177results about How to "Adequate fit" patented technology

The invention relates to the technical field of back contact batteries, in particular to a back contact battery assembly and a photovoltaic system.The back contact battery assembly comprises a battery string, the battery string comprises battery pieces connected in series, and the battery pieces comprise a first battery piece, a second battery piece and a first insulating strip, the first insulating strip is arranged at one end, close to the first battery piece, of the second battery piece, the first bus bar is arranged on one side, back on to the second battery piece, of the first insulating strip, the first insulating strip and the first bus bar are arranged in an extending mode in the second direction, and the first welding strip is used for electrically connecting the first bus bar and the first battery piece. The first insulating strip is provided with an extension section extending out of the first bus bar, the extension section extends out of the second battery piece, and in the thickness direction of the second battery piece, the orthographic projection of the extension section at least partially coincides with the orthographic projection of the first battery piece. According to the invention, the effective light-receiving area of the cell module can be increased, the conversion efficiency of the module is improved, the observed area of the bus bar from one side of the light-receiving surface is smaller and even can be completely hidden, meanwhile, the production difficulty can be effectively reduced, the risks of short circuit, subfissure and fragmentation of the cell piece are reduced, and the reliability is improved.

The invention relates to the technical field of back contact cells, and particularly discloses a back contact cell assembly and a photovoltaic system.The cell assembly comprises a cell string, a first insulating strip, a second insulating strip, a first electrode, a second electrode and a second electrode, the cell string comprises cells which are connected in series, the cells comprise a first cell and a second cell which are arranged in the first direction, and the first cell is arranged at the end of the cell string; the first insulating strip is arranged at one end, close to the first battery piece, of the second battery piece, the first bus bar is arranged on one side, back on to the second battery piece, of the first insulating strip, the first insulating strip and the first bus bar are arranged in an extending mode in the second direction, and the first welding strip is used for electrically connecting the first bus bar and the first battery piece. The end, close to the first battery piece, of the first bus bar is provided with an extension section, the extension section extends out of the edge of the first insulating strip in the first direction and is electrically connected with the first welding strip, and a connecting end is formed at the connecting position of the extension section and the first welding strip. According to the invention, the effective light-receiving area of the cell module can be increased, the conversion efficiency of the module is improved, the observed area of the bus bar from one side of the light-receiving surface is smaller, even the bus bar can be completely hidden and is more beautiful, meanwhile, the production difficulty can be effectively reduced, the risks of subfissure and fragmentation of the cell piece are reduced, and the reliability is improved.

The invention relates to the technical field of back contact batteries, and particularly discloses a back contact battery assembly, which comprises a battery string, a first insulating strip, a first bus bar, a second insulating strip, a second bus bar, a second bus bar, a third bus bar and a fourth bus bar, the first bus bar is arranged on the side, back on to the second battery piece, of the first insulating strip, the first insulating strip and the first bus bar extend in the second direction, the first welding strip is used for being electrically connected with the first bus bar and the first battery piece, and in the first direction, the two ends of the first insulating strip are provided with a first widened section and a second widened section which extend out of the edge of the first bus bar; the first widening section and the second widening section are sequentially arranged in the direction away from the first battery piece, and the width of the second widening section is smaller than that of the first widening section. According to the invention, the effective light-receiving area of the battery assembly can be increased, the conversion efficiency of the assembly can be improved, the observed area of the bus bar from one side of the light-receiving surface is smaller, even the bus bar can be completely hidden and is more beautiful, meanwhile, the production difficulty can be effectively reduced, the risks of short circuit, subfissure and fragmentation of the battery piece are reduced, the reliability is improved, and the double-sided rate of the battery assembly can be ensured.

The invention discloses an online water pollution monitoring device with a self-cleaning function, and belongs to the technical field of water environment monitoring equipment, the online water pollution monitoring device comprises a floating platform, a plurality of floating bodies are connected to the peripheral side of the bottom of the floating platform in a surrounding manner, an equipment box is mounted at the bottom of the floating platform, a protective mesh enclosure is connected to the bottom of the equipment box, and a water suction pump is mounted in the equipment box. According to the device, water bodies with corresponding depths are extracted through liquid inlet nozzles with different depths, the water bodies are fed into a detection box, the water body environment is monitored through a detection probe, after the probe is used, distilled water obtained through condensation of a condensation box can be extracted through a water suction pump, and after the distilled water is fed into an inner flushing mechanism, liquid spraying flushing can be conducted on the multiple detection probes; algae in water are prevented from adhering to the surface of the probe through flushing of distilled water, the detection precision is improved, meanwhile, the scraping and sweeping mechanism moves to scrape the algae adhering to the outer side of the protective net cover, and water pumping is prevented from being affected.

The invention discloses a lithium battery module thermal runaway fire-fighting simulation test device and a control method, and relates to the technical field of lithium battery module test.The lithium battery module thermal runaway fire-fighting simulation test device comprises a simulation test box and a box door hinged to one side of the simulation test box, a heating mechanism is arranged on the simulation test box, and a fire extinguishing mechanism is arranged in the simulation test box; a pushing assembly is arranged on one side of the top of the fire extinguishing mechanism; and the cooling pool is fixedly arranged on one side in the simulation test box, and the cooling pool is used for extinguishing the fire of the lithium battery. By arranging the fire extinguishing mechanism, fire extinguishing can be conveniently conducted on a burning lithium battery through cooperation of a cooling pond and a spraying head, meanwhile, the lithium battery is borne through a bearing assembly, then the bearing assembly is driven to move through a driving assembly, and through cooperation of an elastic assembly and a concave-convex assembly, the bearing assembly and the lithium battery oscillate; and therefore, the burning device is vibrated, and meanwhile, the cooling liquid on the lithium battery can be vibrated.

The utility model relates to the field of mine surveying, in particular to a surveying and positioning device for mine engineering. Comprising a supporting disc, the upper surface of the supporting disc is provided with a measuring instrument, the arc surface of the supporting disc is provided with an adjusting structure, the adjusting structure comprises a plurality of supporting plates, the supporting plates are rotatably connected with the supporting disc, the lower surface of the supporting disc is fixedly connected with a fixing rod, and the arc surface of the fixing rod is in threaded connection with an adjusting pipe; the arc surface of the adjusting pipe is rotationally connected with a moving ring, the outer arc surface of the moving ring is rotationally connected with a plurality of connecting rods, and the ends, away from the moving ring, of the connecting rods are rotationally connected with the supporting plate. According to the measuring and positioning device for mine engineering, the multiple supporting plates can be folded and unfolded at the same time by operating the adjusting pipe, the movable plate can conveniently stretch out of and be folded into the supporting plates by adjusting the limiting frame, and the assembling and erecting efficiency of a measuring instrument is improved; and thus, the working efficiency of mine surveying operation is improved.

The invention relates to the field of rail transit, in particular to rail detection and maintenance equipment for urban rail transit, the rail detection and maintenance equipment is applied to a rail and comprises a rail car and processing mechanisms arranged at the front end of the rail car, the rail is composed of two parallel steel rails, and each steel rail is provided with one processing mechanism. The processing mechanism comprises a detection assembly and a maintenance assembly, the rail car is provided with a rack for installing the detection assembly and the maintenance assembly, the maintenance assembly is located between the detection assembly and the rail car, and the maintenance assembly comprises rolling wheels matched with the steel rails and a rotary driver used for driving the rolling wheels to rotate. The foreign matter on the steel rail is detected through the detection assembly, the maintenance assembly is started, the scraping strip and the surface of the steel rail are continuously rubbed to remove the foreign matter in the rotating process of the driving roller, the scraping strip can be more stably attached to the surface of the steel rail along with the synergistic effect of the rubber mat and the pressure adjusting assembly, and the cleaning efficiency is improved.

The utility model is applicable to the technical field of pipe fitting processing, and discloses a pipe fitting notch polishing device, which is characterized in that a hollow frame is fixedly mounted on the surface of one side, far away from a supporting plate, of a connecting plate, a two-way screw rod is rotatably mounted in the hollow frame through a bearing, and transmission sleeves are movably sleeved on the surfaces of two ends of the outer side of the two-way screw rod; four groups of attaching arc plates are movably embedded in the side edge of the hollow frame, a transmission block is fixedly mounted on the surface of the outer side of each transmission sleeve, a push rod is hinged to the outer side of each transmission block through a rotating shaft, and the end, away from the transmission sleeve, of each push rod is hinged to the outer side of the corresponding attaching arc plate through a rotating shaft; a servo motor is fixedly installed on the surface of the end, away from the supporting plate, outside the hollow frame. According to the technical scheme, the attaching arc plate can be attached to the inner wall of the pipe fitting to conduct abutting and limiting treatment on the pipe fitting, abutting and reinforcing can be conducted on different positions in the pipe fitting, and the stability of the pipe fitting in the grinding and placing process is further improved.

The invention belongs to the technical field of carrying tools, and particularly relates to a suspension weight reduction carrying tool which comprises a bag body and a bag belt, a suspension assembly is connected between the bag body and the bag belt and comprises a frame connected with the two ends of the bag belt, a damping shell is connected to the middle of the frame, a damping block is movably arranged in the damping shell, and the whole damping shell is of a cake-shaped structure. A circular groove is formed in the damping shell, a circular through hole is formed in the side portion of the damping shell, the damping block slides in the circular groove, the diameter of the connecting shaft is smaller than that of the circular through hole, the connecting shaft slides in the circular through hole, the connecting shaft is arranged on the side wall of the damping block, a connecting block is arranged at the end of the connecting shaft, and the end of the connecting block is connected with the back of the bag body. Two first flexible belts are symmetrically arranged on the connecting shaft, the upper ends of the two first flexible belts are connected with the vertex angle positions of the frame respectively, and the two first flexible belts are of a V-shaped structure as a whole. The weight reduction feeling is obvious, and the bag is light in weight.

The utility model belongs to the technical field of constructional engineering, and particularly relates to an assembly type wall connecting piece which comprises a first clamping plate and a second clamping plate, the second clamping plate comprises a plurality of pressing plates which are buckled in sequence, threaded sleeves are embedded in the middles of the pressing plates, extrusion screws are connected to the middles of the threaded sleeves in a screwed mode, and limiting discs are arranged at one ends of the extrusion screws. A telescopic support frame penetrates through the middle parts of the plurality of groups of extrusion screw rods; a sliding groove is formed in the middle of one side of the first clamping plate, a limiting plate is embedded in the top of the sliding groove, and a guide groove matched with the extrusion screw is formed in the limiting plate. The first clamping plate and the second clamping plate can be driven to get close to each other by rotating the extrusion screw rod, so that a wallboard is clamped, the telescopic supporting frame can play a good supporting role, and the second clamping plate is arranged to be in a multi-block splicing mode, so that the purpose of block adjustment can be achieved, the positions of the wallboard with different thicknesses can be fully attached conveniently, and the use effect is good. And meanwhile, the device is convenient to disassemble and assemble, so that the transportation space is saved.

The application discloses a kind of bistable suction disc devices for enhancing the performance of microneedle and preparation method thereof, belong to medical instrument technical field, the bistable suction disc device structure includes elastic hemispherical shell, and the outer wall of elastic hemispherical shell is provided with convex column, and the axis of convex column and elastic hemispherical shell coincides, and the inner wall of elastic hemispherical shell is provided with microneedle patch mounting platform, and microneedle patch mounting platform is located just below the convex column, and the platform is combined with microneedle patch;Elastic hemispherical shell includes first stable state and second stable state, and first stable state is open downward state, and second stable state is open upward state, and it changes first stable state and second stable state when using, so that the negative pressure area between the inner wall of elastic hemispherical shell and skin, enhance the drug delivery efficiency of microneedle on microneedle patch and skin interstitial fluid collection amount.The bistable suction disc device has wide application prospect in the field of biomedicine.

The application provides a kind of based on multi-muscle deep cavity belt flat plate forming system, including transport device one and transport device two, preheating mechanism, auxiliary forming mechanism and punching equipment are arranged between transport device one and transport device two, the main role of auxiliary mould device in the operation process is that skin material can be quickly and fully adhered to the cavity in mould, so that pocket forming is more square, sufficient, and the strength of pocket forming for multi-muscle or multi-cavity structure is higher;It can effectively improve the forming effect and strength of multi-cavity and pocket deep belt product, so that the skin material will be pressed by the auxiliary mould during forming, and the pressure during blowing is more concentrated, which is beneficial to the blow molding of the softened skin material after heating.The stress of pocket bottom is uniform, the forming effect is good, and the strength of the formed pocket is high, and deformation is not easy to occur.

The invention discloses a coal mill pull rod internal and external sealing mechanism, which comprises a sealing box body, a pull rod is slidably connected in the sealing box body, an external sealing mechanism is arranged at the bottom of the sealing box body, and an internal sealing mechanism is arranged in the sealing box body, and relates to the technical field of coal mill pull rods. According to the internal and external sealing mechanism for the pull rod of the coal mill, the internal sealing mechanism is arranged, a sealing ring and a sealing ring are extruded through a sliding block, so that the sealing ring and the pull rod are attached more tightly, the sealing effect is improved, air or dust is prevented from entering a sealing box body, the phenomena of powder leakage and pull rod abrasion are reduced, and the production efficiency is improved; the outer sealing mechanism is arranged, the pull rod is wrapped by the sealing folding pipe, the sealing performance is kept, and the sealing gasket is arranged at the joint of the connecting flange and the bottom of the sealing box body, so that external air or dust is prevented from entering the sealing box body through the joint of the pull rod and the bottom of the sealing box body.

A coil connection device for an openable induction heating device is disclosed, relating to the structural design of the connection device and the connection method between the connection device and the coil. Commonly available traditional induction heating devices typically employ a fixed structure, which is difficult to adapt to workpieces of different shapes and sizes, resulting in uneven heating and affecting processing quality. Openable induction heating devices, through the design of an openable inductor structure, achieve flexible clamping and uniform heating of the workpiece. However, the rigid connection of openable induction heating devices often suffers from problems such as arcing, severe wear after repeated use, and high maintenance difficulty and complexity. To solve these problems, this invention provides a connection device. This device increases the contact surface of the coil by L-shaped welding of a copper plate and a coil, and by assembling a graphite sheet between the copper plates, which is beneficial for the passage of large currents. Furthermore, the detachable graphite sheet not only ensures the passage of large currents but also significantly reduces the maintenance threshold and cost.

The application relates to the technical field of filtration, in particular to a graphene filter film and a preparation method thereof. The graphene filter film comprises a first non-woven fabric layer, a graphene layer and a second non-woven fabric layer arranged in sequence, the layers are embedded with each other at connecting positions, and the weight percentage of the graphene in the graphene layer is greater than or equal to 90%. The graphene filter film provided by the scheme can increase the contact area of graphene with the outside world, so that the adsorption and filtration effects of graphene can be better exerted.

The invention relates to the technical field of medical care devices, in particular to a face physiotherapy device for neurological sclerosis patients, which comprises a headrest and a mask, hot compress pads are symmetrically mounted on the mask, cavities are formed in the two hot compress pads, a plurality of suction holes are formed in the surfaces of the hot compress pads, and the suction holes are communicated with the headrest. A plurality of suction holes are formed in the surface of the mask, sealing suction cups are fixedly installed in the multiple suction holes, mounting holes are symmetrically formed in the surface of the mask, adapter pipes are fixedly installed in the two mounting holes, a plurality of connecting pipes are arranged in the cavity, suction pipes are fixedly installed on the two adapter pipes, and an air exhaust assembly is arranged on the headrest. According to the face physiotherapy device, through mutual cooperation of the air exhaust assembly, the suction pipe, the transfer pipe, the connecting pipe, the suction hole and the sealing suction cup, the hot compress pad is tightly adsorbed to the face, the hot compress pad on the face mask is fully attached to the collapsed portion of the face, it is guaranteed that the collapsed portion of the face is fully subjected to hot compress physiotherapy, and the treatment effect of the face physiotherapy device is improved.

The utility model relates to the technical field of rubber sheet production, in particular to rubber sheet and cloth pressing equipment. According to the technical scheme, the device comprises a fixing frame and pressing rollers, the two pressing rollers are rotationally installed on one side of the outer surface of the fixing frame from top to bottom, and two upper flattening rollers and two lower flattening rollers are rotationally installed on the side, away from the pressing rollers, of the outer surface of the fixing frame and close to the upper surface and the lower surface from top to bottom correspondingly; and spiral lines are symmetrically arranged on the outer surfaces of the two upper flattening rollers and the two lower flattening rollers. The rubber sheet and the cloth can be flattened before being pressed, wrinkles on the rubber sheet and the cloth are eliminated, the rubber sheet and the cloth can be fully attached when being pressed, the binding force between the rubber sheet and the cloth is improved, the rubber sheet and the cloth are prevented from being separated, the service life is prolonged, and the production cost is reduced. And meanwhile, the flatness of the surface of the laminated sheet is improved, and the appearance quality is improved.

The utility model discloses a tray type laminated cutting board relates to cutting board technical field, include: tray, a plurality of threaded rods are fixed perpendicularly in the top surface edge of tray in annular array mode, thin cutting board is superposed in tray top, be equipped with the nut hole of corresponding threaded rod position on thin cutting board, the nut hole is blind hole and depth is greater than standard nut height, nut is screwed on threaded rod and is contained in nut hole completely, wherein, thin cutting board is detachably fixed on tray through the cooperation of nut and threaded rod, the utility model discloses thin cutting board wears, and the nut is loosened and can be replaced, embody the convenience, the rubber pad of counterweight base and thin cutting board contact surface, buffer reduces vibration and noise, enhances thin cutting board stability, makes two adhere fully, avoids rubbing damage.

This utility model relates to a tissue separation device for spermatic vein ligation surgery, belonging to the field of male infertility surgery and medical devices. The separation device includes an intermediate pad with a central groove for accommodating a movable soft coil; hooks are provided on the opposite end face of the intermediate pad opposite the groove. The hooks bend downwards on both sides, effectively fixing the external spermatic fascia and cremaster muscle, fully exposing the surgical area. The silicone soft coil can be inserted between the blood vessels (testicular artery, pampiniform plexus) and the cremaster muscle, fully exposing the vessels to be ligated. The tissue separation device for spermatic vein ligation surgery provided by this utility model uses a medical-grade silicone soft coil, which has good biocompatibility, allows for flexible intraoperative operation, and its softness avoids damage to blood vessels.

The invention belongs to the technical field of unmanned helicopters, and particularly relates to a self-adaptive full-autonomous electromagnetic adsorption type landing assisting device for a multi-rotor unmanned aerial vehicle. Comprising a main body supporting frame, a self-recovery sliding electromagnetic adsorption mechanism and a control box, wherein the self-recovery sliding electromagnetic adsorption mechanism and the control box are arranged on the main body supporting frame; the main body supporting frame is connected with a foot stool of the multi-rotor unmanned aerial vehicle through a connecting structure; when the multi-rotor unmanned aerial vehicle lands, the self-recovery sliding electromagnetic adsorption mechanism makes contact with the landing platform and then sends a trigger signal to the control box, the control box controls the self-recovery sliding electromagnetic adsorption mechanism to be magnetically attracted to the landing platform, and landing of the multi-rotor unmanned aerial vehicle is assisted. The landing triggering state can be more accurately judged through the mechanical triggering limiting switch, it is guaranteed that the multi-rotor unmanned aerial vehicle is stably, accurately and rapidly locked with the mother platform, and sideslip or rollover is prevented.

The invention discloses a positioning device for ophthalmology medicine applying and a positioning method of the positioning device, and belongs to the technical field of medical instruments. An eyedrop bottle is aligned to a pipe opening in the top of a medicine applying pipe, then the eyedrop bottle is pressed downwards, a pressing plate drives the medicine applying pipe to move downwards, the pressing plate can open two supporting strips, and the two supporting strips drive two transverse plates to be away from each other; the transverse plate pulls the vertical plate to move in the positioning cylinder, the vertical plate drives the traction strips to move through the fixing column, the two traction strips can be far away from each other, and due to the fact that the anti-slip strips at the bottoms of the traction strips make contact with the eyelids, the contact friction force is increased, and the two traction strips can open the upper eyelids and the lower eyelids of the patient. Meanwhile, the medicine applying tube drives the conical dripping nozzle to be close to the eyes of the patient, then the eyedrop bottle is squeezed to enable the eyedrop to be dripped into the eyes of the patient through the dripping nozzle, the whole medicine applying process does not need to open the eyelids with hands for medicine applying, operation is convenient and fast, and the situation that the hands are infected with germs and make contact with the eyelids, the germs are brought into the eyes, and cross infection is caused is prevented.

The utility model relates to electronic product assembly technical field discloses a kind of electrically-conductive parts mounting equipment, comprising: bearing, including insertion section and exposed section, insertion section is connected with exposed section and is equipped with via, bearing is equipped with cavity and bearing surface, bearing surface is at least partially located insertion section, for bearing electrically-conductive parts, via is through bearing surface, cavity is communicated with via and is through the surface of exposed section;Limit protrusion, be located at the outer circumferential surface of exposed section;Jacking part, insert in cavity, and from exposed section, jacking part has jacking protrusion, jacking protrusion is movably inserted in via.The electrically-conductive parts mounting equipment of the utility model has the advantages of simple operation, electrically-conductive parts is not easy to deviate, yield and production efficiency is high.

The invention discloses a digital remote transmission SF6 gas density meter, which relates to the field of gas monitoring technology, and includes a housing, an anti-leakage component, and a gas detection mechanism. The anti-leakage component includes an outer cylinder, an annular ring is installed at the bending surface of the bottom of the outer cylinder, a through hole is opened at the edge of the outer side of the annular ring, a supporting elastic ring is installed at the circumferential surface of the inner side of the annular ring, and a strip hole is opened in the middle of the inner side of the supporting elastic ring. The gas detection mechanism includes a pressure sensor and an inner cylinder, the pressure sensor is installed in the middle of the top of the inner cavity of the housing, the inner cylinder is fixedly installed in the middle of the outer cylinder, a piston is slidably installed in the middle of the inner cylinder, an elastic strip is fixedly installed between the top of the piston and the pressure end of the pressure sensor, and a supporting component is installed on the outer circumferential surface of the inner cylinder and near the supporting elastic ring. The digital remote transmission SF6 gas density meter achieves the effect of anti-leakage, can be sealed, is not easy to leak, is overall stable, and monitors safely and accurately.

The utility model discloses a prefabricated concrete steel bar truss structure which comprises a bottom plate and a plurality of steel bar truss bodies, the steel bar truss bodies are arranged on the bottom plate at equal intervals, and each steel bar truss body is composed of two lower chord steel bars, an upper chord steel bar, two web member steel bars and a plurality of connecting plates. A plurality of connecting bases are arranged on the periphery of the upper end of each bottom plate at equal intervals, and every two adjacent bottom plates are connected through a plurality of fixing assemblies connected with the corresponding connecting bases. The truss structure is reasonable in structural design, simple in structure and convenient to machine, has good strength and compression resistance, prevents the deformation phenomenon of the truss structure, can enable the two adjacent bottom plates to be fully attached, connected and assembled through the fixing assemblies, and avoids the deviation problem of the bottom plates.

The utility model relates to the technical field of vehicle workpiece machining, and discloses a chamfered workpiece auxiliary positioning device which comprises a base, a workpiece frame arranged at the top of the base and used for clamping a workpiece body, and a positioning assembly arranged at the bottom of the workpiece frame and used for positioning the top workpiece body. The positioning assembly comprises a support piece fixedly connected with the workpiece frame, an air cylinder arranged on the support piece, an output rod which is embedded in the air cylinder and extends out towards the side close to or away from the gear part, and a positioning piece which is arranged on the side, away from the air cylinder, of the output rod and abuts against the gear part. The air cylinder pushes the output rod to drive the positioning piece on the top to move in the direction close to the gear part, the top end of the positioning piece is embedded into a tooth groove of the gear part at will, positioning of a workpiece body is achieved, the smoothness of the tooth finding process is improved, and the top end of the positioning piece is made of nylon, so that in the process of making contact with the surface of the gear part, the tooth finding precision is improved. And the risk of crushing the tooth surface is avoided, and different tooth space gaps on the gear part can be adapted.

The invention relates to the technical field of plastics, in particular to an ultrathin micro-texture mobile phone rear cover plate and a preparation method thereof. The method comprises the following steps: carrying out end group regulation on polyhexamethylene adipamide resin through hexamethylene diamine, and carrying out melt blending on the polyhexamethylene adipamide resin, tetraethyl orthosilicate and hydroxyl-terminated polydimethylsiloxane through a sol-gel reaction to obtain hybrid inorganic powder; hydroxyl-terminated polydimethylsiloxane and hexamethylene diisocyanate are sequentially added by adopting a step-by-step feeding strategy for modification. And then molding in a mold with micro textures through an injection molding-compression molding process, and carrying out limited annealing treatment. According to the invention, the problems of incomplete micro-texture copying, easy scratching and poor thermal dimensional stability of the ultrathin plate are effectively solved, and high-precision texture transfer, excellent surface scratch resistance and long-term flatness of the plate with the thickness of 320-380 microns are realized.

The utility model relates to the technical field of energy storage equipment, in particular to a battery cell and a battery pack. The battery cell comprises a shell with an opening and a top cover assembly; the shell is provided with a containing cavity, the electrode assembly is arranged in the containing cavity, the top cover assembly is arranged at an opening of the shell and used for sealing the opening, the top cover assembly comprises a top cover piece, a lower insulating part and a connecting piece, the lower insulating part and the top cover piece are arranged on the side, close to the electrode assembly, of the top cover piece, and the lower insulating part is connected with the top cover piece through the connecting piece. The surface, away from the electrode assembly, of the lower insulating part is attached to the surface, close to the electrode assembly, of the top cover plate. The battery cell can ensure the reliability of connection between the top cover plate and the lower insulating part.

The invention provides a radial expansion mechanism tool capable of adjusting curing pressure and a using method. The using method comprises the following steps that S1, a conical section of a mandrel is sleeved with an isolation sleeve, a plurality of taper hole sliding blocks are installed between the mandrel and the isolation sleeve, and an isolation layer, a baffle and a fastening nut are sequentially installed on a threaded shaft of the mandrel; the fastening nut is adjusted to enable the taper hole sliding block to radially tension the isolation sleeve, and the outer diameter of the isolation sleeve is turned; s2, sleeving the outer ring of the knuckle bearing bonded with the gasket on an isolation sleeve; s3, a fastening nut is adjusted to enable the taper hole sliding block to expand the spacer sleeve in the radial direction, and the spacer sleeve expands the gasket to enable the gasket to be pressed on the inner side of the outer ring of the knuckle bearing; and S4, curing the outer ring of the joint bearing bonded with the liner. According to the device, the pressure can be effectively controlled when the joint bearing liner is cured, sufficient attachment and sufficient loading force are effectively guaranteed when the liner is cured, the bonding quality of the cured liner is improved, and the dimensional precision of a joint bearing part is improved.

The utility model relates to the technical field of municipal engineering, in particular to a leak-proof connecting ring of an urban gas transmission and distribution system, which comprises a connecting ring, an inert gas box body is arranged in an inner cavity of the connecting ring, a clamping and sealing mechanism is further arranged in an inner cavity of the inert gas box body, and sealing silica gel layers are arranged on two sides of the inert gas box body. A dehumidification box body is arranged on the side, away from the inert gas box body, of the sealing silica gel The connecting ring is sleeved on the periphery of the connecting position of the gas guide pipe, the dehumidification box body achieves moisture isolation of the outer edge of the connecting ring, the sealing silica gel layer is filled between the inner cavity of the connecting ring and the outer wall of the gas guide pipe, the sealing silica gel layer can be fully attached to the outer wall of the gas guide pipe, the gas flowing space is reduced, and the service life of the gas guide pipe is prolonged. The inert gas box body is arranged on the periphery of the splicing joint of the two fuel gas guide pipes and filled with inert gas, fuel gas can be effectively prevented from flowing out of the splicing joint, meanwhile, the clamping sealing mechanism is further arranged on the periphery of the splicing joint of the fuel gas guide pipes, double sealing is achieved, and the effect is obvious.

The invention belongs to the field of waste edge winding devices, and provides a waste edge winding device for a three-edge sealing bag making machine, the waste edge winding device comprises a workbench, the upper end face of the workbench is sequentially provided with a tensioning mechanism, a detecting mechanism, an adjusting mechanism and a winding mechanism, the tensioning mechanism is used for tensioning the two sides of a waste edge, and the detecting mechanism is used for detecting the two sides of the waste edge. The detecting mechanism is used for detecting the deflection degree of the two sides of the waste edge, the adjusting mechanism is used for correcting and resetting the horizontal deflection of the waste edge, and the winding mechanism is used for winding the waste edge. When the winding mechanism winds the slitter edge, the tensioning mechanism tensions the two sides of the slitter edge at the moment, then the slitter edge passes through the detection mechanism, the detection mechanism detects the deflection degree of the two sides of the slitter edge, and when the slitter edge deflects towards one side, the adjusting mechanism corrects the horizontal deflection of the slitter edge and resets the slitter edge. When the slitter edge passes through the air guide groove, the flattening mechanism can flatten the slitter edge, and wrinkles during rolling of the flattening mechanism are avoided.