safety of the garage and the garage roller shutter door is improved, and the service life of the garage and the garage roller shutter door is prolonged.

The invention discloses an inner hole positioning device, an inner hole positioning method and a climbing mechanism. A lower air cylinder is arranged in an upper air cylinder, a cylinder cover of thelower air cylinder is connected to a piston rod of the upper air cylinder, a first upper cavity is formed in the top of the piston rod of the upper air cylinder, a first lower cavity is formed in thebottom of the piston rod of the upper air cylinder, a second upper cavity is formed in the top of a piston rod of the lower air cylinder, a second lower cavity is formed in the bottom of the piston rod of the lower air cylinder, and the first upper cavity, the first lower cavity, the second upper cavity and the second lower cavity are separately connected to an inflating pipeline through air via ports; a paw core penetrates through a through hole in the middle of the piston rod of the upper air cylinder, the bottom of the paw core is connected to the cylinder cover of the lower air cylinder, slide blocks sliding axially are arranged on the outer wall of the paw core, reversed L-shaped grooves are formed in the bottoms of the slide blocks, bumps equal to the slide blocks in quantity are arranged on the top of the piston rod of the lower air cylinder, and the dimensions of the bumps fit the reversed L-shaped grooves. The inner hole positioning device provided by the invention is reliablein structure and stable to position an inner hole, prevents positioning failure, is light in weight and large in bearing capacity, and monitors the positioning state in real time.

The invention provides a battery partition heating method, system and device and a storage medium, and the method comprises the steps: dividing a battery into a plurality of partitions, and judging whether each adjacent temperature difference is smaller than a temperature difference heating threshold value or not, the adjacent temperature difference being the temperature difference between the adjacent partitions of the battery; whether the temperature value of the subarea with the lowest temperature is smaller than a local heating threshold value or not is judged; and if at least one adjacent temperature difference is greater than or equal to the temperature difference heating threshold value and the temperature value of the subarea with the lowest temperature is smaller than the local heating threshold value, selectively heating the plurality of subareas of the battery until each adjacent temperature difference of the battery is smaller than the temperature difference set value. And the service life and the safety of the whole battery are improved.

The invention discloses a secret key refreshing system and method in a quantum secret communication system, the system comprises a first quantum communication service station, a second quantum communication service station and quantum secret communication clients, and the quantum secret communication clients comprise a common client and a secret key refreshing client. Near field communication can be carried out between the common user side and the key refreshing user side, the common user side is equipped with a common quantum key card, and the key refreshing user side is equipped with a key refreshing quantum key card. The method has the beneficial effects that a new symmetric key pool can be calculated according to the key refreshing parameter by combining the symmetric key pool and the key refreshing parameter obtained from the key refreshing user side, so that under the extreme condition that the symmetric key pool in a certain quantum key card is cracked, the key refreshing parameter cannot be obtained by an enemy, and the key refreshing parameter cannot be obtained by the enemy; and the key pool of the quantum key card for backup cannot be cracked.

The invention provides a diaphragm plate capable of controlling welding shrinkage and cross slope precision and a manufacturing method thereof, and the manufacturing method comprises the following steps: determining a design structure of the diaphragm plate and a starting point of a process cross slope, the whole partition plate design structure is rotated downwards by the gradient of i% around the starting point of the process cross slope, the top edge of the transverse partition plate and the symmetric center line extend and intersect to obtain a transverse partition plate process structure, the length of the extension line of the top edge of the transverse partition plate in the transverse partition plate process structure is h, and the extension length of the symmetric center line is h; compensating the manufacturing width of the corresponding top plate according to the value, wherein H * i% is approximately equal to H; the end of the diaphragm plate, the starting point position of the process cross slope and the angle and the height of the bottom edge of the diaphragm plate are all the design theoretical values and are not changed; and the U rib notch spacing of the diaphragm plate is increased by the reserved process quantity A according to the design theoretical values. The problems that the plate unit assembly precision is poor and the bridge deck cross slope precision is not easy to control due to overall splicing welding deformation of the large wide steel box girder are solved.

The invention relates to a recoverable self-repairing gel-state electrolyte and a preparation method and application thereof, and solves the technical problems of harsh environment requirement, single performance or higher use environment requirement of the preparation method of the existing electrolyte, the recoverable self-repairing gel-state electrolyte contains epoxy resin and a cross-linking agent, the epoxy resin is one or a combination of more of DGEBA, PEGDGE, DGEBF, DGEBS, EPS25 and EPS70; and the cross-linking agent is one or a combination of more of 4-AFD, 2-AFD, DTDA, MPD, DETA, DDM and IPD. The invention also provides a preparation method and application thereof. The method can be applied to the field of preparation of battery materials.

The invention relates to a tire, which comprises several tire blocks. Each tire block has an external surface with outward projection and two sidewalls, an extension line is defined at a surface of astraight segment of each sidewall, each extension line comprises a first boundary point on each straight segment, and a first transverse reference line is formed by two first junction point lines; a second transverse reference line is defined at the external surface, two second boundary points are formed by two ends of the second transverse reference line and the external surface, and the length of the second transverse reference line is 0.85 times of the length of the first transverse reference line. The distance between the center of the second transverse reference line along a vertical direction and the external surface is 0.2-0.8 mm. Thereby, even wearing of the external surface of the tire blocks, good water drainage and road holding with ground can be kept.

The invention discloses a pump based intelligent control system, and relates to a control system. The problems that when pressure abnormality happens, liquid cannot meet the specified requirement, andeven the service life of a pipeline is influenced are solved. According to the technical scheme, the pump based intelligent control system comprises a master control terminal, a login module, a pressure detection module and an emergency stop module. Login data and pressure benchmark data are preset in the master control terminal. When login information is consistent with the login data, the system is activated, and pressure detection signals output by the pressure detection module are sought by users. When the pressure detection signals are larger than the benchmark data, the emergency stop module is started so as to achieve the pump stop work. According to the pump based intelligent control system, through detection on the pressure in a pump, the use state of the pump is detected all thetime, stop can be achieved once one end exceeds the preset pressure benchmark data, and therefore the service life is prolonged, and safety is improved.

Provided are a power supply circuit (10), a power supply device and a control method. The power supply circuit (10) includes a primary rectification unit (11), a modulation unit (12), a transformer (13), a secondary rectification filter unit (14), a current feedback unit (15) and a control unit (16). The power supply circuit (10) removes the liquid electrolytic capacitor on the primary side, so that the volume of the power supply circuit is smaller and the use is safer. In addition, the control unit (16) can determine the voltage type of the input alternating current, and set the current limiting value in the current feedback unit (15) according to the voltage type of the alternating current, so that the use of the power supply circuit (10) is more flexible .

The invention relates to the technical field of alloy materials, in particular to a Ca-containing magnesium alloy sacrificial anode and a preparation method and application thereof. The magnesium alloy sacrificial anode comprises a magnesium rod body made of a magnesium alloy material, and the magnesium alloy material comprises, by mass, 4.7%-7.4% of Al, 2.2%-3.9% of Zn and 0.004%-1.7% of Ca. According to the magnesium alloy sacrificial anode, the grain of the magnesium alloy is refined by adding a proper amount of Ca, the distribution of the Mg17Al12 phase in the structure is improved, the current efficiency of the magnesium alloy sacrificial anode is larger than or equal to 58%, for example, the current efficiency is 60.5-61.5%, and the problem that the corrosion rate is too high when an existing magnesium alloy material serves as a sacrificial anode material can be solved. In a water heater, the magnesium alloy sacrificial anode can effectively protect the inner container material of the water heater and is resistant to corrosion, no obvious particle falling phenomenon exists on the surface, the service life of the water heater is effectively prolonged, and the safety of the water heater is effectively improved.

The invention provides a battery locking mechanism for battery replacement of an automobile. The battery locking mechanism comprises a base beam arranged between battery frames, a press-fit type locking mechanism is arranged on the front end face of the base beam, the press-fit type locking mechanism comprises a press-fit assembly and a driving rod arranged outside the press-fit assembly, the driving rod can rotate and drive the press-fit assembly to press the battery pack in the direction of the base beam. An operator only needs to rotate the press-fit assembly through the driving rod, the press-fit assembly can get close to and abut against the battery pack, locking work is completed, a locking rotating shaft in the press-fit assembly performs role switching between a rotating shaft body connected to the driving rod and a lead screw body for driving a press-fit base, and battery locking is smoothly achieved.

The invention discloses a double-tube iron core transformer for a sound box, the transformer includes a housing and transformer bodies, the plurality of transformer bodies are arranged inside the housing, each transformer body comprises an XLR male head, XLR female head and transform device, the XLR male head and XLR female head are arranged on both sides of the transform device, a fixed plate isarranged at the upper side of the interior of the transformer device, a magnetic core is arranged on an iron core, a first winding group and a second winding group are respectively arranged on both sides of the magnetic core, an input terminal lead is arranged on the first winding group, an output terminal lead is arranged on the second winding group, line holes are arranged at the bottoms of theXLR male head and the XLR female head, which has the beneficial effect that the device of the transformer is arranged inside the housing, and the housing and the transformer device inside are composedof line holes, a line protective sleeve and a water-absorbing sponge, so that the short circuit caused when the transformer device meets water is avoided, and the service life and the safety of the equipment are increased.

The invention relates to a fluid flash explosion machine with a buffer cylinder system and a processing method thereof.The fluid flash explosion machine comprises a flash explosion body and a buffer sealing mechanism, the flash explosion body is supported above the ground through a support, and the flash explosion body comprises a flash explosion high-pressure tank and a flash explosion low-pressure tank which are arranged from top to bottom; the flash explosion high-pressure tank and the flash explosion low-pressure tank are communicated through a sealing seat pressure relief opening, the buffering sealing mechanism comprises a sealing cover, a bidirectional high-pressure air cylinder and a buffering piece, the sealing cover blocks the sealing seat pressure relief opening, an air cylinder body of the bidirectional high-pressure air cylinder penetrates through the bottom of the flash explosion low-pressure tank, and the buffering piece is arranged on the sealing cover. The top of an air cylinder push rod of the bidirectional high-pressure air cylinder is connected with the sealing cover, and the buffering piece is installed on the ground corresponding to the lower end of the air cylinder push rod. Through the arrangement of the bidirectional high-pressure air cylinder, the flash explosion impact force cannot directly act on the flash explosion main body, the safety of the flash explosion equipment is improved, and the service life of the flash explosion equipment is prolonged.

The invention belongs to the technical field of new energy automobiles and especially relates to a new energy automobile safety charging device. A problem that an existing charging device of a new energy automobile is low in safety coefficient is solved. The following scheme is provided. The device comprises a supporting shell and four supporting legs, the four supporting legs are installed on outer walls of four corners of a bottom of the supporting shell through bolts respectively, an installation shell is fixedly installed on the outer wall of one side of the supporting shell, an installation groove is formed in the outer wall of the center of the bottom of the installation shell, and an annular rubber pad is fixedly installed on the inner wall of a circumference of the installation groove. In the invention, according to the new energy automobile safety charging device, the annular rubber pad and the annular supporting block are arranged, the circumferential outer wall of the bottomof the annular rubber pad and the circumferential outer wall of the top of the annular supporting block are both arranged to be in an arc opening shape, the annular supporting block can be inserted into the annular rubber pad conveniently, the annular rubber pad seals the mounting shell, and a storage effect is improved.

The invention provides a lamination of a permanent magnet motor stator core, which belongs to the field of motors. The lamination comprises a plurality of stator slots with notches; the notches comprise a notch A and a notch B; and the radial size of the notch A is larger than that of the notch B. According to the invention, the notches with at least two sizes are used for mounting slot wedges with corresponding sizes, and the larger notch A can bear greater stress, so that the safety is improved, and the service life is prolonged.

The invention provides a novel mine hole wastewater permeation filtration type plugging system. The novel mine hole wastewater permeation filtration type plugging system comprises a mine hole plugging unit, a permeable reactive barrier unit and a medicament storage unit, the mine hole plugging unit comprises a plugging wall body and a drainage pipeline, and the drainage pipeline is connected to the bottom of the plugging wall body; the permeable reactive barrier unit sequentially comprises a water inlet tank, a multi-stage reaction tank and a water outlet tank, and the whole permeable reactive barrier unit is positioned below the drainage pipeline; medicament storage devices filled with different medicaments are placed in the multi-stage reaction tank; holes are formed in the side face of the medicament storage device. And adjacent water inlet groove openings and water outlet groove openings of the water inlet groove, the multi-stage reaction groove and the water outlet groove are staggered up and down, so that a flowing path of wastewater is in a meandering flow type. The multiple stages of reaction tanks are respectively a quartz sand reaction tank, a limestone reaction tank, a steel slag reaction tank and a manganese sand zeolite reaction tank. The acid mine wastewater deposited in the shallow layer of the mine for a long time is led out for treatment, erosion damage to the plugging system is relieved, the safety of the mine plugging system is improved, and the service life of the mine plugging system is prolonged.