39results about How to "Guaranteed contact effect" patented technology

The invention discloses a solar cell and a preparation method and application thereof, and relates to the technical field of solar cells. P-type doped regions and N-type doped regions are alternately arranged on the back surface of the crystalline silicon substrate, a boron diffusion doped layer, a first passivation layer and a first antireflection layer are sequentially arranged in the P-type doped regions, and a phosphorus-doped silicon oxide layer, a phosphorus-doped polycrystalline silicon layer, a second passivation layer and a second antireflection layer are sequentially arranged in the N-type doped regions from the surface of the crystalline silicon substrate. A traditional TBC battery P region mostly adopts a two-step process of intrinsic amorphous silicon deposition and boron diffusion to form a polycrystalline silicon layer, but the P region does not contain the polycrystalline silicon layer and can be prepared through a one-step boron diffusion process, so that the process steps can be reduced, and the process time can be shortened; and the action of laser and P-region polycrystalline silicon is avoided, the patterning difficulty of the battery is reduced, and the production yield of the battery can be greatly improved.

The invention relates to a solar cell, a laminated cell and a photovoltaic module, and the solar cell comprises a substrate, a first surface of the substrate comprises a first region and a second region, the first region comprises a first sub-region, a tunneling layer is disposed on the first region, and a doped conductive layer is disposed on the side, away from the substrate, of the tunneling layer. The first passivation layer is arranged on the side, away from the tunneling layer, of the doped conductive layer and on the second area, the first anti-reflection layer is arranged on the side, away from the substrate, of the first passivation layer, the first fine grids are arranged on the first sub-areas in a one-to-one correspondence mode, and at least part of structures of the first fine grids penetrate through the first anti-reflection layer and the first passivation layer. The distance L1 between the first fine grid and the edge of the first sub-region corresponding to the first fine grid in the first direction meets the condition that L1 is larger than or equal to 50 micrometers and smaller than or equal to 800 micrometers, and therefore light parasitic absorption of the doped conductive layer can be reduced, meanwhile, the performance of carrier transverse transmission is guaranteed, and the photoelectric conversion efficiency of the solar cell is improved.

The invention relates to the technical field of shipbuilding, and discloses a marine methanol fuel storage tank with a liquid sloshing inhibiting function, which comprises a support frame, a fuel storage tank body is arranged at the top of the support frame, an observation window is arranged at the top of the fuel storage tank body, and a discharge port is formed in one side of the fuel storage tank body. A climbing ladder is arranged on one side of the fuel storage tank body, an arch-shaped plate is arranged at the bottom of the inner wall of the fuel storage tank body and is of an arch-shaped structure, multiple sets of circulation holes are formed in the surface of the arch-shaped plate, and a buffering assembly is arranged at the top of the arch-shaped plate. A hedging assembly is arranged on the inner wall of the fuel storage tank body. The buffer assembly is used for reducing the oscillation degree of liquid in the fuel storage tank body; the hedging assembly is used for counteracting the shaking amplitude of liquid in the fuel storage tank body. Compared with the prior art, the shaking strength of part of methanol liquid can be actively counteracted, and the collision strength of the methanol liquid to the inner wall of the fuel storage tank body is effectively reduced.

The utility model relates to the technical field of roller engraving machine accessories, in particular to an end supporting device for engraving of a roller engraving machine, which comprises a base, a connecting pipe, a supporting knob, an adjusting device and a limiting device, the connecting pipe is fixedly arranged on the upper surface of the base, the supporting knob is arranged outside the connecting pipe, and the adjusting device is arranged on the connecting pipe. The adjusting device is arranged on the inner side of the top of the connecting pipe in a clamped mode, the limiting device is arranged on the outer side of the top of the adjusting device, and the adjusting device comprises a telescopic rod, a clamping strip, a supporting ring, a mounting base, a supporting rod and a supporting wheel. The bottom of the clamped knurling roller is effectively supported, so that the pressure on the three-jaw chuck is reduced, the knurling roller is prevented from falling to affect the machining quality, the supporting height of the supporting device can be adjusted according to the diameter of a roller body, the opening angle of the supporting wheel is adjusted according to the diameter of the roller body, and the contact effect and the supporting effect are guaranteed.

The invention discloses a wellhead rapid oil scraping protection device, which is applied to the technical field of oil well equipment, and is characterized in that an elastic scraping ring and an elastic folding edge are arranged in a rubber core main body, so that the elastic scraping ring can be attached to the surface of an oil pipe, and adhered crude oil can be scraped off when the oil pipe passes through the elastic scraping ring in the extraction process; the anti-pollution function is achieved, through the elastic design of the elastic scraping ring and the elastic folded edge, the tubing coupling can conveniently pass through, meanwhile, the contact performance of the tubing coupling and the elastic scraping ring can be guaranteed, the annular protrusion is arranged in a matched mode, and the sealing performance of the annulus between the tubing and the wellhead can be guaranteed; by means of the hydraulic compensation mode, the abutting strength of the rubber core body to the oil pipe can be adjusted, the rubber core body can be assisted in righting work of the oil pipe, the situation that the righting capacity of the oil pipe is lost due to performance reduction of the rubber core is avoided, and then the stability of the oil pipe in the extraction process is guaranteed.

The invention belongs to the technical field of construction platforms, and particularly relates to a green building intelligent construction platform which comprises a moving seat and a working platform, the working platform is connected with the moving seat through a scissor type telescopic frame, protective fences are fixed to the edges of the four sides of the top face of the working platform, and a mounting cavity communicating with the outside is formed in the working platform. An adsorption assembly is arranged in the mounting cavity; the adsorption assembly comprises a suction cup and a first air pump, the suction cup is arranged in the mounting cavity and connected with the inner wall of the mounting cavity through an electric push rod, the first air pump is fixed to the inner wall of the mounting cavity, and the air suction end of the first air pump fixedly communicates with the suction cup through a hose; according to the invention, by inflating the air bag, the air bag can more flexibly adapt to the irregular shape of the surface of the ceramic tile, the extrusion force of the contact surface of the air bag and the wall surface is more uniform, and the inflated air bag can better fill the unevenness of the pattern surface of the ceramic tile, so that more comprehensive contact and sealing are realized, and the contact effect is improved.

The invention discloses an intelligent online material corrosion performance testing device and a using method, and belongs to the technical field of material corrosion performance testing, the intelligent online material corrosion performance testing device comprises a base, a reaction tank located at the top of the base, a cover plate covering the top of the reaction tank and a cylinder for controlling the cover plate to lift. Through a material fixing mechanism composed of an upper pressing disc, a hanging rod, an upper limiting groove, a collecting groove, a lower pressing disc, a lower limiting groove and an outer threaded sleeve, multiple sets of materials can be subjected to filling testing at the same time in the testing process, random errors are reduced, overall characteristics of the materials can be obtained easily, and the testing efficiency is improved. In addition, an ultrasonic probe is arranged at the top of the material fixing mechanism and located above the material fixing position, and meanwhile, a rotating mechanism composed of a motor, a first shaft rod, a main gear, a driven gear and a second shaft rod is utilized, so that the ultrasonic probe can be continuously controlled to rotate around the axis of the material in the testing process; and the average corrosion condition of the single surface of the material is continuously tested, so that the tested structure is more accurate.

The application discloses an environmental protection gas load switch and belongs to the electrical equipment field, which is used to solve the problem of how to inhibit or eliminate the arc generated when the static contact and the moving contact of the load switch are disconnected. The environmental protection gas load switch comprises a shell, a moving contact, an operating mechanism, a first static contact and an arc extinguishing device. The moving contact is rotatably arranged in the interior of the shell, the operating mechanism is used for controlling the rotation of the moving contact, and the first static contact is fixedly arranged in the interior of the shell. The arc extinguishing device comprises a shell body, a rotating arm, a vacuum bubble and a reset spring, the shell body is fixedly arranged on the shell, the rotating arm is rotatably arranged on the shell body and is provided with an electrically conductive part, the electrically conductive part is arranged on the rotating path of the moving contact, the vacuum bubble is arranged on the shell body, and the two ends of the vacuum bubble are electrically connected with the electrically conductive part and the first static contact respectively, and the reset spring is arranged between the rotating arm and the shell body. When the moving contact is disconnected with the first static contact, the moving contact is electrically connected with the electrically conductive part.

A device for recycling gallium from a sodium aluminate solution comprises a vertically-extending filling cylinder, a first four-way valve, a second four-way valve, a neutralizing tank, a precipitation tank and a dissolving tank, the filling cylinder is filled with a plurality of chelating resin particles, a first connector of the first four-way valve is connected to a base and communicated with the filling cylinder, a first connector of the second four-way valve is connected to a top cover, and a second connector of the second four-way valve is connected to a bottom cover and communicated with the top cover. A fourth connector of the second four-way valve supplies materials to the neutralizing tank through a first pipeline, a first liquid inlet is formed in the top of the neutralizing tank and used for being connected with an alkali liquor source, the neutralizing tank supplies materials to the precipitation tank through a second pipeline, and a second liquid inlet is formed in the top of the precipitation tank and used for being connected with an alkali liquor source. The precipitation tank supplies materials to the dissolving tank through a third pipeline, and a third liquid inlet is formed in the top of the dissolving tank and used for being connected with an alkali liquor source. The device is simple in structure and convenient to operate, the gallium element can be recycled at low cost by utilizing a Bayer process matching device, and the utilization value of bauxite is effectively improved.

The utility model relates to the technical field of cooling-water machines, and provides a cooling-water machine heat treatment device which is good in heat conduction effect and easy to use and clean and comprises a machine body and a compression refrigerating machine which is arranged on the machine body and communicated with the interior of the machine body, and an exhaust pipe communicated with the interior of the machine body is arranged on the machine body. The machine body comprises a heat dissipation shell and a water passing pipe penetrating through the heat dissipation shell, the outer wall of the water passing pipe is fixedly connected with the inner wall of the heat dissipation shell, the compression refrigerating machine is arranged on the heat dissipation shell and communicates with the interior of the heat dissipation shell, and the exhaust pipe is arranged on the heat dissipation shell and communicates with the interior of the heat dissipation shell; a plurality of cooling pipe sets are arranged on the water passing pipe in a penetrating mode, a pull-down magnet frame connected with the inner wall of the heat dissipation shell in a sliding mode is arranged on the cooling pipe sets, and a magnetic push-pull block is arranged on the outer wall, corresponding to the wall making contact with the pull-down magnet frame, of the heat dissipation shell in a sliding mode.

The invention belongs to the technical field of APM vehicles, and particularly discloses an APM vehicle current collection device which comprises a support, a connecting arm is fixedly mounted at the top of the support, a current collection sliding plate is mounted at the top of the connecting arm through a mounting frame, the current collection sliding plate is fixed through a mounting mechanism, the mounting mechanism comprises a baffle, and rotating shafts are fixedly arranged at the two ends of the baffle. A first bevel gear is fixedly arranged at one end of one rotating shaft and is in transmission connection with a rotating rod through a transmission assembly, a rotating disc is fixedly arranged at the top of the rotating rod, a third gear is fixedly arranged in the middle of the outer side wall of the rotating rod, and the rotating rod is fixed through a locking assembly. According to the invention, through the transmission of the rotating disc in the mounting mechanism to the third gear, the automatic opening and closing of the baffle plate and the limiting of the current-receiving sliding plate can be realized, so that the rapid mounting and dismounting of the current-receiving sliding plate are realized, the labor intensity of workers when the current-receiving sliding plate is frequently replaced is reduced, and the replacement efficiency of the current-receiving sliding plate is improved.

The utility model discloses a welding wire drawing lubricant powder coating material box which comprises a first cavity, a second cavity and a third cavity, through holes for welding wires to penetrate through are formed in the two side edges of a box body in the length direction, a first partition plate and a second partition plate, the first cavity is used for storing lubricant powder, a rotating device is arranged in the second cavity, and the third cavity is used for storing the lubricant powder. On the basis of the same inventive concept, the utility model further provides a welding wire drawing device which comprises a machine table and a drawing unit and has the beneficial effects that the rotating ring can drive bottom lubricating powder to ascend through a material groove and then pour the lubricating powder on a welding wire, and the welding wire can be drawn through the drawing unit; therefore, the contact effect can be guaranteed, and the lubricating effect is improved. The inclined bottom of the material box can concentrate the lubricating powder to one end of the rotating ring, so that the stacking height is increased; one end of the die head is provided with the extrusion hole, so that excessive lubricating powder can be discharged from the extrusion hole when the pressure is too large, coking is prevented, and the quality of the lubricating powder is ensured.

The utility model discloses a non-intrusive pressure sensor adaptive to hoses of different sizes, which belongs to the technical field of non-intrusive pressure sensors and comprises a lower mounting ring, positioning bolts are symmetrically arranged in the lower mounting ring, an upper mounting ring is arranged at the upper end of the lower mounting ring, a hose groove is arranged in the upper mounting ring, and the hose groove and the positioning bolts are arranged in the hose groove. Notches are symmetrically formed in the two ends of the hose groove, a to-be-tested hose is arranged in the hose groove, a hose containing assembly is arranged on one side of the inner wall of the hose groove, a sensor mounting groove is formed in the upper end of the middle of the hose groove, and a positioning mounting assembly is arranged on one side of the sensor mounting groove. A non-intrusive pressure sensor body is arranged in the sensor mounting groove; according to the utility model, through the arrangement of the hose placing assembly, to-be-tested hoses with different calibers can be conveniently and stably placed and positioned, the to-be-tested hoses are prevented from shaking and loosening during use, and the use stability of the equipment is ensured.

The invention provides a power module, a motor controller of a vehicle and the vehicle. The power module comprises a power module and a detection mounting piece, the power module comprises a base body and a power chip installed on one side of the base body, and the detection installation part is connected to the side, provided with the power chip, of the base body. One side, facing the power chip, of the detection installation part is provided with a temperature detection part, and at least the part, corresponding to the temperature detection part, of the detection installation part has elasticity, so that the temperature detection part can elastically abut against the power chip to detect the temperature of the corresponding power chip, and the temperature detection precision can be improved.

The present invention discloses a device and method for extracting plant essence for cosmetics, and belongs to the field of plant essence extraction. A device for extracting plant essence for cosmetics includes an extraction tank, and also includes: a distillation plate fixed at the lower part of the inner wall of the extraction tank, on which a distillation part for providing steam to the inside of the extraction tank is arranged; wherein a cutting shaft is rotatably connected to the top of the inner cavity of the extraction tank; the present invention drives the cutting blade to rotate in the cutting barrel through the cutting shaft to achieve crushing and cutting of plant raw materials, which is convenient for the essence liquid inside to flow out and for subsequent comprehensive and thorough extraction; and the cutting shaft also drives the scraping plate to rotate, so that the reciprocating screw rod and the sliding block and stirring brush that reciprocate thereon turn over the plant raw materials accumulated on the surface of the distillation plate, so that it can be more comprehensively contacted with high-temperature water vapor, effectively improving the distillation effect, and realizing the extraction of essence liquid efficiently and comprehensively.

The present invention proposes a shock absorber, wherein a damping friction cylinder is coaxially inserted into a lower support cylinder, a second flange is provided on the outer wall of the bottom end of the damping friction cylinder, the damping friction cylinder is installed through the upper cover, the second flange is located below the first flange and blocks each other; the damping friction cylinder is open at the bottom end and sealed at the top end, and a compressor spring is provided in the damping friction cylinder, one end of the compressor spring is connected to the bottom plate, and the other end is connected to the inner top end surface of the damping friction cylinder; a damping pressure ring and a damping washer are provided in the cavity enclosed by the outer wall of the damping friction cylinder, the inner wall of the lower support cylinder, the top end surface of the first flange and the bottom end surface of the upper support cylinder, and the damping pressure ring and the damping washer are coaxially sleeved on the outer wall of the damping friction cylinder. The shock absorber enhances the shock absorption effect by designing the existing damping washer in the lower support cylinder and installing it through a specific structure, and the damage problem caused by hard contact of components in the prior art will not occur when the shock absorber is tilted.

A substrate placing tool for a stripping liquid test comprises an upper batten, a plurality of rectangular windows are formed in the upper batten in the length direction of the upper batten, a lower plate is fixed to the lower wall of the upper batten through screws, a plurality of grooves are formed in the upper wall of the lower plate, the grooves and the rectangular windows are in one-to-one correspondence, and the grooves are located under the corresponding rectangular windows. A plurality of rubber rings of rectangular structures are arranged on the lower wall of the upper batten, and the rubber rings and the rectangular windows are in one-to-one correspondence. According to the utility model, the upper batten and the rectangular window play a role in blocking the stripping liquid dripping on the substrate, so that the stripping liquid is prevented from dripping. A rubber ring is arranged in order to ensure that no gap exists after the upper wall of the base plate is in contact with the upper batten, and the contact effect between the base plate and the rubber ring is ensured by pushing the base plate upwards.

This disclosure provides a semiconductor device and a method for forming the same, relating to the field of semiconductor technology. The method includes: providing a substrate; forming a metal layer on the substrate, the metal layer including a plurality of spaced conductive portions; sequentially forming an insulating layer and a mask layer on the metal layer, the mask layer including a plurality of mask patterns, the orthographic projection of the mask patterns on the substrate covering the orthographic projection of the conductive portions on the substrate; etching the insulating layer through the mask layer to form trenches exposing the conductive portions; and removing the mask layer using an oxygen-free stripping gas. The semiconductor device formation method provided by this disclosure, by etching the insulating layer through the mask layer to form trenches exposing the conductive portions, and by using an oxygen-free stripping gas to remove the mask layer, avoids oxidation of the metal layer caused by the stripping gas during mask layer removal, thereby solving the problem of poor connection due to oxidation of metal wires.

The utility model provides cold-rolled ribbed steel bar rust-proof treatment equipment, and relates to the technical field of steel bar rust prevention, the inner wall of a soaking box is provided with a driving assembly used for controlling steel bars to fall, the middle of the driving assembly is provided with a fixing assembly used for fixing the steel bars, and one side of the bottom of the soaking box is provided with a set of stand columns; supporting assemblies used for supporting steel bars are fixedly installed on the upper sides of the stand columns. The horizontal movement of the sliding seat is realized by starting the driving motor, and the reinforcing steel bars are limited by the fixing assembly and the supporting assembly, so that the vertical reinforcing steel bars swing to be inclined, the reinforcing steel bars can enter the soaking box and are in full contact with an anti-rust agent, batch treatment of a plurality of reinforcing steel bars is realized, and the service life of the reinforcing steel bars is prolonged. Compared with the prior art that the reinforcing steel bars are stored one by one for soaking, the contact effect of the reinforcing steel bars and the antirust agent can be ensured while batch treatment is conducted, and the situation that the reinforcing steel bars make insufficient contact with the antirust agent due to stacking of the multiple reinforcing steel bars is avoided.

The utility model discloses a stacker drum disordered rope detecting and limiting device, which comprises a stacker main body and a limiting detection structure, the limiting detection structure is fixedly arranged on the stacker main body, the limiting detection structure comprises an installation bottom plate and an installation seat, a compression spring is arranged between the installation bottom plate and the installation seat, and the compression spring is connected with the stacker main body. The number of the compression springs is two, the two ends of each compression spring are fixedly connected with the mounting bottom plate and the mounting base correspondingly, a pressing rod is arranged on one side of the mounting base, a limiting switch is arranged above the mounting bottom plate, the limiting switch is connected with the mounting bottom plate through a screw, and the limiting switch is arranged on one side of the mounting base; the limiting switch is in contact with the inclined surface of the mounting seat, so that the device can be used for limiting a disordered rope and detecting an alarm device, and can play a role in limiting when the disordered rope amplitude is small; when the rope disorder force is large, in order to avoid damage to the steel wire rope and the winding drum, the device restrains the limiting function and starts the rope disorder detection function to give an alarm.

The invention discloses an extraction and stirring device for the production of ganoderma lucidum substitute tea, which belongs to the technical field of substitute tea production, and comprises a base and a stirring tank vertically mounted on the top of the base. The invention is provided with a bracket mounted on the outer side of a stirring shaft, and a kneading mechanism consisting of a swing arm, a strip groove, a lever, a rotating disk and an arc plate is arranged on the bracket, and a feeding assembly consisting of a rotating roller, a filter bag and a scraper is matched with a driving part consisting of a fixed block, a cross bar, an annular groove, a gear ring, a driven gear, a shaft rod and a sealing pad, so that the operation of the conveying assembly and the kneading assembly can be actively controlled during the stirring process, the plant raw materials are gathered, and transported toward the inner side of the arc plate and the stirring tank, and then the raw materials are kneaded by the kneading assembly, the effective components inside the plant raw materials are quickly squeezed out, and the agglomeration structure of the powder is destroyed, so that the powder particles are more dispersed, thereby increasing the contact area between the powder and the solvent and improving the dissolution rate.

The invention relates to the technical field of spring production, in particular to a clamping device for machining the end face of a cylindrical spring for hydraulic equipment, which comprises a top plate, a sleeve fixedly arranged at the top of the top plate, a clamping mechanism mounted on the surface of the top plate and a limiting mechanism arranged at the bottom of the top plate, the clamping mechanism comprises a double-rod oil cylinder, a pressure applying frame, a supporting strip, an extrusion strip, a guide seat and a pressure applying oil cylinder, the double-rod oil cylinder is fixedly installed at the top of the top plate, and the pressure applying frame is fixedly arranged at the output end of the double-rod oil cylinder; according to the clamping device for machining the end face of the cylindrical spring for the hydraulic equipment, the spring can be effectively supported and clamped when the spring needing to be machined is clamped, the clamping position can be conveniently adjusted, the spring is further clamped and fixed after being positioned, then pressure is applied to the spring, the contact effect of the spring and a grinding wheel is guaranteed through pressure application, and the machining efficiency is improved. And the limiting rod extends out and is clamped to the end part of the spring, so that the clamped spring is prevented from rotating and deforming in the polishing process.

The utility model discloses a wire-to-board connector. The wire-to-board connector comprises a board end joint and a wire end joint, the plate end connector comprises a plate end body, the plate end body is provided with an insertion cavity, a through hole is formed in the side, opposite to an opening of the insertion cavity, of the plate end body, and a first clamping table is arranged at the position, corresponding to the through hole, of the inner top wall of the insertion cavity. The wire end connector comprises a wire end body, the top of the wire end body is provided with a pressing tongue plate, and the pressing tongue plate is provided with a second clamping table used for being connected with the first clamping table in a buckled mode. According to the utility model, the through hole is arranged at one side of the board end body opposite to the opening of the insertion cavity, so that the first clamping platform can be arranged on the inner top wall of the insertion cavity, thereby facilitating the development of a connector die, reducing the development cost of the die, and improving the production efficiency; meanwhile, as the through holes are formed in the side edge of the board end body, foreign matters entering the plugging cavity can be reduced, and the plugging and contact performance of the connector is ensured.

The invention discloses a multi-parameter sensing integrated facial mask concentration monitoring device and a facial mask preparation process.The multi-parameter sensing integrated facial mask concentration monitoring device comprises a base table, a conveying table, a facial mask cutting frame and a bag storage device.In the using process, after facial masks and moisturizing solutions in facial mask bags are filled, the rotating angle of a lateral pressing plate is adjusted through an electric rotating shaft at the moment, and then the facial masks and the moisturizing solutions are fed into the facial mask bags; according to the mask bag, one end of a lateral pressing plate rotates to press the surface of one side of the mask bag, then a vertical lifting guide rail is arranged to drive a fixing arm to vertically ascend, and along with the vertical ascending of the fixing arm, the lateral pressing plate can continuously move on the surface of the mask bag, so that air retained in a hollow cavity area of the mask bag is quickly extruded outwards; the packaging volume of the mask bag is reduced, the transportation cost is reduced, and after gas in the mask bag is exhausted, the volume in the mask bag can be compressed, so that the mask piece and the moisturizing solution in the mask bag can be effectively infiltrated and contacted, and the infiltration degree of the mask piece is improved.

The energy-saving type emulsion wastewater treatment device comprises a bottom plate, a waste barrel and a storage barrel, the waste barrel is fixedly installed on one side of the upper end of the bottom plate, the storage barrel is fixedly installed on the other side of the upper end of the bottom plate, and an adjusting treatment structure is installed on the rear wall face of the waste barrel; the adjusting treatment structure comprises a mounting frame, a first motor, a lead screw, a moving block, a second motor and a roller. The installation frame is fixedly installed on one side of the rear wall face in the waste barrel, the first motor is fixedly installed at the upper end of the installation frame, the two ends of the lead screw are movably embedded in the upper wall face and the lower wall face of the installation frame through bearings respectively, and the upper end of the lead screw is connected with the driving end of the first motor. According to the energy-saving type emulsion wastewater treatment device, the adopted lead screw is matched with the first motor, the height of the roller can be adjusted according to the liquid level of waste liquid in the waste barrel, and the contact effect of the roller and the liquid level of the waste liquid is guaranteed.

A substrate heating carrier comprises a rectangular plate, a plurality of rectangular holes are formed in the rectangular plate from top to bottom in a penetrating mode, the rectangular holes are evenly distributed in the rectangular plate, annular grooves are formed in the upper ends of the rectangular holes, embedded grooves are formed in the two ends of the rectangular holes in the length direction respectively, penetrating rods are arranged at the bottoms of the embedded grooves in a penetrating mode, and end caps are arranged at the lower ends of the penetrating rods. The upper end of the penetrating rod is connected with an upper top plate through threads, the upper top plate is provided with a step groove, the upper end of the penetrating rod is sleeved with a spring, the spring is located between the upper top plate and the bottom of the embedded groove, the two sides of the rectangular hole in the width direction are each provided with a pair of kidney-shaped holes, and movable screws are movably arranged in the kidney-shaped holes. The upper ends of the moving screws located on the same side are connected with upper clamping plates through threads, and the upper clamping plates are located on the upper sides of the rectangular plates. According to the utility model, the substrate is convenient to take and place, the limiting and fixing effect on the substrate is improved, the problem that the substrate moves when being transferred is avoided, and the contact effect of the lower wall of the substrate and the heating block can be ensured.

The invention discloses a reference electrode for a cement floor and a manufacturing method of the reference electrode. The reference electrode comprises an outer lead, a sealing cover, a wire, a solution pipe, a microporous chassis and a sponge sleeve, the microporous chassis comprises a base and a convex column which are integrally formed; the protruding column is located in the center of the base and extends upwards in the mode of being perpendicular to the base. The sponge sleeve wraps the lower portion of the micropore base plate and is used for making direct contact with the cement floor. The solution pipe is arranged on the convex column in a sleeving manner, and a cavity for containing the saturated copper sulfate solution is formed by the solution pipe and the convex column; the sealing cover is arranged at the top of the solution pipe and is used for sealing the cavity; one end of the wire is inserted into the saturated copper sulfate solution, and the other end of the wire is connected to the outer lead; and the outer lead passes through the sealing cover and is led out. According to the invention, the electrochemical potential of the cement and concrete surface can be expressed more accurately.

The present application discloses an AC power surge protector, which relates to the technical field of power surge protection, and includes a cylinder body, a cover body, an electrode column and a varistor group, wherein the electrode column is coated with a first insulator, a second insulator is arranged in the cylinder body, a positioning groove for placing the varistor group is arranged in the second insulator, the varistor group includes a plurality of varistors stacked in sequence, and each varistor is coaxially placed in the positioning groove, the surface of the varistor is provided with an aluminum sand surface, and a sand pit is arranged on the aluminum sand surface, an aluminum film is arranged between two adjacent varistors, and a clamping structure for clamping the electrode column against the varistor group is arranged on the cylinder body. A gas discharge tube is also installed in the cylinder body, and the gas discharge tube is respectively connected to the varistor group and the cylinder body, and a grounding column is arranged at the bottom end of the cylinder body. The present application ensures that each varistor can evenly share the voltage and current, thereby extending the service life of the AC power surge protector.

The utility model discloses a chipping cleaning device for a machine tool, which relates to the technical field of machine tool auxiliary equipment and comprises a machine tool frame, a chipping receiving plate is mounted on the inner wall of the machine tool frame, two discharge grooves are formed in the outer surface of the machine tool frame, two guide frames are mounted on the outer surface of the machine tool frame, and two collecting components are mounted on the outer surface of the machine tool frame. A moving plate is arranged on the inner wall of the machine tool frame, and a square groove is formed in the outer surface of the moving plate. Through cooperative arrangement of the machine tool frame, the chip receiving plate, the discharging groove, the guiding frame, the collecting assembly, a moving plate, a square groove, a moving assembly and a cleaning assembly, chips generated during machining of the machine tool can be borne through the chip receiving plate, the moving assembly can drive the moving plate and the cleaning assembly to move, the chips can be cleaned, and the machining efficiency of the machine tool is improved. And in addition, the cleaning assembly can make close contact with the chip receiving plate, fine chips can be cleaned up, and the cleaning effect of the device can be guaranteed.

The invention discloses a panoramic recognition self-timer unmanned aerial vehicle based on multi-mode perception, and relates to the technical field of unmanned aerial vehicles, the unmanned aerial vehicle comprises an unmanned aerial vehicle body, perception radars, an adjusting assembly, a camera and a temperature control assembly, the multiple perception radars are installed on the unmanned aerial vehicle body in an array mode, and the camera is installed on the unmanned aerial vehicle body through the adjusting assembly; the adjusting assembly is electrically connected with the sensing radar, a temperature control assembly is arranged on the unmanned aerial vehicle body, the internal temperature of the unmanned aerial vehicle body is controlled through the temperature control assembly, and the temperature of the unmanned aerial vehicle body is controlled through multi-mode sensing formed by the sensing radar and the camera. According to signal feedback and video analysis of the sensing radar, the camera can be controlled through the adjusting assembly to carry out multi-attitude panoramic adjustment, synchronous attitude adjustment is facilitated, the target accurate sensing and continuous tracking effect is improved, and the dynamic shooting requirement of a selfie scene can be met.