113results about How to "Insulation" patented technology

Provided is a thermally conductive silicone composition. (A) an organopolysiloxane having a kinematic viscosity of 10-10000 mm2 / s, (B) an organopolysiloxane having a kinematic viscosity of 10-100000 mm2 / s, (C) an aluminum nitride powder having an oxygen content of 0.5 mass% or less, a BET specific surface area of 1.0 m2 / g or less, and an average particle diameter of 3-40 [mu] m, the ratio of coarse particles of 44-105 [mu] m in a volume-based laser diffraction particle size distribution being 10.0 mass% or less of the total component (C), and (D) Irregular zinc oxide powder: the blending ratio of component (C) and component (D) is 5.0: 5.0-9.5: 0.5, expressed by mass ratio, and the total powder amount of component (C) and component (D) is 70-85 vol% of the entire composition, the thermally conductive silicone composition maintains good flowability and handling properties, has excellent heat dissipation performance, and has excellent durability and reliability under high-temperature, high-temperature, high-humidity conditions.

A solid insulation cabinet convenient to observe disclosed by the present invention comprises a base, an outer shell, an inner shell, a cabinet door, a transparent cover and a transparent door, the upper surface of the base is fixedly provided with the outer shell, the top wall of the inner shell is fixedly provided with the transparent cover, the transparent cover is rotatably connected with the transparent door through a bolt, and the inner shell is internally provided with an observation mechanism. The right end of the interior of the base is provided with a transfer pump, the right side of the shell is provided with a storage tank, the bottom end of the interior of the transparent cover is provided with a guide plate, the base is provided with a conveying mechanism, the upper surface of the shell is fixedly provided with a quartz sand tank, the upper portion of the guide plate is fixedly provided with a bottom plate, and the front side of a positioning plate is provided with a moving mechanism. According to the solid insulation cabinet convenient to observe, the camera ascends, descends and rotates around the transparent cover, so that electrical components in the transparent cover are comprehensively observed through the camera, low-temperature silicone oil circularly flows in the cavity, the heat dissipation effect is improved, and quartz sand can be completely unloaded during maintenance.

The utility model belongs to the technical field of land measurement, and particularly relates to rapid land measurement equipment, which comprises a gain antenna and a GPS (global positioning system) mu measurement instrument, the gain antenna is connected with the GPS mu measurement instrument through a lead, a telescopic support is movably mounted at the bottom of the gain antenna, a universal connecting frame is mounted on the surface of the telescopic support, and a clamping fixing frame is movably connected to the end of the universal connecting frame. The GPS mu measuring instrument is located in an inner cavity of the clamping fixing frame, a clamping base is movably installed on the surface of the universal connecting frame, and a supporting rod is welded to the surface of the clamping base. According to the utility model, the detachable protective cover is arranged above the GPS area measuring instrument, so that the functions of shading and shielding rain can be achieved, information on a display screen of the GPS area measuring instrument can be read more clearly in the use process, the GPS area measuring instrument is prevented from being wetted by rainwater, the protection of the GPS area measuring instrument can be improved, and after the use, the protective cover is sleeved on the surface of the GPS area measuring instrument, so that the GPS area measuring instrument is more convenient to use. And the rubber lining of the inner cavity of the protective cover is matched with the GPS mu measuring instrument, so that the protection on the GPS mu measuring instrument can be improved.

The utility model relates to the technical field of VPX, and discloses an expansion structure of a VPX backboard, which comprises a backboard main body, the front end of the backboard main body is provided with radiating fins, the front end of the backboard main body is provided with a radiating fan, the front end of the backboard main body is provided with sliding grooves at the upper and lower parts, a protective cover plate is inserted in the sliding grooves, and the protective cover plate is connected with the radiating fan. A magnetic attraction block is arranged on the inner side of the front end of the protective cover plate, a rear limiting barrier strip is arranged on the outer side of the protective cover plate, and side metal blocks are arranged on the two sides of the sliding groove. According to the utility model, through the arrangement of the extended heat dissipation structure, a large amount of heat can be generated when VPX is used, and the two groups of protective cover plates slide in the sliding grooves at the front end of the backboard main body during operation, so that the magnetic attraction blocks on the protective cover plates are in magnetic contact with the side metal blocks at the two sides of the sliding grooves; and then the cooling fins and the cooling fan at the front end of the backboard main body are exposed, so that the heat generated by the operation in the VPX box can be dissipated quickly, and the heat dissipation function can be expanded.

The invention relates to the technical field of packaging adhesive films, in particular to a packaging adhesive film for a light flexible assembly. The packaging adhesive film comprises a polyester bonding layer, a silane crosslinking metallocene polyolefin layer and a high-viscosity barrier layer, and the polyester bonding layer is connected with the high-viscosity barrier layer through the silane crosslinking metallocene polyolefin layer. The adhesive tape has the bonding performance of silane modified polyurethane resin and ETFE, has the insulativity and water resistance of the metallocene intermediate layer, and also has the ion adsorption barrier ability and bonding ability of the third layer after modification of ethylene-epoxy acrylic acid-vinyl alcohol resin.

The invention discloses an embedded automobile AR-HUD integrated display device which comprises an AR-HUD installation shell installed in an automobile instrument desk, a gap between the AR-HUD installation shell and the automobile instrument desk is provided with a sealing assembly, and the sealing assembly comprises a rubber ring with a notch and a rubber strip integrally formed on the outer wall of the rubber ring; the rubber ring is embedded in an automobile instrument desk, mounting grooves are formed in the outer walls of the two sides of the AR-HUD mounting shell, and an upper plate and a lower plate are welded in the mounting grooves. Dust and water vapor are effectively prevented from invading the interior of an instrument desk through a triple sealing assembly of the rubber ring, the rubber strip and the sealing compound, the environmental reliability of an AR-HUD core optical device is improved, quick disassembly of the AR-HUD mounting shell is achieved through installation in an embedded mode, dual limiting can be achieved through the elastic piece and the coil spring, and the service life of the AR-HUD core optical device is prolonged. And when the AR-HUD mounting shell is pressed downwards, clamping and locking can be automatically completed.

A lubricating oil composition comprising (A) a lubricating oil base oil, (B) an extreme pressure agent, and (C) a nitrogen-containing ashless dispersant; the lubricating oil composition has a volume resistivity of 0.0020 * 10 < 12 > [Omega] cm or more at 80 DEG C; the component (B) contains a specific phosphorus-based extreme pressure agent (B1) and does not contain a sulfur-containing extreme pressure agent (B2), or the component (B2) is contained such that the content of sulfur derived from the component (B2) is a specific amount or less; the content of phosphorus derived from the component (B1) is not more than a specific amount; the mass ratio ([phosphorus] / [nitrogen]) of the phosphorus derived from the component (B1) to the nitrogen derived from the component (C) is 0.60-2.30 (inclusive).

This invention discloses a vertical cylinder double eccentric ball joint linkage vacuum check valve and method. The check valve includes a valve body, double eccentric valve discs, a valve stem, a valve cover, a vertical cylinder, and a valve disc shaft support. The valve body has a valve seat hole, and the double eccentric valve discs are rotatably mounted on the valve body via the valve disc shaft. An arc-shaped contact surface is integrally formed on the outer side of the valve discs. Balls are embedded at the bottom of the vertically arranged valve stem, and the balls roll in contact with the arc-shaped contact surface. The valve cover is sealed and fixed to the upper end of the valve body. The vertical cylinder is vertically mounted on the valve cover, and its piston rod is rigidly connected to the valve stem coaxially. The valve disc shaft support is symmetrically fixed to the valve body and supports the valve disc shaft. This solution uses a vertical cylinder coaxial drive combined with ball rolling transmission, eliminating the traditional hard top pressure friction and significantly reducing the opening and closing resistance. The double eccentric valve discs rotate stably, and the closing response speed is faster, effectively solving the defects of slow valve closing and severe seal wear in traditional check valves. The overall assembly is stable and suitable for the long-term airtight operation requirements of industrial negative pressure vacuum systems.

The present invention discloses a method for preventing the inner wall of a ship's seawater pipe from being corroded and fouled, and relates to the field of ship protection technology. The present invention is applied to a composite material anti-corrosion coating and anti-fouling technology for the inner wall of a ship's seawater pipe. The coating has excellent anti-corrosion and anti-fouling capabilities, excellent mechanical impact resistance, and good adhesion between the coating and the pipe wall substrate, which perfectly demonstrates the dual protection technology of the coating's anti-corrosion and anti-fouling. The coating prepared by the present invention is composed of polyurea modified resin, inorganic antibacterial powder and other additives and solvents. Compared with traditional polyethylene anti-corrosion coatings, it has better corrosion resistance and mechanical impact resistance, and stronger adhesion to the substrate. It will not fall off or even block the pipeline, affect the normal operation of the pipeline system, or even constitute a safety hazard that poses a normal and safe navigation of the ship, which may occur when polyethylene materials are used as anti-corrosion coatings.

The present invention relates to the technical field of building curtain walls, and in particular to a heat-insulating and sound-insulating building curtain wall. The heat-insulating and sound-insulating building curtain wall comprises a frame assembly, a plurality of curtain wall assemblies and a plurality of connecting support rod assemblies. The installation process of the present invention is simple and quick, which reduces the installation time and labor costs. The installation steps are clear, the installation and maintenance efficiency is improved, and the installation and maintenance costs are reduced. In addition, a multi-point contact connection is provided to ensure the firmness and stability of the curtain wall assembly after installation, and to avoid accidental falling off. At the same time, the water-proof, sound-insulating and heat-insulating properties of the curtain wall are improved, the thermal management capability and structural stability of the curtain wall are enhanced, the service life of the curtain wall is extended, and the overall quality and aesthetics of the building are improved.

The utility model discloses an engineering van operating handle mechanical structure, which relates to the technical field of engineering van handles, and comprises a fixed seat, one side of the fixed seat is provided with a mounting plate, and a hollow cavity is enclosed between the fixed seat and the mounting plate; the rotating shaft is arranged in the hollow cavity; one end of the vertical shaft is connected with the rotating shaft, and the other end of the vertical shaft penetrates through the mounting plate and extends out of the mounting plate; the vertical shaft is sleeved with a compression spring, the top of the compression spring is provided with a spacer ring, and the spacer ring compresses the compression spring. The vertical shaft is driven to automatically reset through the compression spring, the operation handle is prevented from shaking left and right under the traction of the compression spring, the accuracy of the handle during operation is improved, and the stability of an engineering vehicle during lifting operation is guaranteed. And the handle structure is more closed, so that the phenomenon of clamping stagnation of the handle caused by penetration of dust, cement and acid-base water is effectively avoided, and the service life of the operating handle is prolonged.

The utility model relates to cable detection technical field, and disclose a kind of cable insulation test tool, including table board, the top of table board is equipped with stand, the top of stand is equipped with avoidance position, connection assembly is equipped in avoidance position, connection assembly includes baltic pine board two adhered in the bottom of avoidance position, the top of baltic pine board two is equipped with baltic pine board one, the top of table board is placed with the plastic water basin of conducting water, and the top of plastic water basin is equipped with the supporting plate between two stand, the top of supporting plate is equipped with baffle, wherein rear baffle is equipped with leakage schematic component, leakage schematic component includes red indicator lamp two. The wire skin of insulation test cable is wrapped by conducting water in plastic water basin, so that the damaged part can be conducted to the conducting water of plastic water basin, baltic pine board one, baltic pine board two can compress the copper wire exposed at the both ends of insulation test cable, and it is convenient to carry out power-on test for insulation test cable.

The utility model relates to the technical field of composite boards, in particular to a multi-layer composite insulating board which comprises a board body, the board body comprises two insulating layers, two connecting layers and a base layer, a vacuum cavity is formed in the base layer and has a sound insulation function, and a plurality of reinforcing boards are evenly arranged in the vacuum cavity and have a sound insulation function. A triangular columnar cavity is formed between every two adjacent reinforcing plates, stability is achieved, the structural strength of the plate body is enhanced, the service life of the plate body is prolonged, the insulating layers are fixedly installed on the two sides of the base layer through the connecting layers, and the insulating layers are made of asbestos materials and have good insulating performance. The surface layer made of rubber is adhered to the side, away from the connecting layer, of the insulating layer, the rubber has an insulating effect, the insulating performance of the plate body is enhanced, the four corners of the insulating layer, the connecting layer and the base layer are fixedly connected through screws, further reinforcement is achieved, it is guaranteed that all the layers are connected tightly, and falling and falling apart are prevented.

The invention relates to the field of power frequency voltage withstanding tests, in particular to a combined voltage withstanding device, which comprises a test transformer part comprising a first voltage transformation assembly and a second voltage transformation assembly, and the second voltage transformation assembly is stacked above the first voltage transformation assembly to form insertion connection; the protection part sleeves the first voltage transformation assembly and the second voltage transformation assembly and is used for playing a protection role; the two independent small transformers are connected in series, so that the overall size is greatly reduced, meanwhile, the overall weight is split, transportation is more convenient, and use convenience is improved; the two groups of transformers are stacked and connected in series, so that the voltage is multiplied, the transformer can be used for withstand voltage experiments of more than 35KV, meanwhile, the on-site wiring number is effectively reduced, and the safety is improved; and the protection part can support the two groups of transformers to avoid collapse and can limit the mounting position, so that the contact butt joint is more accurate, and the condition of poor contact is avoided.

The present invention relates to the field of acoustic wave communication technology, and discloses a surface acoustic wave filter, including a piezoelectric substrate, a first metal connection layer, a first passivation layer, and a second metal connection layer. A plurality of resonators are arranged at the active end of the piezoelectric substrate, and the series resonators and the parallel resonators are sequentially connected through the first metal connection layer. The first passivation layer wraps the resonators and the first metal connection layer to isolate moisture and improve performance reliability. A connection window is etched in the first passivation layer, and a ball is arranged in the connection window to contact the first metal connection layer, and the other end of the ball is in contact with a peripheral circuit (such as a ceramic or resin carrier) to realize input and output signals; the second metal connection layer is connected to the first metal connection layer through an open window on the first passivation layer, which can improve the connection freedom of the resonator, reduce the size of the surface acoustic wave filter, increase the heat dissipation efficiency, and improve the input power that the surface acoustic wave filter can withstand.

The utility model provides a greening protection structure of a roadbed slope filled with construction waste regenerated coarse-grained soil, and relates to the technical field of slopes, the greening protection structure comprises a roadbed slope, a clay layer containing organic matters, a net-based composite slope protection pad and a soil layer, the roadbed slope comprises the construction waste regenerated coarse-grained soil; the clay layer containing organic matters is laid on the upper surface of the roadbed slope; the net-based composite slope protection pad is fixed on the upper surface of the clay layer containing organic matters through an anchoring system; and the soil layer is uniformly spread on the upper surface of the net-based composite slope protection pad. According to the utility model, the clay layer containing organic matters is used for protecting the construction waste regenerated coarse-grained soil; rainwater is prevented from scouring the slope surface through the net-based composite slope protection pad, and the erosion effect of surface runoff of the slope surface is reduced. According to the structure, external rainwater can be prevented from invading, the stability of the roadbed slope filled with the construction waste regenerated coarse particle soil is effectively guaranteed, meanwhile, the slope can be rapidly greened, and the dual purposes of waste utilization and ecological protection are achieved.

This invention discloses a magnetic connector portable hard drive with magnetic field guidance function, relating to the field of portable storage device technology. It includes a hard drive housing, a magnetic connector body movably disposed at the bottom of the hard drive housing, and further includes a pressing and pulling mechanism movably disposed on both sides inside the hard drive housing, a first self-locking mechanism disposed at the bottom of the pressing and pulling mechanism, and a second self-locking mechanism disposed on both sides of the magnetic connector body. Through the pressing and pulling mechanism and the linkage protection mechanism, the magnetic connector body can be automatically retracted into the hard drive housing when disconnection is required, achieving "non-destructive disconnection" of the interface. This avoids the need for users to shake the hard drive housing left and right to pull out the magnetic connector body due to friction between the magnetic force and the components, fundamentally avoiding damage to the port springs and solder joints by lateral forces, greatly improving the mechanical life of the interface, thereby ensuring long-term stability of data transmission and reducing the failure rate and maintenance costs of the device.

The invention discloses a forming and coating process method of high, medium and low strength aluminum-clad steel wires for optical cable accessories, and belongs to the technical field of aluminum-clad steel wire strands for optical cable accessories. The preparation method comprises the following steps: placing the modified steel wire in a wire drawing machine for drawing, washing and drying to obtain the drawn modified steel wire; gluing the aluminum wire on the surface of the drawn modified steel wire to form strands to obtain a semi-finished aluminum-clad steel wire; adding composite gel and carbon fiber to ethanol, stirring evenly to obtain a composite filler; dipping the semi-finished aluminum-clad steel wire into the composite filler, taking it out, drying it, placing it in a continuous extrusion coating machine for extrusion, and winding it after cooling and drying to obtain the initial aluminum-clad steel wire. The initial aluminum-clad steel wire is added to the composite material, stirred, taken out, and dried to obtain the finished aluminum-clad steel wire. The carbon fiber and composite gel in the composite filler interact with each other and are filled to the surface of the modified steel wire, thereby increasing the bonding strength between the aluminum wire and the copper wire, and making the coating more uniform.

The invention discloses a lithium battery with a protection function and a processing technology. The lithium battery comprises a lithium battery body, the protection device comprises a base, protection plates symmetrically arranged at the top of the base, side plates, a top plate detachably connected with the protection plates and the side plates, a third rubber pad arranged at the top of the top plate, first rubber pads arranged on the protection plates, and second rubber pads arranged on the side surfaces of the side plates; the invention has the beneficial effects that the base, the protection plate, the side plates and the top plate form a six-direction rigid protection space, and the L-shaped reinforcing columns are matched to enhance the structural rigidity; the rubber pad and the ultra-thin ceramic fiber buffer film form an elastic buffer system, so that external force such as collision and extrusion is effectively resisted, and damage to the shell and damage to internal components are avoided; through precise positioning between limiting blocks and limiting grooves and between inserting plates and inserting grooves, a threaded rod is used for reinforcing and eliminating gaps, and the battery is prevented from shaking; the threaded connection design facilitates maintenance and replacement, and stability and practicability are both considered.

The invention discloses a semiconductor structure and a forming method thereof, and the method comprises the steps: providing a substrate, forming a channel laminated structure on the substrate, the channel laminated structure comprises one or more channel laminated layers which are sequentially stacked in the longitudinal direction, each channel laminated layer comprises a sacrificial layer and a channel layer located on the sacrificial layer, a gate structure crossing the channel laminated structure is formed on the substrate, and the gate structure covers part of the top and part of the side wall of the channel laminated structure; forming a first groove in the channel lamination structure and a part of the substrate at the two sides of the gate structure; forming an insulating layer on the side wall of the substrate exposed out of the first groove; and forming a source-drain doping layer covering the side wall of the insulating layer in the first groove. The insulating layer can reduce the probability that the source-drain doping layer and a device gate structure formed by a subsequent manufacturing process generate leakage current through the substrate below the channel layer, so that the performance of the semiconductor structure is improved.

The utility model relates to the technical field of electronic tags, in particular to a UHF (Ultra High Frequency) RFID (Radio Frequency Identification Device) linen tag with enhanced washability, which is characterized in that a near-field module is arranged on a base material, far-field antennas are arranged on two sides of the near-field module, and the near-field module is arranged in a circular coupling area formed in the middle of the far-field antennas and is not in contact with the near-field module; the near-field module is completely covered by the glue dripping layer, the thickness of the glue dripping layer is 1.5 mm-2mm, and the coverage range of the glue dripping layer is within a circular coupling area formed in the middle of the far-field antenna. The near-field module is completely covered by the glue dripping layer with a certain thickness formed by the glue dripping material with high peel strength and temperature resistance range, so that the invasion of water vapor and chemical substances is isolated, the position stability and the performance stability of the near-field module on the base material are protected, and the requirement of repeated washing in a complex environment is further met.

The utility model discloses an outdoor energy storage shell and energy storage equipment relates to the field of outdoor energy storage shell, and this kind of outdoor energy storage shell and energy storage equipment include the side surrounding board of n type setting surrounding three sides, the bottom surface fixed with the bottom plate in the inner wall of side surrounding board, the open inner wall of side surrounding board both ends is fixed with front side plate and rear side plate, and the middle part of front side plate is provided with several mounting holes, compared with traditional technology, can completely wrap up the socket when using in rainy day, insulates the electricity position and outside environment, effectively blocks the rainwater, greatly improves the security when plugging in rainy day, improves the adaptive scene range of mobile energy storage equipment.

The present invention belongs to the field of welding, electric spark, arc and other additive and subtractive material manufacturing technology, and discloses a universal turntable with a conductive table top. It includes a workbench, a cooling table, a mandrel, a rotating power supply mechanism, and a base; the rotating power supply mechanism is arranged on the base, and the workbench and the cooling table are connected in order from top to bottom through an insulating connection device; the workbench includes a conductive layer and an insulating layer; a mandrel is arranged on the conductive layer. The device has the characteristics of both insulated water cooling and tabletop power supply.

The invention relates to a temperature measuring module and system for a handcart circuit breaker plum blossom contact, the temperature measuring module comprises a temperature measuring assembly and a plum blossom contact, the temperature measuring assembly comprises a ceramic shell, a temperature measuring chip and a metal bracket, the rear end of a contact finger of the plum blossom contact is lengthened, the lengthened part of the contact finger is used for fixing the temperature measuring assembly, and the temperature measuring chip is used for measuring the temperature of the plum blossom contact. The touch panel of the tulip contact is designed in a manufacturing mode, it is guaranteed that the influence of the temperature measuring module on a high-voltage electric field is minimized, the temperature measuring chip, the metal bracket and the ceramic shell are manufactured through an integrated technology, and the metal bracket extends into the ceramic shell so that temperature measurement can be more accurate; the temperature measurement system comprises a sensor layer, a receiving layer and a user layer, data are sent to the receiving layer from the sensor layer, processed and analyzed by the receiving layer and uploaded to the user layer, so that the user layer analyzes online temperature data in real time and can monitor and give an alarm on real-time temperature.

This invention discloses a waterproof and moisture-proof IoT water meter, relating to the field of IoT water meter technology. It includes a water meter body, with a first water pipe and a second water pipe respectively arranged on the left and right sides of the water meter body. A protective shell is slidably connected to the first water pipe. A dehumidifying coil is fixedly connected inside the protective shell, and a humidity sensor and a controller are also fixedly connected inside the protective shell. This invention, through the combined use of the protective shell and baffle, can provide a sealed protection for the water meter body, effectively isolating external moisture and liquid penetration. This ensures the long-term stable operation of the internal electronic components of the water meter in a humid environment. The dehumidifying coil, combined with the humidity sensor and controller, can monitor the humidity inside the protective shell in real time. When the humidity exceeds a set value, the dehumidifying coil can actively adjust and remove moisture to avoid circuit corrosion or short circuits caused by condensation accumulation.

This utility model discloses a sample dispensing device for an in vitro diagnostic analyzer, including a connecting base plate, an arc-shaped plate, and a cooling plate. A hollow plate is disposed above the connecting base plate, and a horizontal drive block is slidably connected inside the hollow plate. A linkage plate is fixedly connected to the front side of the horizontal drive block, and a pointed pipette is fixedly connected to the bottom of the linkage plate. An air bladder is fixedly connected to the top of the pointed pipette. Two arc-shaped plates are disposed outside the pointed pipette, and the top of the arc-shaped plates is fixedly connected to the bottom of the linkage plate. A cooling plate is fixedly connected to the side of the arc-shaped plates away from the pointed pipette. In this utility model, while the sample is drawn in through the pointed pipette, the cooling plate is activated and provides cooling. This cooling is transferred to the contacting cooling plate, then to the connected arc-shaped plate, and finally conducted by the arc-shaped plate to the pointed pipette. This cooling process can prevent excessive cooling and effectively avoid sample inactivation, denaturation, or degradation due to high temperature, thus achieving the function of heat preservation for the sample in the pipette.

The utility model relates to the technical field of power distribution networks, and discloses an elastic operation mechanism for an outdoor primary and secondary deep fusion switch, which comprises an elastic operation mechanism shell, an insulating cylinder is arranged at the top of the elastic operation mechanism shell, a rubber layer is fixedly connected to the bottom of the elastic operation mechanism shell, an installation clamping block is fixedly connected to the bottom of the elastic operation mechanism shell, and the installation clamping block is fixedly connected to the bottom of the elastic operation mechanism shell. And shock pads are clamped on the outer surfaces of the mounting clamping blocks. The elastic operating mechanism has the following advantages and effects that the first clamping block is clamped corresponding to the first clamping hole, the second protection plate corresponds to the second clamping hole, and the installation mode is the same as that of the first protection plate, so that the periphery of the elastic operating mechanism is protected, the shock pad has an effective shock absorption effect, the protection performance is more comprehensive in the transportation process, and the transportation efficiency is improved. The elastic operation mechanism is prevented from being damaged by external force collision, the overall safety is improved, the shell of the elastic operation mechanism can be separated from the protection base after transportation is finished, and the overall size of the elastic operation mechanism is not affected.

The utility model discloses a portable gas monitoring alarm device, including the upper cover, the bottom screw thread seal fixed of upper cover has the intermediate casing, the bottom screw thread seal fixed of intermediate casing has the detection filter cup, the top of upper cover is installed with display component, the inside of upper cover is installed with communication component, the inside top fixed mounting of intermediate casing has the alarm board, the inside intermediate fixed connection of intermediate casing has the battery compartment, the inside assembly of battery compartment has the battery, the outside surface of intermediate casing correspond battery compartment department detachable seal fixed has the storehouse lid, in the utility model, through the screw thread seal connection structure of upper cover, intermediate casing and detection filter cup, realize three -level modularization sealed protection, effectively insulate moisture, dust and corrosive gas invasion, and each functional component is installed in the regional isolation, avoids electromagnetic interference and physical damage, ensures the device in the stable operation in the high -risk environment such as petroleum chemical industry, mine etc.

This utility model relates to an auxiliary support device for building inspection, belonging to the technical field of auxiliary devices for building inspection. The auxiliary support device for building inspection includes: a triangular bracket, each of the three triangles of which is fixedly connected to a telescopic leg, the bottom of which has a threaded mounting groove; and three stabilizing support mechanisms, each including a universal joint threadedly connected to the inner side of the threaded mounting groove. A foot pad is fixedly connected to the bottom of each universal joint, and a rubber bellows is fixedly connected to the top of each foot pad. A sealing cover, fixedly connected to the universal joint, is fixedly connected to the top of the rubber bellows. The rubber bellows and the sealing cover form a fully enclosed flexible protective cover, sealing the adjustment part of the universal joint inside, effectively isolating dust and mud pollutants from the construction site from intruding, ensuring the long-term sensitivity and reliability of the adjustment mechanism, and greatly extending the service life of the equipment.