444 results about "ELASTIC ADHESIVE" patented technology

The invention relates to a distribution box with a cable anti-wear function, and relates to the technical field of distribution boxes, the distribution box comprises a box body and two box doors, the middle part in the box body is fixedly provided with a partition plate along the vertical direction, one side of each box door is hinged to the box body, and the other side of the box body is detachably connected with the partition plate; a partition plate is arranged in the box body, a communication opening is formed in the partition plate, an insulating rubber plate used for blocking the communication opening is fixedly arranged in the box body, a plurality of wiring holes are formed in the insulating rubber plate, and elastic protective sleeves are embedded in the inner walls of the wiring holes; in the application, when the cable is connected with the electrical equipment installed in the two cavities, the cable penetrates through the corresponding elastic protective sleeve, and due to the installation arrangement of the elastic rubber plate and the partition plate, the elastic protective sleeve is used for protecting the cable, so that the possibility that the insulating skin on the periphery of the cable is abraded by the box body and the partition plate is reduced, and the reliability of the cable is improved. Meanwhile, the corresponding service life is prolonged, and the corresponding potential safety hazard is reduced.

The present application relates to the technical field of medical devices, and discloses a flexible sputum scab remover for pneumology department, which comprises an outer rod, the end of the outer rod is provided with a sputum suction head, the sputum suction head and the inner part of the outer rod are provided with a flow guide pipe, the inner part of the outer motor stator fixedly connected with the outer rod is rotatably connected with an inner rotor sleeve ring, the inner part of the inner rotor sleeve ring is threadedly connected with a threaded sleeve rod, and the end of the threaded sleeve rod is movably connected with an extension rod; the rotating ring is driven to rotate by the annular motor, the flexible brush rod is driven to rotate by the rotating ring, the flexible brush rod is used for cleaning the respiratory tract by high-speed rotation, the flexible brush rod is used for scraping, the damage degree of the respiratory tract is low due to the elastic colloid material of the flexible brush rod, the contact efficiency with sputum scab is improved by high-speed rotation, the flexible brush rod is used for cleaning, the cleaning efficiency and the cleaning effect of the device are effectively ensured, the damage of the flexible brush rod to the respiratory tract is reduced, and the cleaning safety of the flexible brush rod is improved.

The present invention relates to the technical field of liquid cooling, and discloses a coolant distribution assembly for a heat dissipation plate and a heat dissipation plate, including a heat dissipation fan, a liquid cooling pump and a coolant distribution assembly of the heat dissipation plate. The coolant distribution assembly of the heat dissipation plate includes a number of distribution assemblies. Heat exchanges with the heat exchange tubes, so that the heat is conducted into the air chamber through the heat conduction columns above the heat conduction sheets, causing the expansion gas in the air chamber to expand due to heat. Furthermore, it prompts the corrugated airbag to expand and push the extrusion roller to slide on the inclined guide rail. When the corrugated airbag contracts, it will be reset by the reset spring. At this time, the sliding position of the extrusion roller will change with the expansion and contraction of the corrugated airbag, thereby changing the degree of extrusion of the elastic rubber tube and adjusting the flow rate of the coolant passing through the elastic rubber tube. On the basis of not increasing the equipment cost, it ensures that the heat can be evenly dissipated from the equipment, automatically distributes the coolant for heat dissipation plates with different heat amounts, and makes the heat dissipation uniform.

The invention discloses a floating type riverway water quality detector for municipal environment monitoring, and belongs to the technical field of water quality detectors, the floating type riverway water quality detector comprises a floating body floating in a riverway, the lower end of the floating body is fixedly provided with a fixing cylinder for sampling, the inner side of the floating body is fixedly provided with a partition plate, and the partition plate is provided with a detection module; a drainage pipe is rotationally connected to the center of the rotating seat, a sample tank for collecting samples and a water outlet pipe for discharging washing water are mounted on the partition plate, a water inlet groove is formed in the lower end of the fixing cylinder, a purification assembly is mounted on the inner side of the water inlet groove, and meanwhile an elastic rubber sheet is mounted at the upper end of the water inlet groove. The floating type river water quality detector for municipal environment monitoring can conveniently collect and store a water sample in the detection process, and can flush a pipeline by using a purified water body after single detection, so that the subsequent detection precision is ensured.

The invention provides an indoor and outdoor universal detachable nail-free sports wood floor. The indoor and outdoor universal detachable nail-free sports wood floor comprises a plurality of nail-free detachable elastic modules; the nail-free disassembly and assembly elastic module comprises an integrated nail-free floor module 1, a small elastic rubber mat 2, a large elastic rubber mat 3, a connecting fork 4, a fastener 5 and a four-foot claw 6. The adjacent nail-free and nail-free disassembly and assembly elastic modules are connected through the connecting forks 4 and the fasteners 5, and the nail-free and nail-free disassembly and assembly elastic modules are simply and detachably arranged, so that the nail-free and nail-free disassembly and assembly elastic modules are rapidly assembled and disassembled. Compared with an existing traditional solid wood detachable sports wood floor, through integral compression molding and nailless treatment of the integral nailless floor module 1, structural assemblies are greatly reduced, and the comprehensive cost including the material cost and the manufacturing cost of the detachable module is reduced; compared with an existing indoor and outdoor universal nail-free sports wood floor technology, the nail-free sports wood floor is simpler in structure, can be applied to a leveling field without leveling with lower material cost and installation cost, and can be quickly and repeatedly disassembled and assembled.

The invention relates to a method for treating an interface between a resin-based composite material and an aviation alloy. The method comprises the following steps: firstly, processing a micro inverted taper hole in a to-be-bonded surface of an alloy, then carrying out surface treatment, then coating a thermoplastic elastic adhesive on the to-be-bonded surface, putting the to-be-bonded surface into a vacuum oven for treatment, taking out the to-be-bonded surface, and carrying out heating, pressurizing and co-curing with a composite material. The micro inverted cone hole can remarkably increase the bonding area of the resin-based composite material and the alloy, and the inverted cone structure can effectively prevent debonding caused by mismatching of thermal expansion coefficients of an adhesive and a metal interface in the temperature change process; the thermal expansion coefficient of the thermoplastic elastic adhesive is between the thermal expansion coefficient of the resin-based composite material and the thermal expansion coefficient of the alloy material, the thermoplastic elastic adhesive has certain flexibility, a buffer layer is formed between the fiber-reinforced resin-based composite material and an alloy interface through the adhesive, and the probability that in the cooling process of the fiber-reinforced resin-based composite material and the alloy, the thermal expansion coefficient of the fiber-reinforced resin-based composite material and the alloy is lowered can be effectively lowered. And the interface thermal residual stress is caused due to the large difference between the thermal expansion coefficients of the two.

The invention discloses a self-cleaning type hydrogen purification adsorption tower, and belongs to the technical field of self-cleaning type hydrogen purification adsorption towers, the self-cleaning type hydrogen purification adsorption tower comprises a vertically arranged tower body, a gas inlet pipe is mounted at the lower part of the tower body, a gas outlet pipe is mounted at the upper part of the tower body, and a fixed seat is fixedly mounted on the inner wall of the upper part of the tower body; a lifting plate is installed on the inner side of the fixing base in a lifting mode, a rotating base is elastically and rotationally installed on the inner wall of the upper portion of the tower body, an elastic rubber part is fixedly connected between the lifting plate and the rotating base, a flushing air pipe is fixedly installed on the upper portion of the tower body, and a motor is fixedly installed on the top of the tower body; and an adjusting assembly for controlling the lifting plate to lift is connected between the motor and the lifting plate. The self-cleaning hydrogen purification adsorption tower can further perform auxiliary pressurization in the adsorption process so as to improve the adsorption effect, and can realize efficient backflushing and cleaning after the adsorption is completed, so that the regeneration adsorption effect of an adsorbent is ensured.

The utility model provides a fabric structure with a graphic effect and a wearable product, and relates to the technical field of cloth production. Comprising first elastic cloth, second elastic cloth and an elastic graphic information layer arranged between the first elastic cloth and the second elastic cloth, and at least one of the first elastic cloth and the second elastic cloth is transparent so as to display graphic information of the graphic information layer; the graphic information layer sequentially comprises the following structures: a graphic information bearing layer which is an elastic gelatinous layer and is arranged on the first elastic cloth; and the second adhesive layer is at least partially arranged on the graphic information bearing layer and is adhered to the second elastic cloth. According to the scheme, the production efficiency of the fabric with the lace effect is improved, and the fabric has a good elastic effect.

A test tube rack relates to the field of test tube racks and comprises a horizontally arranged bottom plate and a cuboid frame arranged on the upper plate surface of the bottom plate, the cuboid frame at least comprises four stand columns distributed at intervals, and a transverse positioning rod layer and a longitudinal positioning rod layer are arranged in the cuboid frame. The transverse positioning rod layer comprises a plurality of transverse positioning rods which are horizontally distributed at intervals, the longitudinal positioning rod layer comprises a plurality of longitudinal positioning rods which are horizontally distributed at intervals, first positioning mechanisms are arranged at the two transverse ends of the cuboid-shaped frame, and second positioning mechanisms are arranged at the two longitudinal ends of the cuboid-shaped frame; an elastic layer is arranged on the lower portion of the cuboid-shaped frame and located below the transverse positioning rod layer and the longitudinal positioning rod layer, the elastic layer comprises a plurality of elastic strips which are horizontally arranged at intervals, an elastic gap is formed between every two adjacent elastic strips, and the width of each elastic gap is smaller than the diameter of a test tube. The problem of distinguishing different states of test tubes with different diameters can be solved.

The utility model relates to the technical field of packaging boxes, and discloses a heat preservation plastic packaging box which comprises a box body, the box body comprises a first heat insulation plate, an inert gas plate and a shock absorption layer, a top cover is arranged above the box body and comprises an elastic rubber sleeve, a sealing rubber buckle and a second heat insulation plate, a handle groove is formed in the upper end face of the top cover, and a handle is arranged in the handle groove. A lifting handle groove is formed in the top cover, a lifting handle body is installed in the lifting handle groove, a classification partition plate is fixedly arranged in the box body, and a first heat insulation plate is arranged in the inner wall of the box body. Sealing rubber buckles are arranged, finally, the four sealing rubber buckles on the top cover are correspondingly connected with clamping grooves in the box body, and the sealing rubber buckles are matched with elastic rubber sleeves, so that the box body is convenient to use; the sealing effect is greatly improved, the number of the sealing rubber buckles is four, the sealing performance is further improved, the second heat insulation plate can effectively prevent heat from entering or flowing out of connecting gaps, the heat preservation performance is further improved, meanwhile, the box body is sealed more firmly, and the stability of the box body is improved.

The invention provides elastic gel for beauty and skin care. The elastic gel is prepared from the following raw materials in parts by weight: 100 to 200 parts of hydrogen-containing polysiloxane, 50 to 100 parts of polyethylene glycol, 400 to 1000 parts of carrier fluid, 10 to 20 parts of a catalyst, 10 to 20 parts of a solubilizer and 15 to 25 parts of a humectant. The elastic gel is prepared by mixing the hydrogen-containing polysiloxane, the polyethylene glycol, the solubilizer, the humectant and the like, so that the viscous feeling of the nursing material can be effectively reduced when the elastic gel is used, and the components in the nursing material can be more uniformly dispersed on the skin surface; essence components in the nursing material can be conveniently and uniformly absorbed by human skin, and the nursing material also has certain water retention and moisture preservation effects, so that the beautifying and protecting effects of the elastic colloid on the human skin are effectively improved.

The invention discloses a polylipoic acid-based elastic patch capable of inducing adhesion in a wet environment as well as a preparation method and application of the polylipoic acid-based elastic patch. The polylipoic acid-based elastic adhesion patch can be obtained by simply concentrating and evaporating a mixed solution of lipoic acid and methacrylated gelatin. Due to the introduction of a methacrylated gelatin polymer chain, the layered crystal structure of an original lipoic acid-based polymer is reduced, so that the water sensitivity of the lipoic acid-based polymer is reduced, the release time of lipoic acid active molecules is prolonged, and a small amount of layered crystal structures are reserved in the polylipoic acid-based elastic adhesion patch; therefore, non-adhesion and rigidity are realized in a dry environment. Once exposed to water or body fluid, the hydrophilic polymer backbone of the patch can quickly absorb moisture, the entry of water molecules destroys the layered crystal structure, resulting in softness and adhesion of the patch. In a rat model with ligation of periodontitis, the patch can effectively relieve inflammation and inhibit alveolar bone resorption.

The invention provides a steel wire raceway bearing. The steel wire raceway bearing comprises a shell; a steel wire disposed in a recess of the housing for accommodating the steel wire; and the elastic adhesive is coated between the steel wire and the concave part so as to adhere the steel wire to the concave part. The invention also provides a method for assembling the steel wire raceway bearing. The method comprises the following steps of: 1, coating the concave part with the elastic adhesive along the circumferential direction; 2, the steel wire is installed in the concave part coated with the elastic adhesive; and 3, curing the elastic adhesive so as to bond the steel wire to the concave part. Compared with the prior art provided with a buffer pad, the steel wire and the shell can be fixedly bonded together through the elastic adhesive, unexpected displacement of the steel wire can be effectively prevented, the steel wire can still be allowed to move within an allowable range, vibration of the steel wire can be absorbed, and the buffering effect is achieved.

The utility model provides a corrosion-resistant movable contact spring, which relates to the technical field of movable contact springs and comprises a movable contact spring body, a Z-shaped elastic sheet is mounted at the top of the movable contact spring body, a measuring sheet is mounted on the side surface of the movable contact spring body, a laser transmitter is mounted on one surface of the inner side of the measuring sheet, and the laser transmitter is mounted on the other surface of the inner side of the measuring sheet. A laser receiver is installed on the side, away from the laser transmitter, of the inner side face of the measuring piece, an elastic rubber sleeve is installed on the surface of the movable contact spring body, a reinforcing piece is installed on the inner side of the movable contact spring body, and a sealing ring is installed on the surface of the reinforcing piece. The movable contact spring body is composed of a protective layer, a stainless steel base body, an anti-corrosion layer, a passivation layer and an anti-rust layer in sequence from top to bottom, so that the overall corrosion resistance of the movable contact spring is improved, and the service life of the movable contact spring is prolonged.

The utility model relates to the technical field of temperature measurement, in particular to a radiation thermometer calibration device which comprises a box body, a control system and a radiation cavity are arranged in the box body, a black body radiation plate is arranged in the radiation cavity, a radiation window is arranged on the front side of the box body and communicated with the radiation cavity, a sealing cover is arranged on the radiation window, and a calibration interface is arranged on the sealing cover. The calibration interface is wrapped by an elastic silica gel pad, the control system comprises a controller, a temperature sensor and a power supply module, the power supply module is installed in the box body, and stable black body radiation and accurate temperature are ensured through a stable black body radiation plate and an accurate temperature control system, so that the calibration precision of the radiation thermometer is improved, and the calibration precision of the radiation thermometer is improved. A plurality of temperature sensors are arranged in the radiation cavity, temperature distribution is monitored in real time, temperature uniformity is ensured, calibration accuracy is further improved, a handle is hinged to the top of the box body, an elastic rubber mat is wrapped, friction and noise are reduced, and user experience is improved.

The invention relates to a seismic isolation groove system for reducing the influence of an existing railway on excavation of a foundation pit in an adjacent area, which comprises a seismic isolation device arranged in a seismic isolation groove between the railway and the adjacent foundation pit, and the seismic isolation device comprises two seismic isolation arms connected through a connecting piece and respectively abutted against two opposite support row piles of the seismic isolation groove, each shock insulation arm comprises a shock insulation support, an elastic rubber pad, a rod piece and a bottom plate, wherein the shock insulation support comprises a lead core, and steel rings and functional rubber rings which are alternately arranged on the lead core; one end of each energy dissipation device is movably connected with the corresponding connecting piece, and the other end of each energy dissipation device is connected with a damping support at the contact point of the supporting row pile and the bottom face of the shock insulation ditch. Compared with the prior art, the vibration isolation system has the advantages that the vibration isolation efficiency and the structural stability are improved, the system durability is enhanced, and the vibration isolation system adapts to diversified vibration scenes and is good in environment adaptability and maintainability.

A fiber preform includes first fiber tows located in a first area on a base, a second fiber tow located in a second area on the base other than the first area and stitched onto the base with a water-insoluble fixing thread, and a fixer located across the first fiber tows to fix parts of the first fiber tows to the base. The fixer is a third fiber tow stitched onto the base with a water-insoluble fixing thread, or the fixer is a glue or an elastic adhesive. The first fiber tows are displaceable relative to one another. The first area is displaceable relative to the second area.

A wind turbine blade, comprising: a blade body, the blade body comprising a hollow cavity; and a counterweight assembly mounted in the hollow cavity of the blade body, the counterweight assembly being connected to the blade body by means of a first elastic adhesive layer, and the first elastic adhesive layer comprising an adhesive having a tensile modulus less than 2 GPa. The present application is used for solving the problem of damage or even falling off caused by stress concentration between a counterweight assembly and a wind turbine blade.

The utility model provides a vacuum chuck which comprises an adsorption disc, a chuck cover and a top pressing piece, the adsorption disc comprises a framework and an elastic rubber body wrapped on the framework, and at least one downward pressing protrusion is arranged at one end, facing the elastic rubber body, of the framework; the suction disc cover is arranged above the suction disc in a covering manner; the suction cup cover extends towards the framework and is provided with a flange corresponding to the downward-pressing protrusion, and the flange abuts against the framework. The top pressing piece is positioned at the upper part of the suction cup cover; a connecting rod is arranged on the framework, and the connecting rod penetrates through the suction cup cover and then is connected with the jacking piece; the vacuum suction cup overcomes the defects that an existing rotary knob type suction cup is not strong in adsorption force and not lasting in adsorption state.

Disclosed is an elastic cover comprising: an outer sheet, an inner sheet, a plurality of waist elastic bodies joined between the outer and inner sheets and extending transversely substantially parallel to each other, and a plurality of front leg elastic bodies joined between the outer and inner sheets and extending from the left front region through the crotch region to the right front region, a plurality of back leg elastic bodies joined between the outer and inner sheets and extending from the left back region through the crotch region to the right back region, wherein the front and back leg elastic bodies are joined to the outer and inner sheets by a leg elastic adhesive which is a hot melt adhesive applied in slot-die coating provided in a plurality of stripes intermittent in the longitudinal direction for joining the leg elastic bodies.

The invention discloses a fountain solution backflow purification type alcohol fountain printing machine, and belongs to the technical field of printing machines.The fountain solution backflow purification type alcohol fountain printing machine comprises a rack, a motor is fixedly installed on the right side of the rack, a fountain roller is rotationally installed on the rack, a fountain is further fixedly installed on the rack, and a branch bucket is fixedly installed on the outer side of the fountain; a fixed plate is fixedly installed below the water bucket, a movable cylinder is elastically and rotationally installed below the fixed plate, the movable cylinder is connected with the shaft part of the water bucket roller through a transmission assembly, meanwhile, the transmission assembly drives the movable cylinder to rotate in a reciprocating mode, and a lifting piston piece is elastically installed on the inner side of the movable cylinder in a lifting mode; an elastic rubber piece is fixedly connected between the lifting piston piece and the fixing plate in a sealed mode. According to the fountain solution backflow purification type alcohol fountain printing machine, dripping fountain solution can be recycled, volatilized alcohol can be recycled, the alcohol concentration of the fountain solution is ensured, and meanwhile the safety of the production environment is improved.

The utility model discloses an automatic control cabinet convenient for arranging and protecting cables, which comprises a cabinet body, a limiting frame is mounted at the bottom in the cabinet body, a storage partition plate is mounted above the limiting frame, a cable arranging plate is mounted in the middle in the cabinet body, and a stretching plate is mounted on the inner side of the cable arranging plate; a second wire clamping hole is formed in the stretching plate, one end of the second wire clamping hole and one end of the first wire clamping hole are connected with wire containing grooves, and elastic rubber strips are arranged on the inner wall of the second wire clamping hole and the inner wall of the first wire clamping hole. Compared with an existing device, the automatic control cabinet convenient to arrange and protect the cables has the advantages that the cables can be clamped and limited conveniently through the first cable clamping holes and the second cable clamping holes, cable harnesses can be conveniently mounted in the cable arranging plate through the cable mounting grooves, one-to-one correspondence of the cable harnesses can be kept, the cable harnesses are simple and clear, the stretching plate can be clamped with the cable arranging plate, and the cable arranging plate is convenient to use. Therefore, under the condition that the number of cables is large, the stretching plate can be taken out, and a double cable containing space is obtained.

The utility model discloses a thin-wall metal pipeline connection sealing ring and a pipeline structure, and aims to solve the problems that an O-shaped sealing ring is adopted when an existing thin-wall metal pipe fitting is installed and crimped, a gap between the pipe fitting and a pipe cannot be fully filled well, and water leakage is easily caused. The sealing ring comprises an annular elastic rubber ring, the cross section of the elastic rubber ring comprises a first corner, a second corner and a third corner, the first corner is in a bullet shape, the second corner and the third corner are both of a round corner structure, the included angle of the second corner and the included angle of the third corner are both 50-70 degrees, and a convex circle is formed on the side length between the second corner and the third corner. The sealing ring with the specific triangular section is adopted, resistance during insertion is reduced, the second thin-walled pipe and the first thin-walled pipe are good in socket performance and convenient to install, a gap between the second thin-walled pipe and the first thin-walled pipe can be fully filled after solidification, installation failure cannot be caused, and the service life of the second thin-walled pipe and the first thin-walled pipe is prolonged. And the problem of water leakage after crimping is avoided.

The utility model provides a sound insulation device convenient to disassemble and assemble, which relates to the technical field of sound insulation accessories and comprises an installation piece and an elastic rubber strip, the installation piece is detachably and fixedly arranged in a clamping groove of a movable plate, a cavity is arranged in the middle of the installation piece, and an installation notch is arranged on one side of the cavity close to a baffle plate. And one end of the elastic rubber strip is detachably arranged in the cavity through the mounting notch, and the other end of the elastic rubber strip extends to the outer side of the cavity and is used for abutting against the baffle plate. The elastic rubber strip can move back and forth in the mounting piece, the cavity in the mounting piece can provide air resistance when the elastic rubber strip moves backwards, and the impact between the elastic rubber strip and the mounting piece during large-force closing is reduced. The structure is simple, the elastic rubber strip can be replaced by dismounting the mounting piece, and the operation is convenient.

A polyester urethane polymer containing isocyanate groups and being liquid at ambient temperature, obtained by reacting at least one monomeric diisocyanate and dimer fatty acid-based polyester diol having OH-number ranging between 28 and 120 mg KOH / g in NCO / OH ratio of at least 3 / 1, and by subsequently removing large part of monomeric diisocyanate by means of suitable separation process, wherein polymer has NCO content ranging between 1.5 and 6% by wt. and maximum monomeric diisocyanate content of 0.5% by wt. The polymer permits the production of moisture-curing polyurethane compositions for application in ambient temperatures, having improved properties in terms of open time, adhesion, application and weather resistance, with unchanged good properties of storage stability, curing rate, strength, ductility, elasticity and hazardous material classification. Compositions of this type are particularly suitable for use as elastic adhesives in replacement glass for vehicles.

The invention discloses a protector for an oxygen saturation probe, which comprises an inner air bag skin and an outer air bag skin, two ends of the outer air bag skin and the inner air bag skin are hermetically connected to a first elastic rubber ring and a second elastic rubber ring, the first elastic rubber ring and the second elastic rubber ring are parallel in two annular surfaces, the outer air bag skin wraps the inner air bag skin to form an inflatable bag, and a wrapping chamber with two open ends is formed in the inner air bag skin. And a fixed inflating head is arranged on one side of the outer airbag skin. The first elastic rubber ring is larger than the second elastic rubber ring in diameter. The oxygen saturation probe has the advantages that the oxygen saturation probe can be properly expanded from the first elastic rubber ring to be stuffed into the wrapping chamber, the whole oxygen saturation probe is wrapped by the inner air bag leather, the second elastic rubber ring is located at the end of the oxygen saturation probe, then the inflation head is connected to inflate the inflation bag, the outer air bag leather is bulged, and the inner air bag leather further wraps the oxygen saturation probe. When the oxygen saturation probe falls or collides, the outer air bag skin and the inflatable bag play a role in damping and buffering, so that the oxygen saturation probe is protected from being damaged by collision.

The utility model relates to a waterproof expansion joint which comprises two connecting parts and an elastic rubber strip part, the two connecting parts are symmetrically arranged on the two opposite sides of the elastic rubber strip part, the two ends of the elastic rubber strip part are inserted into the two connecting parts respectively, and each connecting part comprises F-shaped steel and a positioning matching piece. The positioning matching piece is welded and fixed to a bottom cross beam of the F-shaped steel and used for being connected with the end of the elastic rubber strip part in a matched mode, and the elastic rubber strip part comprises two bearing sections, a plurality of inserting strips and a deformation section. In the installation and use process of the expansion joint, the flow speed can be reduced due to friction along the way and local friction resistance when water flows in the flow channel by utilizing the curve of a path between the positioning matching piece and the elastic rubber strip part and the change of a gap, so that the leakage amount is reduced, and the water shrinks due to the influence of inertia when passing through the seam, so that the water leakage is reduced. The section of the flow beam is reduced, the leakage amount is further reduced, and therefore the sealing waterproof performance of the expansion joint is improved.

The utility model discloses a handheld rod extension fixer, splicing type handheld rod and leveler, the handheld rod extension fixer comprises a columnar main body, the two ends of the main body are respectively provided with an elastic rubber plug, the elastic rubber plug is provided with an exposed section exposed out of the main body, and the diameter of the exposed section is larger than that of the main body; the main body is further provided with two sets of locking assemblies, the two sets of locking assemblies are arranged close to the two ends of the main body respectively, and each set of locking assembly comprises at least one elastic clamping head. The handheld rod extension fixator is simple in structure and capable of effectively connecting two splicing pipes, the elastic rubber plug on the handheld rod extension fixator can enable the handheld rod extension fixator to be tightly matched with the splicing pipes, the shaking phenomenon of the splicing type handheld rod is effectively improved, and even if the splicing type handheld rod is disassembled and assembled for many times, the splicing type handheld rod is not damaged. And the spliced handheld rod still has good structural stability.

The elastic clamping tool for inertia friction of the aero-engine gas compressor drum comprises an elastic clamping sleeve and a taper sleeve, a workpiece to be welded is installed in an inner cavity of the elastic clamping sleeve, the elastic clamping sleeve is installed in an inner cavity of an inner ring of the taper sleeve, then the inner ring is installed in an inner cavity of an outer ring of the taper sleeve, the workpiece to be welded is clamped through the elastic clamping sleeve, and then the workpiece to be welded is clamped through the taper sleeve. The problem of workpiece abrasion caused by rigid clamping is avoided; meanwhile, the taper sleeve is a rigid sleeve, elastic uniform centripetal clamping is provided for the elastic rubber sleeve, it is guaranteed that vibration caused by inertia friction welding is released to a certain degree under the large upsetting force, the large inertia and the high rotating speed, and therefore high-precision welding is achieved, and the requirements for high coaxiality and radial run-out of inertia friction welding of the aero-engine compressor drum are met.

The application discloses a viscoelastic glue base for shear expansion polishing and a preparation method and application thereof. Boric acid and glycerol are used as base liquid, and a catalyst, an emulsifier, a dispersing agent, abrasive grains and the like are combined to obtain a viscoelastic glue base for shear expansion polishing. The glue base can uniformly contact the surface of a workpiece to be processed, effectively improves the processing efficiency and polishing effect, and has good applicability and economic value. The application aims to optimize the polishing characteristics of the flexible fixed abrasive tool, improve the shear expansion polishing processing efficiency, and thus realize efficient polishing of hard and brittle materials.