5124results about How to "Improve connection strength" patented technology

The invention relates to the field of tower building machines, and discloses a structural curtain wall construction integrated aerial tower building machine for building an airport control tower, which comprises building equipment for building the control tower, the building equipment is erected outside the control tower, the control tower is fixed on the ground through a reinforced foundation, and the building equipment is fixed with the surface of the control tower through a wall attaching piece in the process of building the control tower. In order to greatly improve the construction efficiency, the structural curtain wall construction integrated aerial tower building machine for airport tower building ingeniously integrates multiple innovative designs, the core of the structural curtain wall construction integrated aerial tower building machine is a dynamically-adjusted lifting system, and the system is formed by connecting two lifting frame single bodies arranged up and down through a hydraulic air cylinder; the distance between the tower building machine and the tower crane can be flexibly adjusted so as to adapt to continuous change of the height of the control tower, the tower building machine can be synchronously lifted along with lifting of the control tower through the design, the tedious process of frequent disassembly and reinstallation in a traditional building mode is avoided, and the construction efficiency is remarkably improved.

The invention discloses a transparent material / metal dissimilar material ultrafast laser welding method based on a burst mode, and belongs to the technical field of laser micro-nano machining, and the transparent material / metal dissimilar material ultrafast laser welding method comprises the steps that the surface roughness and flatness of a pre-welded piece are treated through a mirror grinding and polishing technology, so that a sample piece reaches the optical contact condition, the pre-welded piece is in lap joint with a tool platform through a specially-made clamp, and the pre-welded piece is welded to the tool platform; when a visual Newton ring appears on a contact surface and an ultrafast laser focus is located at a material interface, using a burst mode under an ultrafast laser processing platform to increase the number of sub-pulses, welding a micro-area, equally dividing the energy of a single pulse into a plurality of pulses, and then emitting light in a pulse sequence mode, by using the burst mode containing multiple pulses, the heat accumulation effect can be achieved more easily, the ablation efficiency and the connection strength and stability of the transparent material and the metal heterogeneous material are improved while the machining rate is increased, and the method has wide application prospects.

The invention relates to the technical field of foundation pit supporting, and discloses a large deep foundation pit inner supporting system with a safety system.The large deep foundation pit inner supporting system comprises a telescopic rod, a supporting rod, a connecting plate and a soil retaining plate, one end of the telescopic rod is rotationally connected with a connecting block through a pin, the connecting block is movably provided with an elastic assembly, and the elastic assembly is connected with one side of the supporting rod; the elastic assembly reserves an elastic telescopic space between the supporting rod and the telescopic rod and is used for detecting displacement generated when the supporting rod and the soil retaining plate support the foundation pit, clamping grooves are formed in the two opposite sides of the soil retaining plate, and an assembling structure is arranged on one side of the supporting rod. According to the large-scale deep foundation pit inner supporting system with the safety system, prestress can be effectively applied to the side wall of the foundation pit, so that the periphery of the pit wall has certain supporting force, the deformation condition of the side wall of the foundation pit can be monitored, meanwhile, underground water seepage of a soil layer of the foundation pit can be eliminated in time, and the safety coefficient during foundation pit supporting is improved.

The invention belongs to the technical field of material preparation, and aims to solve the problems of interface separation and weak oxidation resistance under complex working conditions caused by insufficient interface bonding force of the existing carbon / carbon composite material. In order to achieve the purpose, the invention provides a carbon / carbon composite material and a preparation method thereof. The carbon / carbon composite material comprises the following components in percentage by mass: 40%-55% of polyacrylonitrile-based carbon fibers, 10%-25% of pitch-based carbon fibers, 8%-20% of nano silicon dioxide grafted carbon fibers, 8%-20% of biological pitch, 8%-15% of nano graphene modified phenolic resin, 3%-6% of silicon carbide whiskers, 2%-4% of zirconium boride nanoparticles, 2%-4% of graphitized carbon fibers and 1%-3% of a natural plant extract antioxidant. The carbon / carbon composite material provided by the invention can provide stable interface bonding force and remarkable oxidation resistance, so that the structural integrity and mechanical property stability of the material when bearing various complex stresses such as stretching, compression, bending, shearing and the like are guaranteed, and the application range of the material in the field of high-temperature oxidation resistance is widened.

The invention relates to the technical field of annealing furnaces, in particular to a swirl injection type energy-saving annealing furnace. The device comprises outer shell plates and an air duct, the outer shell plates are spliced to form a hearth, the air duct is arranged in the outer shell plates to form an air path for convective circulation, the air duct is connected with a circulating fan, and air in the air duct and an inner cavity of the hearth is driven by the circulating fan to actively convectively circulate. The air direction of air convection circulation of the air channel faces the side face and the lower portion of the workpiece needing annealing, and a heat preservation layer is attached to the inner surface of the outer shell plate. The shell plate is used for supporting a main body structure of the furnace body, the air duct is used for achieving circulation convection of air flow, the annealing efficiency and the annealing quality of the metal coiled materials are improved through circulation convection of high-temperature air flow, the heat preservation layer is used for storing internal heat, reducing energy leakage and effectively reducing loss, and the circulation fan is used for providing power for circulation convection of the air flow.

The invention belongs to the technical field of gel materials, and particularly relates to a high-performance water-swelling acrylic acid-based material and a preparation method thereof. Comprising the following steps: (1) modifying graphene by adopting a silane coupling agent containing unsaturated double bonds to prepare a modified graphene dispersion liquid; (2) sequentially adding acrylic acid, an acrylamide monomer and a cross-linking agent into the modified graphene dispersion liquid, then adding an initiator, and reacting to obtain a gel mixed solution; and (3) freeze-drying the gel mixed solution to obtain the high-performance water-swelling acrylic acid-based material. The gel material is uniform in pore structure and high in mechanical strength. Physical adsorption can be carried out by taking Van der Waals force or electrostatic attraction force as adsorption driving force through a pore structure, and chemical adsorption can also be carried out by taking chemical bond force or hydrogen bond interaction as adsorption driving force through functional groups on the graphene and the acrylic polymer, so that organic pollutants such as cationic dyes and the like can be effectively and quickly removed.

The invention relates to the technical field of wear-resistant composite materials, and particularly provides a modification method of ceramic particles, a ceramic-reinforced high-chromium iron-based composite material and a preparation method of the ceramic-reinforced high-chromium iron-based composite material, and the modification method comprises the following steps: carrying out decontamination, hydrofluoric acid coarsening, divalent tin sensitization, metal palladium activation, chemical Ni plating, ceramic micro powder coating and other treatments on SiC or ZTA and other ceramic particles; therefore, metallization modification can be rapidly achieved on the surfaces of the ceramic particles, decomposition of the ceramic particles is prevented, the connection strength between the ceramic particles and the metal-based material is effectively improved, and the ceramic reinforced high-chromium iron-based composite material with high hardness and high abrasion resistance is prepared. And technical support is provided for developing wear-resistant parts of mechanical equipment under harsh working conditions of metallurgy, mines, coal, building materials and the like.

The cable tie comprises a tie body and a buckle body, the tie body is provided with a tooth part and a tail part, and a plurality of first teeth are symmetrically arranged on the two sides of the tooth part; the belt penetrating hole is provided with second teeth and a supporting body; when the belt body penetrates through the belt penetrating hole, the first teeth and the second teeth are formed and kept in a connection state; the binding belt is also provided with a storage hole; the ribbon connecting part is provided with a connecting body or a connecting hole, and the ribbon is connected with a pipeline through the connecting body or the connecting hole; the pipeline comprises a wire, a cable, a rope, a rope, a gas conveying pipe or a liquid conveying pipe. The cable tie can be used for containing pipelines and can also be used for binding and fixing other objects, and the cable tie can be contained in a winding mode. The cable tie is connected with the pipeline and other objects or is arranged to be of an integrated structure, efficient storage and disassembly of the pipeline are facilitated, and use is convenient. According to the utility model, the pipelines can be conveniently and neatly bound and conveniently disassembled, rapid assembly, disassembly and use are realized, the pipelines are neatly, beautifully and firmly stored, and the use efficiency and the user experience can be improved.

The invention discloses a film cutting device for a rice transplanting and film covering all-in-one machine, which comprises a first support beam, a second support beam, a first mounting plate, a second mounting plate, a hydraulic oil cylinder, a knife rest and a cutter, and the first support beam and the second support beam are connected with each other; one end of the hydraulic oil cylinder is hinged to the upper end of the second support beam, and the other end of the hydraulic oil cylinder is hinged to the tool rest which is hinged to the lower end of the second support beam; the first mounting plate and the second mounting plate are detachably connected, the second mounting plate is fixed on the first bracket beam, and the first mounting plate is detachably mounted on the rice transplanting and film mulching all-in-one machine; the strength of the first mounting plate is smaller than that of the first support beam and the second support beam. The first mounting plate is arranged as a safety device, bending deformation of the first support beam and the second support beam is avoided, the first mounting plate is easy to replace, the whole film cutting device does not need to be replaced, and the maintenance cost is reduced.

The invention belongs to the technical field of welding, and discloses a dissimilar metal power modulation galvanometer laser welding method which comprises the following steps: finely cleaning a 6061 aluminum alloy and a 304 stainless steel plate by using acetone, and then airing for more than 20 minutes; the aluminum steel sheet is assembled, pressed and fixed on a welding test platform in a steel-up-aluminum-down mode; the position of the welding test platform is adjusted, argon serves as welding protection gas, and a protection gas nozzle is arranged to be aligned with a welding pool area; laser welding parameters are set, a laser power modulation mode is set to be a gradient power mode, and the gradient power mode is to regulate and control phase point laser power in a circular scanning track in the advancing direction of a welding seam; a welding test is carried out in the mode that a galvanometer laser head is fixed and a welding test platform is moved, and a laser and the welding test platform are synchronously started and stopped; and the protective gas is started 5 seconds before the laser is started, and after the laser is stopped, the protective gas is stopped lagging for 10 seconds so as to continuously protect the welding seam and prevent oxidation.

The invention relates to the technical field of batteries, and discloses a riveting top cover, a battery cell cover plate and a battery cell. Wherein the riveting top cover comprises a riveting block and a pole column, the riveting block is provided with a through hole, the through hole comprises a matching hole, a secondary riveting hole and a main riveting hole which are coaxially arranged in sequence, the pole column comprises a base and a protruding part arranged on the base, the protruding part is provided with a matching section, a secondary riveting section and a main riveting section which are in one-to-one correspondence with the matching hole, the secondary riveting hole and the main riveting hole, and the matching section, the secondary riveting section and the main riveting section are in one-to-one correspondence with the matching hole, the secondary riveting hole and the main riveting hole. The first annular cavity is reserved between the secondary riveting section and the secondary riveting hole in the pre-assembly state, the second annular cavity is reserved between the main riveting section and the main riveting hole, and the first annular cavity and the second annular cavity respectively reserve material expansion spaces for the secondary riveting section and the main riveting section. Therefore, part of the first annular cavity can be filled with the secondary riveting section after the secondary riveting section expands under the action force, the phenomenon that the riveting block is locally expanded or deformed due to expansion of the secondary riveting section in the traditional riveting process is avoided, and the yield of the riveted top cover is improved.

The invention relates to the technical field of printing, in particular to a printing process of an anti-puncture flame-retardant label, and the flame-retardant label comprises an anti-puncture base material layer, a flame-retardant layer, a printed pattern layer and an anti-puncture surface layer which are arranged in sequence; the base material layer and the surface layer are attached to the Dupont film through the composite technology, and the firmness and the using effect of the label are improved by means of the anti-puncture performance of the Dupont film. In the printing process, the treatment of the base material layer comprises stretching to ensure the surface flatness, the bonding layer and the adhesive film layer are accurately coated on the base material layer, and the flame-retardant layer is attached on the base material layer, so that the flatness and the structural strength of the base material are effectively improved, and meanwhile, the product is endowed with excellent flame-retardant property; the flame retardant performance and the structural strength are both improved, and a powerful guarantee is provided for product safety.

The invention provides an annular propeller of a cross-domain aircraft, the cross-domain aircraft and a use method of the cross-domain aircraft, and belongs to the field of cross-domain aircrafts, the connecting part, close to the downstream, of the connecting part of a propeller blade and a propeller hub is a heel part, and the part, from the blade tip to the heel part, of the propeller blade is a rear section; the rear section comprises a spiral section, a straight section and a movable section, one end of the spiral section extends to the blade tip, the other end of the spiral section extends towards the heel part, the straight section is arranged at the heel part and straightly extends by aligning to the free end of the spiral section, one end of the movable section is inserted into the straight section, and the other end of the movable section abuts against the free end of the spiral section; and the movable section moves towards the straight section and is separated from the spiral section. The rear root part of the annular propeller is provided with the movable section, the movable section can move and enter the straight section, the propeller blades are switched between the annular structure and the non-annular structure, the propelling direction of the propeller blades does not need to be changed according to the change of the navigation environment, and the annular propeller can also be applied to a cross-domain navigation unmanned aerial vehicle.

The invention relates to the field of new materials, and discloses an antifouling and antibacterial coating material as well as a preparation method and application thereof, and the antifouling and antibacterial coating material comprises glycidyl methacrylate, a methacrylate betaine monomer and a methacrylate quaternary ammonium salt monomer. Compared with a release type antifouling and antibacterial coating, the antifouling and antibacterial coating material adopts a bionic technology, uses sulphobetaine as a functional group, is good in biocompatibility, does not contain toxic or heavy metal antibacterial agents, can ensure that the material is non-toxic for a long time, realizes eco-friendly long-acting antifouling and antibacterial effects, can be combined with a large number of water molecules, and has the advantages of being environmentally friendly and free of pollution. The coating contains quaternary ammonium salt monomers, forms a hydration layer on the surface, keeps certain biological inertness, reduces protein adsorption, contains the quaternary ammonium salt monomers, has excellent inhibition and killing effects on various bacterial infections, overcomes the problem that the coating is easy to fall off, and realizes firm bonding of the surface of the pipeline.

The invention discloses a pipeline installation welding machining device, and relates to the field of pipeline welding installation, the pipeline installation welding machining device comprises a pipeline fixing assembly and a welding assembly, the pipeline fixing assembly comprises a fixing base and two second movable hoops, the welding assembly is installed in the middle of the pipeline fixing assembly, and the welding assembly comprises a lower supporting ring frame and an upper supporting ring frame; welding seats capable of rotating around the central inner walls of the lower supporting ring frame and the upper supporting ring frame are installed on the inner sides of the lower supporting ring frame and the upper supporting ring frame, and welding heads are installed on the welding seats. When two to-be-welded pipelines are welded, the stability of the to-be-welded pipelines can be guaranteed, the distance between the welding head and the to-be-welded pipelines can be always fixed during welding, the welding effect of all positions of the pipelines is consistent and stable, the connecting strength of the pipelines is improved, and meanwhile through the structural design of the welding assembly, the welding efficiency is improved. And the welding assembly is stable and smooth in the pipeline welding process, and operation is convenient.

The utility model discloses a magnetic aeration stirring device, which comprises a stirring disc circumferentially rotating around the axis of the stirring disc, the stirring disc comprises a paddle assembly and a magnetic rotor assembly, and the rotation of the stirring disc is realized through the magnetic coupling effect between the magnetic rotor assembly and an external driving assembly; the annular aeration disc is arranged on the outer side of the stirring disc in a surrounding mode, the annular aeration disc and the stirring disc are arranged in a split mode, and an air outlet part is arranged on the annular aeration disc; the connecting film is respectively fixed with the stirring disc and the annular aeration disc, so that the stirring disc is hermetically connected with the annular aeration disc through the connecting film. According to the technical scheme, the annular aeration disc and the stirring disc are separately arranged, so that the annular aeration disc and the stirring disc can be independently manufactured, the manufacturing cost is reduced, parts of various models can be conveniently assembled and matched, and the suitability is improved.

The invention relates to the field of household appliance equipment, and discloses a lifting mechanism, a floor brush assembly, cleaning equipment and a control method. The lifting mechanism is simple in structure, easy to install and set, small in occupied setting space, beneficial to miniaturization design of the whole machine and optimization of the product appearance, good in connection reliability of all parts, not prone to damage and long in service life. The lifting mechanism comprises a pneumatic part, an air inlet assembly, an exhaust assembly and a reset assembly, the pneumatic part is arranged in a shell, and the pneumatic part is connected with a first scraping strip; the air inlet assembly is arranged in the shell, the air inlet assembly can controllably inflate the pneumatic part, and the pneumatic part drives the first scraping strip to descend relative to the shell after being inflated; the exhaust assembly is arranged in the shell and can controllably exhaust the pneumatic part; the reset assembly is arranged on the shell, and the reset assembly drives the first scraping strip to be lifted relative to the shell after the pneumatic part exhausts air.

The invention relates to the technical field of cable manufacturing, and particularly discloses an aerial insulated cable and a production process thereof, the aerial insulated cable comprises a conductor, the outer surface of the conductor is fixedly coated with a shielding layer, the outer side of the shielding layer is fixedly coated with an insulating tube, and the outer side of the insulating tube is provided with an outer sheath. The outer surface of the insulating tube is wrapped and supported through the arc-shaped inner surfaces of the limiting tubes and the reinforcing strips, so that the insulating tube is fixed in the outer sheath, the situation that the overall structural stability of the cable is affected due to displacement of the insulating tube in the outer sheath is avoided, the inner surface of the outer sheath is supported through the supporting strips and the reinforcing strips, and the service life of the cable is prolonged. The overall structural strength of the outer sheath can be enhanced, the situation that the normal work of the cable is affected by permanent deformation of the outer sheath is avoided, meanwhile, gaps are formed among the limiting pipes, the supporting strips and the reinforcing strips, heat generated when the cable works can be dissipated, and the phenomenon that the outer sheath swells when the cable works normally is avoided.

The invention is suitable for the technical field of offshore photovoltaic power generation platforms, and provides a novel pipeline cross-shaped connecting structure which comprises cross-shaped hoops, the two cross-shaped hoops are clamped in a staggered mode and used for connecting a straight pipe and two disconnected pipes, each cross-shaped hoop comprises two locking hoops and a side plate, the two locking hoops of the same cross-shaped hoop are arranged in a crossed mode, and the two locking hoops of the same cross-shaped hoop are connected through the side plate. Side plates are arranged on the side walls of the locking hoops; each of the two lower-end double-stand-column pipe fittings comprises two stand column inserting pieces and a connecting part, and the connecting part is used for connecting the two stand column inserting pieces; and each pedal connecting piece comprises a horizontal supporting plate and a matching hoop, and the horizontal supporting plates are arranged above the matching hoops. Therefore, good connection strength can be guaranteed, effective support is provided for the photovoltaic panel, the service life of the device is prolonged, the stand column can be primarily positioned, the matching precision of the stand column and other structures is improved, and the installation efficiency is improved.

A plate edge banding machine comprises a machine box, a plate conveyor, a plate milling device, a plate pressing and pasting device and a plate post-processing device, the plate milling device is sequentially composed of a straight edge pre-milling mechanism, a rough milling mechanism, a finish milling mechanism and a chamfer milling mechanism, and the plate pressing and pasting device is sequentially composed of a baking lamp A, a glue spraying mechanism, a baking lamp B, a glue pot, a heating pneumatic hammer and a pressing and pasting wheel set. The glue spraying mechanism comprises a rack, a glue spraying machine head and an electromagnetic valve, the glue spraying machine head is connected with the glue pot, and the plate post-processing device is sequentially composed of a sideband cutting mechanism, a flushing mechanism, a rough trimming mechanism, a fine trimming mechanism, a cleaning mechanism and a polishing wheel set. According to the utility model, roller coating is replaced by spraying, so that a linear surface, an arc-shaped surface and a special-shaped groove surface are completely glued, the pressing and pasting quality of the edge sealing of the plate is guaranteed, and the connection tightness between the edge sealing plate and the inner wall of the mounting notch is improved, thereby enhancing the connection strength between the edge sealing plate and the plate to be processed.

The invention relates to the technical field of reactor thermal hydraulics and safety, in particular to a long electric heating plate heat insulation structure and a heat transfer simulation experiment device with the long electric heating plate heat insulation structure. The long electric heating plate heat insulation structure comprises a heat insulation base, a heating plate and a cementing layer. The heat insulation base is configured to be a ceramic resin plate, and a sinking groove is formed in one plate face of the heat insulation base. The heated plate is arranged in the sinking groove so that the plate face of the heated plate can be flush with the plate face of the heat insulation base, and the surface, corresponding to the groove wall and the groove bottom of the sinking groove, of the heated plate is provided with a micropore aluminum oxide ceramic layer which is subjected to nanocrystallization treatment through an active coupling agent. And the cementing layer is arranged between the heated plate and the heat insulation base in a high-temperature vacuum pressure environment. According to the heat transfer simulation experiment device, it can be ensured that the heated plate has good single-side heat dissipation performance under the temperature working condition that the surface of the dispersion type fuel element is blistered, the experiment safety during operation of the heat transfer simulation experiment device can be ensured, and the accuracy of a measurement result in a simulation experiment can be ensured.

The invention relates to a super wear-resistant fracturing hose assembly and a preparation method thereof. The super wear-resistant fracturing hose assembly comprises a hose and a joint, the hose comprises a hose body super-wear-resistant layer, an inner rubber layer and a steel wire framework layer. The connector comprises a super-wear-resistant inner core body formed by compounding a metal inner core body and a core body super-wear-resistant layer, a first sleeve arranged on the outer side of the super-wear-resistant inner core body in a sleeving mode, and a second sleeve arranged on the outer side of the first sleeve in a sleeving mode. The inner side of the second sleeve is connected with the outer side of the first sleeve in a buckling and pressing mode, the inner side of the first sleeve is connected with the outer side of the steel wire framework layer in a buckling and pressing mode, and the inner side of the steel wire framework layer is connected with the super-abrasion-resistant inner core body in a buckling and pressing mode on the anti-pulling-off section of the super-abrasion-resistant inner core body and connected with the inner rubber layer in a sealing mode on the sealing section of the super-abrasion-resistant inner core body. The inner rubber layer is in sealing connection with the super-wear-resistant inner core body at the sealing section of the super-wear-resistant inner core body; the core body super-wear-resistant layer and the pipe body super-wear-resistant layer are in high-temperature welding connection through a welding rod; the wear resistance of the hose connector part can be improved.

The embodiment of the invention relates to the photovoltaic field, and provides a photovoltaic cell and a preparation method thereof, and a photovoltaic module, and the preparation method comprises the steps: providing a substrate comprising a first surface and a second surface; forming a hydrophobic layer covering the second surface; forming an aluminum oxide lamination layer on the first surface by adopting at least two atomic layer deposition process steps; the step of forming the aluminum oxide lamination comprises the following steps: placing a substrate covered with a hydrophobic layer in a reaction chamber, and introducing water vapor and trimethylaluminum into the reaction chamber in any circular deposition step, preset process parameters of any circulation deposition step in the (N + 1) th atomic layer deposition process are controlled to be lower than preset process parameters of any circulation deposition step in the Nth atomic layer deposition process, and the preset process parameters comprise at least one of water vapor flow, trimethylaluminum flow, water vapor introduction duration and trimethylaluminum introduction duration. The embodiment of the invention is at least beneficial to avoiding back surface winding plating and improving the film layer quality of the aluminum oxide laminated layer.

The invention relates to the technical field of on-orbit assembly, in particular to a space structure on-orbit assembly auxiliary device which comprises a plurality of first connecting rods, a plurality of second connecting rods are hinged to one ends of the first connecting rods, and opening and closing assemblies used for unfolding the second connecting rods are arranged on the second connecting rods; the opening and closing assembly comprises a plurality of first hinge rods and third hinge rods, and each second hinge rod is provided with a sliding groove. A first sliding block and a second sliding block are arranged in each sliding groove in a sliding mode. Every two adjacent first sliding blocks are rotationally connected through a first hinge rod. Every two adjacent second sliding blocks are connected through a third hinge rod. And the first sliding block close to the side of the first connecting rod is rotationally connected with the first connecting rod through a first hinge rod. The second connecting rod located at the top end is provided with a rotating assembly used for providing rotating force. Through the automatic and intelligent control of the rotating motor, the dependence on manual operation is reduced, and the labor cost and the risk caused by the manual operation are reduced.

The utility model provides a submarine cable connection box. The submarine cable connection box provided by the utility model comprises a connection box body, reinforcing assemblies and a sealing assembly, the reinforcing assemblies are arranged on two opposite sides of the connection box body, and each reinforcing assembly comprises a fixed seat, a first connection sleeve and a second connection sleeve; the fixing seat is fixedly connected to one side of the connection box body, the first connecting sleeve is connected to the fixing seat, the fixing seat is provided with a first mounting hole, the first connecting sleeve is provided with a second mounting hole, the first mounting hole is communicated with the interior of the connection box body, and the first mounting hole is communicated with the second mounting hole. The first mounting hole and the second mounting hole form a channel for a cable core of a submarine cable to penetrate into the connection box body. The first connecting sleeve is sleeved with the second connecting sleeve, one end of the second connecting sleeve is connected to the fixing base, and a gap with the adjustable width is formed between the first connecting sleeve and the second connecting sleeve. The utility model provides a submarine cable connection box which can prevent continuous discharge of induced current and protect an optical unit.

The utility model discloses an umbrella-shaped electrical protective sleeve, and particularly relates to the field of electrical protective sleeves, the umbrella-shaped electrical protective sleeve comprises two protective clamping plates, the two ends of the protective clamping plates are symmetrically and fixedly connected with limiting ring plates, the two sides of the two ends of the protective clamping plates are symmetrically and fixedly connected with fastening screw plates, and the middle parts of the fastening screw plates are provided with clamping grooves; a clamping column is arranged in the middle of the fastening screw plate, and the two ends of the clamping column are symmetrically and fixedly connected with anti-skid clamping plates. According to the utility model, the protective clamping plates are clamped to clamp and protect the connection part of an electrical element or a cable, and the telescopic pipe is telescopically moved by pulling the annular plate, so that the protection length can be adjusted, and adjustment and use can be conveniently carried out according to needs; the connecting position of the telescopic pipe and the protective clamping plate is heated and wrapped through the thermoplastic umbrella cover, the connecting protective effect of the telescopic pipe and the protective clamping plate is improved, the connecting strength of the telescopic pipe and the protective clamping plate is improved through the connecting ring, the use effect is improved, and adjustment, installation and use are convenient.

The invention provides a transformer vibration test tool and a use method, the transformer vibration test tool comprises a vibration platform, the vibration platform is provided with an installation platform, the installation platform is symmetrically provided with two support frames, the ends of the same sides of the tops of the two support frames are connected with a connecting plate, the connecting plate is connected with a connecting piece, and the connecting piece is connected with the vibration platform. The top of a transformer is connected to the connecting piece, the transformer is located between the two supporting frames, one end of a flexible connecting piece is connected to the bottom of the transformer, and the other end of the flexible connecting piece is connected to the tops of the supporting frames. According to the test tool, accurate test and evaluation of the transformer in a simulated vibration environment are realized, and the accuracy and reliability of the transformer in a vibration test are ensured, so that the operation and maintenance cost and risk of the transformer are reduced.

The invention relates to an aluminum alloy cable connector, and belongs to the technical field of cable installation. The aluminum alloy cable connector comprises a crimping pipe, two insulating threaded pipes and two threaded sleeves, the two insulating threaded pipes are fixedly connected to the two ends of the crimping pipe respectively, and the two threaded sleeves are in threaded connection to the opposite ends of the two insulating threaded pipes respectively; the sealing device is arranged on the surface of the crimping pipe in a sleeving manner; a user only needs to rotate the threaded sleeve to perform internal and external sealing operation at the same time, and in the process, the first internal sealing mechanism not only can perform double sealing on a gap between the aluminum alloy cable and the insulating threaded pipe, but also can firmly bond the aluminum alloy cable and the insulating threaded pipe together, so that the sealing effect is good. Therefore, the aluminum alloy cable protection layer and the insulation threaded pipe are connected more tightly, and the overall connection strength of the connector is improved.

The invention discloses a sole manufacturing method which comprises the following steps: S1, pouring a high-density polyurethane solution into a forming mold, and cooling to form a wear-resistant layer; s2, the cooled wear-resistant layer is put into a foaming mold, then low-density polyurethane forming a foaming layer is poured into the wear-resistant layer, and foaming layer melt completely covers one face of the wear-resistant layer; and S3, covering an upper mold cover of the foaming mold, then heating the wear-resistant layer and the foaming layer at the same time, so that the foaming layer and one surface of the wear-resistant layer are fully fused, and manufacturing of the shoe sole is completed after the foaming layer and one surface of the wear-resistant layer are cooled. On the basis, the wear-resistant layer and the foaming layer are both made of polyurethane, so that the wear-resistant layer and the foaming layer are consistent in melting point and molecular structure, the wear-resistant layer and the foaming layer can be better fused into an integrated structure, the connection strength of the wear-resistant layer and the foaming layer is improved, and the degumming phenomenon is reduced.

The invention discloses a basement outer wall post-cast strip structure and a construction method, and relates to the technical field of constructional engineering.The basement outer wall post-cast strip structure comprises a post-cast strip body arranged on a building outer wall and two pre-embedded steel plates laid on the side wall of the post-cast strip body, and the two pre-embedded steel plates are arranged on the two sides of the post-cast strip body respectively; a rubber waterstop is arranged at the joint position of the two embedded steel plates, and the rubber waterstop is fixedly connected with the embedded steel plates on the two sides respectively. On the premise of meeting the basic functions of the post-cast strip main body, the anti-seepage performance of the post-cast strip main body part is enhanced, the water seepage risk is effectively reduced, the service life of a building is prolonged, and the safety of the building is improved.