969results about How to "Close contact" patented technology

The invention discloses a direct-current flame-retardant tensile cable for a charging pile, and relates to the technical field of cables, the direct-current flame-retardant tensile cable comprises a conductor, the outer side of the conductor is wrapped with an insulating layer, the outer side of the insulating layer is wrapped with a shielding layer, the outer side of the shielding layer is provided with a protective layer, the direct-current flame-retardant tensile cable further comprises a flame-retardant assembly and a tensile assembly, and the flame-retardant assembly comprises a plurality of fixing pieces; a fire extinguishing chamber is formed by every two adjacent partition pieces, the fixing piece, the protective layer and the shielding layer, and the tensile assembly comprises a plurality of tensile pieces. Through arrangement of the flame-retardant pieces, when a fire breaks out in the fire extinguishing chamber, a fire breakout point can be covered to form a sealed space, and therefore the good flame-retardant effect is achieved; and through cooperation of the tensile member, the flame-retardant member, the telescopic air bag and inert gas in the fire extinguishing chamber, the tensile capability of the tensile member can be enhanced, so that the problem of poor flame-retardant and tensile capability of the existing charging pile cable is effectively solved.

The invention relates to the technical field of plastic mold drilling, in particular to plastic mold numerical control precision drilling equipment and a using method thereof.The plastic mold numerical control precision drilling equipment comprises a base, a fixed table is movably installed at the top of the base, a rack is fixedly connected to the top of the base, a movable table is installed on the rack, and a pushing plate is slidably connected to the bottom of the movable table; a collecting assembly and a drilling assembly are arranged on the pushing plate; according to the device, firstly, the area around a drilling point can be comprehensively shielded through the collecting assembly, the same contact surface can be autonomously formed according to the uneven surface of the plastic mold, and the waste intercepting effect is further enhanced; and the drilling assembly is matched, during drilling, instant smashing of filiform plastic waste is achieved, efficient collection and treatment of the waste are achieved, air is blown into the material blocking and collecting barrel, on one hand, negative-pressure material suction is assisted, the waste collecting effect is improved, and on the other hand, synchronous cleaning treatment is achieved when the drill bit rotates and ascends.

The invention provides a high-reliability single-component bottom filling adhesive, a preparation method thereof and a flip chip. The bottom filling adhesive comprises the following components in percentage by mass: 50%-60% of spherical silicon dioxide, 28%-32% of epoxy resin, 13%-17% of a modified polyether amine curing agent, 0.1%-0.2% of carbon black, 0.3%-0.5% of a silane coupling agent and 0.2%-0.4% of an adhesion promoter. The epoxy resin is composed of bisphenol A epoxy resin and first epoxy resin, and the model of the first epoxy resin is NANOPOXE500 or NANOPOXE470. The thermal expansion coefficient and the storage modulus of the underfill adhesive are controlled by adjusting the proportion of the first epoxy resin, the bisphenol A epoxy resin and the modified polyether amine curing agent, so that the underfill adhesive is still in close contact with a chip in a high-low temperature environment for a long time, and the reliability of chip packaging is improved.

The invention relates to the technical field of part detection, in particular to a pressure gauge sealing performance detection device. The technical problems are as follows: leakage possibly exists at the joint of the pressure gauge and the air pressure pipe, the sealing detection of the pressure gauge body is influenced, the detection is not accurate enough, the existing sealing detection device is inconvenient to simulate the actual situation, the detection is not sufficient enough, the detection result of the pressure gauge is difficult to have effectiveness, and the detection efficiency is poor. Therefore, the detection effect is not good. A pressure gauge sealing performance detection device comprises a base, the bottom of the periphery of which is fixedly connected with support legs; the water tank is mounted on the base, and glass plates are mounted on two sides of the water tank. A worker can observe the interior of the water tank through the glass plate to know specific leakage points of the pressure gauge, so that the sealing performance of the pressure gauge is accurately detected, the performance of the sealing performance of the pressure gauge under uncertain air pressure is simulated, the sealing performance of the pressure gauge can be fully detected, and the detection effect is remarkably enhanced.

The invention discloses a preparation method of a high-temperature excitation coil based on an AMB process, and relates to the technical field of magnetic levitation, and the preparation method specifically comprises the following steps: S1, silicon nitride ceramic is perforated; s2, through hole filling and surface screen printing; s3, carrying out vacuum sintering on the metal foil and the silicon nitride ceramic; s4, performing coil patterning and surface treatment; s5, preparing a single-layer silicon nitride ceramic metal coil; s6, preparing a ceramic isolation sheet; s7, performing lamination and vacuum sintering; the magnet exciting coil prepared by the invention has relatively good reliability and long service life in a service environment of 550-600 DEG C.

The invention discloses a medical infusion pipeline pressure detection device which comprises a shell, symmetrical moving grooves are formed in an inner cavity of the shell, positioning mechanisms used for clamping and positioning an infusion pipeline are arranged in inner cavities of the moving grooves, symmetrical movable grooves are formed in the outer portion of the shell, inner cavities of the movable grooves are movably connected with push rods, and the push rods are movably connected with the movable grooves. A cavity is formed in the side wall of one side of the shell, a driving mechanism used for driving the positioning mechanism and the push rod to move is arranged in an inner cavity of the cavity, and when the driving mechanism rotates, the positioning mechanism horizontally moves towards the center position of the shell. The driving groove is driven to rotate anticlockwise through clamping fit of the driving block and the driving groove, the effect of driving the symmetrical clamping plates to clamp an infusion pipeline is achieved, the infusion pipelines of various sizes can be clamped and positioned, the infusion pipelines are stretched through the symmetrical stretching plates, the bending degree of the infusion pipelines is reduced as much as possible, and the production efficiency is improved. And the contact surface between the outer wall and the pressure sensor is wider.

The invention provides a wire pressing auxiliary device and method for a transformer winding machine, and relates to the technical field of winding machines, comprising a winding machine body and a rotating shaft, wherein a rotating shaft is rotatably provided at the lower part of one side of the winding machine body, and a winding piece is connected to one side of the rotating shaft, a sliding rod is slidably provided at the upper part of one side of the winding machine body, and a shaft plate is provided on one side of the upper and lower ends of the sliding rod; the invention drives the winding piece to rotate by the rotating shaft to wind the copper wire, and presses the clamping arm by pressing the elastic piece so that the two groups of clamping arms rotate inwardly and are clamped on the outer side of the winding piece, so that the wire pressing roller presses the winding part of the copper wire for regular winding, and presses and regularizes from two points, and before that, the copper wire passes between two groups of cleaning rollers and then between two groups of clamping rollers, and the T-shaped square column is pushed by the first spring to move the mounting plate inward, and the two groups of cleaning rollers and two groups of clamping rollers clamp the copper wire for cleaning and regularization, thereby improving the quality of the copper wire and having diversified functions.

The utility model discloses a motor flat wire clamping and forming device which comprises a convex surface mold and a concave surface mold which are oppositely arranged, an air cylinder for driving the concave surface mold to move relative to the convex surface mold, a first lifting mechanism for driving the convex surface mold to do lifting motion, a bending module and a second lifting mechanism for driving the bending module to do lifting motion, each of the convex surface mold and the concave surface mold comprises a bending forming area and a bending forming area; the bending forming area comprises vertical grooves formed in the two ends of the convex face mold and allowing the bending modules to vertically pass through, and bending grooves formed in the two ends of the concave face mold and allowing the two ends of the flat wire to be bent and formed. The bending forming area comprises a first forming face, a second forming face, a third forming face and a fourth forming face which are used for bending the first side face, the second side face, the third side face and the fourth side face of the flat wire respectively. By means of the structural design of the scheme, the copper wire can be formed into the flat wire in the needed shape on the same device at a time.

The invention discloses an ultrahigh-voltage submarine cable flexible joint insulation recovery method, which comprises the following steps: S1, placement: placing a cable to be processed in a working environment; s2, checking to ensure that the surface of the to-be-processed cable is smooth and clean; s3, mold filling: putting the cable to be processed into an injection mold, installing a cold contraction pipe, and adjusting the position; s4, the cable to be processed in the mold is heated and kept; s5, starting an external plastic extruding machine; s6, the pressure of the mold is kept, discharging is stopped, and the extruder is removed; s7, the injection mold is heated and kept, and cooling is conducted in stages; s8, the injection mold and the cooling pipe are dismantled; according to the recovery method, the steps are simple, only one-time mold installation and extrusion process is needed, the workpiece does not need to be vulcanized after heating is stopped and cooling is completed, and the recovery method can effectively save the preparation process, shorten the process time, improve the production efficiency and be beneficial to guaranteeing the on-time delivery rate of a factory.

The invention discloses a plasticizer esterification reaction device which comprises a reaction cylinder, a stirring assembly and a sealing assembly, the stirring assembly is arranged on the reaction tank and is used for stirring materials in the reaction tank; the reaction cylinder comprises a cylinder body and a cylinder cover, the cylinder cover is detachably mounted at the upper end of the cylinder body through bolts, and a material cavity for accommodating materials is formed in the cylinder body; the sealing assembly is arranged at the joint of the barrel body and the barrel cover and used for sealing the joint of the barrel body and the barrel cover, the sealing assembly comprises a sealing piece and an extrusion piece, and the extrusion piece is movably arranged on the sealing piece. The sealing assembly is arranged, the sealing assembly comprises the sealing piece and the extrusion piece, and the extrusion piece is movably arranged on the sealing piece; and the extrusion piece moves relative to the sealing piece under the action of the pressure difference and extrudes the sealing piece, so that the two sides of the sealing piece are in tighter contact with the barrel body and the barrel cover, and the sealing effect is improved.

The invention discloses a vertical open type isolating switch, which comprises a static contact seat, a static contact, a static contact, a static contact and a static contact, and is characterized in that the static contact seat is provided with an open slot; a tool arm base; the tool arm driving shaft is movably mounted on the tool arm base; the tool arm moving seat is hinged to the tool arm base; the conductive tool arm is mounted on the tool arm moving seat and can rotate along with the tool arm moving seat until the conductive tool arm is clamped into the open slot, a radial bulge structure is arranged on the peripheral wall of the conductive tool arm, and the conductive tool arm can rotate along the axis of the conductive tool arm relative to the tool arm moving seat; and the transmission mechanism is used for connecting the tool arm driving shaft with the conductive tool arm in a transmission manner, and can enable the radial bulge structure on the conductive tool arm to tension the open slot after the conductive tool arm is clamped into the open slot. When the conductive cutter arm starts to enter the open slot, the radial bulge structure does not tension the two opposite side walls of the open slot, so that the resistance is not large when the conductive cutter arm enters and exits the open slot, and after the conductive cutter arm is clamped into the open slot, the radial bulge structure continues to rotate and is gradually opened to tension the two opposite side walls of the open slot, so that the conductive cutter arm is in tight contact, and sufficient contact force is ensured.

The invention relates to a low-temperature disinfection gel and a low-temperature disinfection method.The low-temperature disinfection gel is prepared from, by volume, 70-80% of a solution A, 10-15% of a solution B and 10-15% of a solution C. The solution A is an aqueous solution of polyvinyl alcohol, and the solution C is an aqueous solution of polyvinyl alcohol. The solution B is a solution formed by dissolving betaine in a 3-(cyclohexyl) aminopropanesulfonic acid aqueous solution and then hydrolyzing, and the solution C is an aqueous solution of hexadecyl trimethyl ammonium chloride. When the low-temperature disinfection gel is matched with a disinfectant for disinfection, lasting and efficient sterilization and antibacterial effects can be achieved, and the low-temperature disinfection gel has an extremely good application prospect in the field of cold-chain food disinfection.

The utility model discloses a shoe anti-rollover performance test device, comprising a simulation foot device which comprises a simulation leg model and a simulation foot model, the simulation leg model simulates knee joint motions when a leg treads and lifts up, and the simulation foot model wears a shoe to simulate ankle joint motions when the foot stands or laterally stretches and lifts up; the ground-like device is provided with a treading platform mechanism and a lifting mechanism, the treading platform mechanism is provided with a test platform, and the test platform is provided with a treading plane for simulating the simulation foot mold and bears treading force generated when the simulation foot mold performs lateral pedaling and stretching actions; the lifting mechanism controls the treading platform mechanism to move in the vertical direction so that the sole of the simulation foot mold can make close contact with the testing platform. And a control and data acquisition module. The utility model provides an anti-rollover performance test device for shoes, which can simulate landing angles, impact forces and action time between different legs and feet and the ground, and evaluate the overall anti-rollover performance difference of the shoes under different exercise intensities.

The invention discloses a method for regenerating a lithium iron phosphate positive electrode material by wet grinding, a positive electrode plate and a battery, and relates to the technical field of battery materials, the method comprises the following steps: pre-treating a waste lithium iron phosphate material to obtain a pre-treated lithium iron phosphate positive electrode plate; immersing the pretreated lithium iron phosphate positive plate in a deionized liquid to obtain stripped lithium iron phosphate; preparing a lithium supplementing solution, immersing the stripped lithium iron phosphate into the lithium supplementing solution to obtain a lithium supplementing mixed solution, and grinding the lithium supplementing mixed solution for a first preset time to obtain a reacted mixture; and separating a solid in the reacted mixture, and drying the solid to obtain the regenerated lithium iron phosphate material. According to the present invention, the positive electrode material of the waste lithium iron phosphate battery can be refined and homogenized, the reaction activity of the material is improved, and the lithium salt is configured in the grinding liquid phase so as to supplement the defective lithium element in the retired lithium iron phosphate, such that the electrochemical performance of the prepared regenerated lithium iron phosphate is improved.

The utility model discloses an automatic drilling and monitoring device of a coal mine drilling machine, which relates to the technical field of coal mine drilling and comprises a base, a machine body and drilling equipment, a round cylinder is arranged on a shell of the drilling equipment, a round hole is arranged on the inner bottom surface of the round cylinder, and a methane detector body is arranged in the round cylinder. Control equipment matched with the methane detector body is arranged on the front end surface of a shell of the machine body, and an alarm is mounted on the top surface of the shell of the machine body; through cooperative use of the methane detector body, the control equipment and the alarm, methane at the punching position can be conveniently detected, the phenomenon of explosion caused by too high methane content is avoided, and the safety of coal mining is improved.

The invention belongs to the field of tea production, and particularly relates to a conveying device for tea production and a conveying method thereof.The conveying device comprises a conveyor, a conveying box is arranged at the top of the conveyor, two supporting plates are symmetrically and fixedly connected to the bottom of the conveying box, and two guide plates are symmetrically and fixedly connected to the top of the conveying box; according to the conveying device for tea production and the conveying method of the conveying device, hot air is discharged from a plurality of first air outlets through the arranged first flow guide plate, the hot air makes better contact with tea leaves while the tea leaves are stirred through the stirring plate, the hot air is discharged from a plurality of second air outlets through the arranged second flow guide plate, and the tea leaves are better in contact with the tea leaves. Through wrapping of the gas gathering plate and the stirring plate, hot gas is prevented from floating upwards too fast, the contact time of the hot gas and the tea leaves is longer, when the stirred tea leaves slide to the included angle between the gas gathering plate and the stirring plate, the double faces of the tea leaves can be dried at the same time, and the drying effect is higher and more uniform.

The invention relates to the technical field of welding, and discloses a press fusion welding joint movement fitting base device which comprises a first welding joint and a second welding joint, the first welding joint and the second welding joint are oppositely arranged, and a first protection device is arranged on the first welding joint; the first protection device comprises a top plate and a plurality of first protection plates arranged around the top plate, the top plate is suitable for penetrating through the first welding head, and the first protection plates form a first protection cavity; the first protection plate is rotationally connected to the top plate, the end, away from the top plate, of the first protection plate is obliquely arranged in the direction away from the first protection cavity, the first protection plate is connected with a first elastic piece, and the first elastic piece has damping force for damping deflection of the first protection plate in the direction away from the first protection cavity. By means of the first protection device on the first welding head, spark splashing and explosion points are protected during workpiece welding, and personal injury to workers caused by splashed sparks can be avoided.

The invention discloses a folding driving device which comprises a driving mechanism, a gear assembly, a transmission assembly and a rotating seat used for being fixedly connected with a mirror base. The transmission assembly and the gear assembly are coaxially arranged and can be in transmission connection with the gear assembly; the gear assembly is in transmission connection with the output end of the driving mechanism; the transmission assembly and the rotating seat are coaxially arranged and are always connected in a relatively static manner; a limiting groove is formed in the side, facing the rotating base, of the base. An elastic piece and a limiting assembly used for limiting the limiting groove are arranged on the side, facing the base, of the rotating base, and the elastic piece can enable a gap to be generated between the rotating base and the base. When the base is limited and the gear assembly continuously rotates in the limited direction, the gear assembly presses against the transmission assembly in the axial direction, so that the rotating seat is attached to the base. In the invention, the transmission resistance between the base and the rotating seat can be reduced in the folding process of the rearview mirror, and meanwhile, the entering of wind and sand can be avoided and the generation of wind noise can be reduced after the rearview mirror is folded or unfolded in place.

The invention belongs to the technical field of VOC gas detection, and particularly relates to a VOC detector which comprises a bottom shell, the upper side of the bottom shell is fixedly connected with a detector body, the outer wall of the bottom shell is provided with a connecting port, the connecting port is detachably connected with a pipeline head, a filter screen is detachably connected in the bottom shell, and the pipeline head is detachably connected with the filter screen. And a protection mechanism and an auxiliary shake-off assembly are arranged in the connecting port. According to the VOC detector, through the use of the protection mechanism, after the pipeline head is connected with the connecting port, the pipeline head extrudes the protection ring, after the pipeline head is fixed, the ejector rod can eject the protection cover to be opened, so that subsequent gas can enter the detector body for detection, and when the detector body is not used, the pipeline head is separated from the connecting port, so that the pipeline head is separated from the connecting port; under the action of the reset spring, the protection ring is reset, and meanwhile, the protection cover on the protection ring rotates and resets under the action of the torsion spring, so that the accuracy of subsequent detection of the device is ensured.

The embodiment of the specification provides a spectrum test lens clamp, comprising: a substrate on which a test lens is placed, the substrate being provided with a chute; the positioning part is used for positioning the test lens, the positioning part comprises a positioning block, and the positioning block can slide relative to the substrate; the clamping part is used for clamping and fixing the test lens, the clamping part comprises a fixing piece, an elastic piece and a clamping piece, the fixing piece is fixedly installed on the substrate, the first end of the elastic piece is connected with the fixing piece, the second end of the elastic piece is connected with the clamping piece, and the clamping piece slides in the sliding groove. The test lens is positioned through the positioning part, the lens is clamped and fixed through the clamping piece, the clamping and fixing effect on the test lens is guaranteed, and during testing, under the condition that it is guaranteed that the substrate is perpendicular to test light, only the test lens needs to be tightly attached to the substrate, and therefore the lens within a certain size range and with a certain thickness can be precisely measured.

The utility model belongs to the field of pipeline joints, and particularly relates to a socket type sealing flange connection joint which comprises a hollow socket joint body, and an annular groove used for fixing a hoop is formed in the end of a continuous fiber reinforced thermoplastic pipeline through the mold pressing cooling forming technology. An annular rubber part is arranged on the inner wall of the hollow bell and spigot joint body, one end of the continuous fiber reinforced thermoplastic pipeline is inserted into the hollow bell and spigot joint body, and the end face of the continuous fiber reinforced thermoplastic pipeline makes contact with the annular rubber part. The hollow socket-and-spigot joint body is connected with the end of the continuous fiber reinforced thermoplastic pipeline through the flange and is fixed by the hoop, so that the continuous fiber reinforced thermoplastic pipeline is prevented from sliding down from the hollow socket-and-spigot joint body; the elastic rubber pad is arranged to enable the end face of the pipeline to be in tight contact with the interior of the hollow socket joint body, the problem that the pipeline needs to be sealed before being installed and used is solved, the whole installation procedure is simple, and permeation of transportation media can be effectively avoided.

The invention discloses a flexible three-dimensional MOF (Metal Organic Framework) array SERS (Surface Enhanced Raman Scattering) substrate and a preparation method thereof. The flexible three-dimensional MOF array SERS substrate comprises a flexible substrate, a three-dimensional MOF periodic array layer and a gold nanoparticle film which are sequentially arranged from bottom to top. The three-dimensional ordered MOF periodic array structure on the substrate can provide more attachment points for the gold nanoparticles, and high-density hot spots are formed; meanwhile, the MOF material has the advantages of high porosity, large specific surface area, adjustable aperture and the like, and can adsorb and capture a target analyte, so that to-be-detected molecules are concentrated and enriched in a hot spot region, and finally, the SERS activity is improved. The SERS substrate is a flexible substrate and can be directly attached to the surface of a complex to-be-detected object, and in-situ detection is achieved. The method has the characteristics of high sensitivity, good repeatability and wide applicability, and provides important support for rapid detection in food safety and environment monitoring.

The utility model discloses a convenient-to-assemble water tank for an oral irrigator, relates to the technical field of water tanks, and aims to solve the problem that the conventional water tank is troublesome to assemble and disassemble, and adopts the technical scheme that the convenient-to-assemble water tank comprises a water tank and an oral irrigator, two connecting rods I are symmetrically fixed at the upper part of the water tank, and limiting blocks are fixed at the upper parts of the connecting rods I; two first notches are symmetrically formed in the peripheral side of the oral irrigator, second notches are formed in the two sides of the bottom of the oral irrigator, the limiting blocks are arranged in the second notches in a sliding fit mode, limiting rods are arranged in the first notches in a sliding fit mode, and fixing blocks are fixed to one ends of the limiting rods. The limiting block is aligned with the second notch to be inserted into and extrude the fixing block, the limiting block and the fixing block are connected in a clamped mode, the water tank can be rapidly installed, meanwhile, the water tank can be disassembled only by pressing the two limiting rods at the same time, water can be conveniently added into the water tank, meanwhile, the water tank can be conveniently installed, operation is easy, and practicability is high. Four cushion blocks are arranged at the bottom of the water tank, so that the device is more stable during placement.

The utility model discloses an axis displacement monitoring device, which belongs to the technical field of wind turbine generator monitoring and comprises a fan rotating shaft, a main shaft bearing is connected to the outer wall of the fan rotating shaft, a bearing seat is mounted outside the main shaft bearing, a mounting plate is inserted into the bearing seat, and insertion plates are connected to two sides of the bottom of the mounting plate. The two sides of the bottoms of the inserting plates on the two sides are connected with sliding blocks, the bottom of each sliding block is connected with an extending plate, a rotating shaft is rotationally connected between the two extending plates at the bottom of each inserting plate, and the outer wall of the extending plate on one side is connected with a torque sensor connected with the rotating shaft. The arranged rotating shaft rotates when the axis of the fan rotating shaft moves so as to drive the torque sensor to rotate, the torque value generated by rotation of the torque sensor is transmitted to the console for alarming, then the equipment is shut down, and the rotating shaft can make close contact with the outer wall of the fan rotating shaft through the spring when the mounting plate is assembled.

The utility model discloses a building waterproof coiled material paver, which belongs to the technical field of building waterproof construction equipment, and comprises a support plate, a rotating rod, a fixed rod and a connecting rod, the top of the support plate is fixedly connected with two vertical plates, and the side surface of the support plate is movably connected with a first limiting wheel through a pin shaft; the bottom of the supporting plate is movably connected with two movable rods and two first electric push rods through pin shafts, and a second limiting wheel is movably connected between the two movable rods through a pin shaft. The waterproof coiled material laying device has the beneficial effects that by arranging a second electric push rod, when the waterproof coiled material is laid, people control the second electric push rod to operate through an external controller, push a connecting rod and a U-shaped frame to move downwards, enable an extrusion wheel to make contact with the waterproof coiled material and extrude the waterproof coiled material, and the waterproof coiled material can be laid before the fused surface of the waterproof coiled material is solidified and attached; and gas remained on the pasting surface is discharged, so that cavitation bubbles can be avoided.

The invention relates to the technical field of on-machine measurement control, and discloses a V-shaped groove guide rail on-machine machining measurement system and method. The control end of the measuring body is connected to the driving end of a machine tool through a controller, and the measuring end of the measuring body and a grinding wheel of the machine tool are placed in a V-shaped groove of a guide rail to be measured in parallel. The measuring body comprises a sensor and two groups of contraction measuring rod assemblies; the two groups of contraction measuring rod assemblies are correspondingly arranged at the two ends of the sensor respectively and are connected to the control end of the controller through the sensor; and the measuring ends are measuring balls arranged at the end parts of the two groups of telescopic measuring rod assemblies. According to the invention, through integration of measurement and processing functions, real-time measurement can be carried out without interruption of the processing process, so that the overall efficiency of measurement and processing is significantly improved. By means of the mode of measuring and machining at the same time, the conversion time between measuring and machining in a traditional method is shortened, and the production process is accelerated.

The utility model relates to a net hanging device for concrete spraying, and relates to the technical field of building construction, the net hanging device for concrete spraying comprises a steel bar net piece and a connecting piece, the connecting piece is used for being fixed to a structure to be subjected to concrete spraying, and the steel bar net piece is hung on the connecting piece; the connecting structure further comprises a pressing piece, and the pressing piece is pressed on the reinforcing mesh and fixedly connected with the connecting piece. Through the design of the connecting pieces and the pressing pieces, the reinforcing mesh is fixed to the structure, the concrete rebound phenomenon can be effectively reduced, and the construction quality and efficiency in the concrete spraying process are ensured; due to the design of the pressing piece, the reinforcing mesh can be evenly and stably pressed on a structure, the reinforcing mesh is prevented from tilting or bending in the spraying process, and therefore the stability and durability of the mesh hanging device are guaranteed; the construction process is simple and clear, operation is convenient and fast, the net hanging device can be rapidly used, the construction period is shortened, the site guidance difficulty is reduced, and economic benefits are improved while the construction quality is guaranteed.

The invention relates to the technical field of electric power pipe connection, and discloses a high-voltage electric power pipe connecting device which comprises a supporting seat, auxiliary clamping parts are arranged on the two sides of the top of the supporting seat, a column body is arranged on the side, close to the center, of the top of the supporting seat, a supporting table is arranged on one side of the top of the column body, and sleeves are arranged on the two sides of the top of the supporting table. An inclined frame is arranged at the center of the top of the sleeve, a second inserting cylinder is arranged at the top of the inclined frame, a fixing ring is arranged on the left side of the second inserting cylinder, a plurality of sliding grooves are formed in the side edge, located on one side of the second inserting cylinder, of the fixing ring, matched sliding plates are arranged in the sliding grooves, and the sliding plates penetrate through the side end of the second inserting cylinder; a side rack is arranged at the center of the side, away from the sliding groove, of the sliding plate, and a fifth gear meshed with the side rack is arranged on one side of the side rack. The beneficial effects are that in the butt joint process, the weight of the rear end of the electric power tube does not influence the end portion, the butt joint precision is improved, and thus gaps generated between the electric power tubes are reduced.

The invention discloses an active high-protection socket, which comprises a socket upper shell and a socket lower shell, a socket assembly is arranged between the socket upper shell and the socket lower shell, the socket upper shell is provided with jacks corresponding to the socket assembly, and the interior of the socket assembly is respectively provided with an independent protection door assembly corresponding to each metal insertion sheet on a plug. According to the active high-protection socket, the protection door sliding block which moves up and down is adopted, the protection door sliding block adopts a PC + silica gel double-material injection molding process, silica gel elasticity is utilized to automatically seal jacks, a metal insertion sheet is in contact with a snap spring below the protection door sliding block after being inserted, and the protection door sliding block moves upwards and wraps the metal insertion sheet according to the lever principle; and then the conductive sheet moves downwards along with the metal insertion sheet to trigger the conductive sheet on the lower side to be conducted and electrified. According to the waterproof socket disclosed by the invention, the socket can be plugged in water without electric leakage through a plurality of plugging sealing junctions and an independently arranged protection door assembly, so that the waterproof socket is suitable for various complex living environments.

The invention discloses a rapid cooling post-welding reinforcing device for V-method casting, which comprises a base, a support plate, a sand mold bearing assembly, a forming assembly and a vibrator, the support plate is mounted at the top end of the base, the vibrator is mounted on the outer surface of the sand mold bearing assembly, the sand mold bearing assembly comprises a sand box mounted at the top end of the support plate, and the sand box is filled with fine sand; the device comprises a sand box, fine sand is arranged in the sand box, a plurality of reinforcing plates are uniformly placed in the fine sand in the sand box, a plurality of blanking holes are formed in the outer surfaces of the reinforcing plates, the reinforcing plates are laminated, and a connecting rope is mounted between every two reinforcing plates. The reinforcing plates are arranged in the sand box, so that the reinforcing plates can fill the sand layer in a layered manner, the sand layer can be effectively supported and fixed, and the sand layer is prevented from being deformed or collapsed due to impact and pressure of molten metal in the pouring process.