602results about How to "Not easy to come out" patented technology

The invention provides a photosensitive drum driving assembly which comprises a gear wheel and an adjusting assembly, wherein the gear wheel is closely fitted at one end of a photosensitive drum; the adjusting assembly comprises a rotary driving force receiving head which extends out of the gear wheel; the adjusting assembly can be arranged in the gear wheel to move in reciprocating translation relative to the gear wheel along the axial direction of the photosensitive drum and a first direction vertical to the axial direction, and an elastic support part and an axial limit part are arranged between the adjusting assembly and the gear wheel; and the rotation driving force receiving head can be rotatably arranged on the adjusting assembly around the axis per se. Compared with the prior art, the photosensitive drum driving assembly allows simple and convenient assembly, and has stable structure performance; and a processing box in which the photosensitive driving assembly is adopted ensures stable disembarking and stable operation and has reliable performance.

The invention discloses a preparation method of a temperature regulating fiber. The method comprises the following steps: 1, carrying out two-stage dipping, squeezing, crushing, ageing, yellowing reaction, filtration, deaeration and maturation on cellulose pulp to obtain a spinning solution; 2, packaging phase change paraffin in the honeycomb micropores of a packaging material honeycomb silica to prepare phase change particles, adding an osmotic agent, an emulsifier and a ketose cross-linking agent, and uniformly mixing to prepare a phase change emulsion; 3, fully mixing the phase change emulsion with the spinning solution to prepare a phase change spinning solution, wherein the addition amount of the phase change particles is 5-25wt% of alpha-cellulose in the spinning solution; and 4, carrying out spinning formation on the phase change spinning solution, and post-processing to obtain the temperature regulating fiber. The phase change fiber prepared in the invention has the advantages of stable phase change temperature, good phase change performance, long service life and high physical and mechanical performances.

The invention discloses an excrement fetching port of a conical surface closed or spiral or buckle fixed connection structure, and relates to an excrete fetching port device with closed type excrete fetching characteristic. Port joint surfaces for performing butting are mutually closed conical surfaces; and the closing state of the port joint surface is kept by the spiral fixed connection or buckle fixed connection structure of two ports. Closed excrete fetching is realized by applying the excrete fetching port provided by the invention; the excrement fetching port has good sealing property and high reliability and is quick and convenient to operate; and even in case of residual excrete flow, the flow range is small, and the cleaning is convenient, so that the closed excrete fetching has the advantage of environmental friendliness and an more ideal effect is achieved.

The invention discloses an adjustable tensioning guide device for retracting a hose cable, and the device comprises a mounting base plate, a driving pinch roller, a lower pressure-bearing wheel, a handle, a rocker arm, a screw rod, a pressure regulating nut, a pressure spring, a rotary connecting seat and a lower check nut, wherein the driving pinch roller and the lower pressure-bearing wheel are arranged at the frontage of the mounting base plate; the lower pressure-bearing wheel is positioned below the driving pinch roller; one end of the rocker arm is connected with the upper part of the mounting base plate, and the other end of the rocker arm is connected with the end part of the driving pinch roller by virtue of a pin shaft; one end of the rotary connecting seat is sheathed on the pin shaft positioned at the outer side of the driving pinch roller, and the other end of the rotary connecting seat is sheathed on the screw rod; the spring is sheathed on the screw rod arranged above the rotary connecting seat; the pressure regulating nut is sheathed at the end part of the screw rod; the lower check nut is sheathed on the screw rod arranged below the rotary connecting seat; the bottom end of the screw rod is connected with the lower pressure-bearing wheel by a pin shaft; and the handle is arranged on the pin shaft. The adjustable tensioning guide device can be used for changing the tensile force and the pressure gap by virtue of simple adjustment, thus adapting to different cables.

The invention discloses a water-based self-crosslinking cation copolymer emulsion as well as a preparation method and application thereof, and belongs to the field of paint. Cations can polymerize functional monomers, acrylate-type monomers are comonomers, and self-crosslinking monomers are added to obtain the water-based self-crosslinking cation copolymer emulsion. The functional monomers and theself-crosslinking monomers both with positive charges are introduced through copolymerization, and accordingly, the copolymer emulsion has high stability, long-lasting mildew resistance performance and high base material adhesion. A composited high-glass-transition-temperature self-crosslinking cation copolymer emulsion and a composited low-glass-transition-temperature self-crosslinking cation copolymer emulsion are mixed proportionally to serve as a film forming substance to prepare water-based antibacterial paint, addition of film forming aids is not needed, and films can be formed at the room temperature; adhesion force of coatings is excellent, water resistance of the films lasts more than 50 days, the films can resist more than twenty thousand times of scrubbing, mildew resistance reaches the zero level according to tests, and the bacteriostasis rate is higher than 99.99%.

The invention discloses an anti-thrust structure for an air conditioner indoor unit and an air conditioner indoor unit device. The anti-thrust structure comprises a body; the body is installed at the rear part of the air conditioner indoor unit; the body is provided with an anti-thrust face; and the anti-thrust face bears against an installing component so as to limit the degree of freedom of the upward movement of the air conditioner indoor unit. According to the anti-thrust structure, the degree of freedom of the upward movement of the air conditioner indoor unit is limited through the contact with the installing component, and the air conditioner indoor unit is not easily separated from the installing component under the light upward acting force, so the installation of the air conditioner indoor unit is more stable and reliable, and the air conditioner indoor unit cannot be separated from the installing component during the later cleaning and maintaining.

The invention relates to an assembly structure for a handle and a gun body of a glue extruding gun, which belongs to an injection device in the field of general spraying or surface coating, in particular to a structure for connecting the handle and the gun body of the glue extruding gun. The structure comprises a gun body assembly part and a handle assembly part which are combined with each other, wherein the gun body assembly part and the handle assembly part are arranged into a snap fastener fastening structure which consists of a locknut element and a snap fastener element. In the proposal, the handle and the gun body of the glue extruding gun can be conveniently assembled and disassembled through mutual fastening of the locknut element and the snap fastener element, the handle and the gun body of the glue extruding gun can be closely matched to reduce the enlarged amount due to reasonable arrangement of the locknut element and the snap fastener element, and the handle and the gun body of the glue extruding gun can be matched closely matched and are difficult to pull out due to limited convex arrangement.

The invention provides a water-absorption core body for a hygienic product. The water-absorption core body for the hygienic product comprises an upper isolating layer, a water absorption layer and a lower isolating layer, wherein the water absorption layer is formed by more than two instantaneous absorption layers and more than one water locking layer in a vertically stacked mode, and the instantaneous absorption layers are arranged on the top layer and the bottom layer of the water absorption layer respectively; each instantaneous absorption layer comprises, by weight, 50-90% of wood pulp fibers and 10-50% of adhesives, and the wood pulp fibers and the adhesives are mixed to form the instantaneous absorption layers; each water locking layer is formed by macromolecule water absorption particles, and the weight of the macromolecule water absorption particles accounts for 15-75% of the weight of the water absorption layer; the upper isolating layer or the lower isolating layer is made of ES fiber layers or dust-free paper or non-woven fabric. According to the water-absorption core body for the hygienic product, due to the fact that the upper isolating layer and the lower isolating layer are adopted, wood pulp dust cannot be generated in the production process, and the water absorption particles cannot easily go out; due to the fact that combination between the instantaneous absorption layers and the water locking layers is adopted, the water absorption speed is high, the quantity of absorbed water is large, water locking performance is good, and the dry and clean state can be kept all the time.

The invention relates to a top cover assembly and a secondary battery. The top cover assembly comprises: a top cover plate having an electrode lead-out hole, an electrode terminal including a terminalplate which is located at one side of the top cover plate, covers the electrode lead-out hole and has the outer peripheral surface protruding from the inner wall of the electrode lead-out hole, a first fixing member which at least partially surrounds the terminal plate to fix the electrode terminal to the first fixing member, and a second fixing member which is connected to the top cover plate, comprises a main body part and is separated from the electrode terminal through the first fixing member, wherein one of the first fixing member and the main body part is provided with an insertion holeand the other one of the first fixing member and the main body part is provided with an insertion part inserted into the insertion hole. The terminal plate in the top cover assembly is firmly fixed to the top cover plate through the first and second fixing members so that the separation of the terminal plate and the top cover plate is avoided and the structural safety of the secondary battery isimproved.

The invention discloses a hemostatic bag for a gynecology and obstetrics department. The hemostatic bag for the gynecology and obstetrics department comprises an airbag ball, an outer bag, a hemostatic device, an inflating airbag and a liquid storage box. The outer wall of the outer bag is uniformly provided with multiple first liquid inlet holes. A cavity of the outer bag is provided with the airbag ball. The outer bag and the airbag ball are connected through a support column. A liquid guiding cavity is formed between the airbag ball and the outer bag. The right end of the outer bag is connected with a drainage tube. The tail of the drainage tube is connected with a connecting tube through an anti-disconnection framework. The lower end of the connecting tube is connected with the liquidstorage box. A cavity of the drainage tube is provided with an inflating tube. The front end of the inflating tube is communicated with the airbag ball, and the rear end of the inflating tube is connected with an inflating airbag. The inflating airbag is provided with a one-way air inlet valve. The outer side of the outer bag is provided with the hemostatic device. The hemostatic device is throughout provided with second liquid inlet holes corresponding to the first liquid inlet holes. The hemostatic bag for the gynecology and obstetrics department is capable of uniformly and effectively performing hemostasis by compression, conveniently discharging and collecting secretion and hemorrhage in a uterus in time, sterilizing the secretion and discharged blood in time, and avoiding cross infection.

The invention provides a castor installation structure and a movable air conditioner. The castor installation structure comprises a supporting element and a castor, an installation hole is formed in the supporting element, and an installation rod of the castor is fixed into the installation hole through multiple elastic positioning elements. The castor is provided with one or more elastic positioning elements, and the installation rod can be installed in a through hole or in a blind hole so that it can be ensured that when inserted into the installation hole of the supporting element, the installation rod of the castor is not likely to disengage; the elastic positioning elements have a better radial balance property compared with that of a single elastic positioning element, the balance of the castor installation structure is improved, the structure is not likely to shake, and it is also guaranteed that the installation hole of the supporting element cannot be broken when bearing stress.

The invention belongs to the field of conductive high polymer materials, in particular to dedoping-resistant dye-doped polyaniline and a preparation method and application thereof. A dye-doped conductive polyaniline material is prepared by doping and modifying polyaniline with a doping dye which contains a sulfonic group, a carboxylic group or a metal dentate on the theoretical basis that negative ions can be used for inducing polyaniline processability, can be taken as a corrosion-resistant, pollution-resistant, antibacterial, antistatic, conductive and electromagnetic shielding coating, fiber and the like, and is applied to the fields of metal corrosion prevention, environmentally-friendly treatment, catalysis materials, photoelectric materials, conductive plastic, fiber, biological sensing and the like. In the invention, dye doping of polyaniline can be realized with subsequent doping methods such as in-situ synthetic doping, impregnation doping, thermal doping, grinding doping and the like; and the dye-doped polyaniline has high dedoping resistance in organic solvents such as water, N-methylpyrrolidone (NMP) and the like, even at high temperature, and can be applied in various fields such as photoelectric materials, anti-static electricity, metal corrosion-resistant materials, and the like.

The invention relates to a photosensitive drum drive component, which comprises a gear and a driving force receiving part, wherein the gear is matched with a photosensitive drum; the driving force receiving part can receive rotary driving force; a driving force receiving head is arranged at the upper part of the driving force receiving part; more than three bump structures extend outside on the outer wall of the lower part of the driving force receiving part; more than three sliding grooves are formed in the inner wall of the gear along the axis direction of the gear; a barrier structure is arranged at the upper end of each sliding groove; the side wall of each sliding groove is communicated with a guide groove; each guide groove is communicated with the upper end of the gear and each sliding chute; and the bump structures enter the sliding grooves from the guide grooves, and are arranged along the guide grooves in a sliding manner. The bump structures can slide in the sliding grooves, so that rotating transmission between the driving force receiving part and the gear structure is achieved; the driving force receiving part is not easily separated from the gear structure; the fault rate is low; and the stability is high. The invention further provides a processing box (a selenium drum) including the photosensitive drum drive component.

The invention relates to a preparation method for a floatable nano mesoporous zero-valent iron carbon material and belongs to the technical field of material preparation. The preparation method comprises: firstly adding P123 or F127 into an ethanol-water solution to be stirred and fully dissolved, then adding resorcinol and Fe(NO3)3.9H2O and stirring the solution for 1-2 hours, and finally adding formaldehyde to prepare a phenolic resin / iron complex of resorcinol-formaldehyde; adding sodium bentonite into the ethanol-water solution to form a sodium bentonite ethanol-water suspension, dropwise adding the sodium bentonite ethanol-water suspension into a mixed liquid of obtained phenolic resin / iron complex of resorcinol-formaldehyde and fully stirring the mixture, then aging the mixture for 36-72 hours at 60 DEG C, dividing the mixed liquid into two layers, separating and removing supernate by liquid dividing, and thermally treating a thick sol in the lower layer for 24 hours at 80 DEG C to obtain powder; extracting the obtained powder by ethanol for 2-3 times; and carrying out thermal reduction on extracted powder to prepare the floatable nano mesoporous zero-valent iron carbon material. According to the preparation method provided by the invention, the reaction activity of the iron carbon material is enhanced, and meanwhile, the problem that filler is hardened and inactivated is solved.

The invention relates to a flow-foam and anti-ageing wet type polyurethane resin for synthetic leather and a preparation method thereof. The polyurethane resin comprises the following components in percentage by weight: 7 to 15% of diphenylmethane-4, 4'-diisocyanate, 8 to 15% of polyadipate type polyester polyol, 2 to 7% of diethylene glycol phthalic anhydride polymer, 0.5 to 3% of castor oil, 1 to 4% of chain extender, 60 to 80% of N, N-dimethylformamide, and 1 to 4% of assistant. The polyurethane resin is less and small in foam structure (low foam), high in elasticity, small in crease after being creased, and high in restorability.

The invention provides a device for fixing a data storage unit in order to fix the data storage unit in a magnetic rack provided with a fixing slot. The device comprises a fixing frame capable of accommodating the data storage unit and a fastener unit mounted at the front end of the fixing frame in a pivoting manner, wherein the fastener unit comprises a handle, a first elastic piece mounted in the handle, a sliding piece mounted in the handle in a sliding manner, and a fastening piece mounted in the handle in a rotatable manner; the sliding piece connected to the first elastic piece comprises a fastening tongue capable of extending out of the fastening unit and being arranged in the fixing slot of the magnetic rack in a fastening manner and a push rod in abutting joint with the fasteningpiece; and the fastening piece is provided with a fastening part fastened to the fixing frame. Therefore, when the fastening tongue is pressed, the sliding piece can slide into the handle, and the push rod can drive the fastening piece to rotate, so that the fastening part can be detached from the fixing frame. The device of the invention can prevent the device for fixing the data storage unit from being detached from the magnetic rack in the installation process or under the action of vibration.

The invention provides a double-cavity nose bile drainage tube, and belongs to medical equipment. The double-cavity nose bile drainage tube comprises a head portion, a body portion and an accessory, wherein the head portion comprises an outer drainage tube body and an inner drainage tube body; one end of the outer drainage tube body is bent and in an arc shape, the other end of the outer drainage tube body is communicated with the body portion, the tail end of the bent portion of the outer drainage tube body is provided with a straight hole, and the side face of the bent portion of the outer drainage tube body is provided with two sets of outer drainage tube body side holes; the upper end of the inner drainage tube body is provided with an upper inner drainage tube body port, the lower end of the inner drainage tube body is provided with a lower inner drainage tube body port, and the upper portion of the side wall of the inner drainage tube body is provided with four inner drainage tube body side holes side by side; the accessory comprises an outer joint and an auxiliary device. By means of the double-cavity nose bile drainage tube, bile outward drainage and bile inward drainage can be conducted, excessive loss of bile is avoided, and recovery of illnesses is facilitated.

The invention discloses an A-grade fireproofing thermal insulation material as well as production equipment and method thereof and belongs to the technical field of fireproofing thermal insulation materials of exterior walls of buildings. According to the method, inorganic fireproofing glue is injected into an organic foam material body, and spaces of an organic foam material are filled by utilizing the inorganic fireproofing glue, so that an inorganic fireproofing material and the organic material body can be firmly combined, fireproofing and heat retaining properties of the organic foam material are improved, and strength of the fireproofing thermal insulation material is enhanced; and besides, a concave-convex surface is formed on a die in the method, so that the surface of the pressed fireproofing thermal insulation material is uneven, mud scraping in construction can be facilitated, and strength of bonding between mud and the thermal insulation material is enhanced.

The invention discloses a locating pin, which comprises a locating pin body, wherein a reversed 'T'-shaped slot is arranged in the locating pin body, 'I' portion of the 'T'-shaped slot is a threaded hole which is communicated with outside, holes communicated with outside are bilaterally symmetrically arranged in a '-'portion of the 'T'-shaped slot, diameter of each of the holes is smaller than that of the '-' portion of the 'T'-shaped slot, each of the holes is provided with one of ejector blocks, each of the ejector blocks is provided with a lug to prevent the ejector block from being out of the hole, a threaded rod is arranged in the threaded hole, and a sealing element is arranged blew the threaded rod. When the locating pin is used, the threaded rod is in a clockwise rotation and the threaded rod is rotated into the threaded hole, air in the reversed 'T'-shaped slot is extruded by the threaded rod so as to produce an outward pushing force for the ejector blocks in the holes, the ejector blocks are in contact with the locating holes, thereby even though mechanical vibration is produced during a normal operation of mechanical equipment, the locating pin is prevented from being out of the locating holes, and the stability and the continuity of mechanical equipment operating and the production efficiency are improved.

The invention discloses a fireproof curtain wall system. The fireproof curtain wall system comprises a fireproof panel, a keel, a fastening bolt, a steel pressing plate and a decorative cover, wherein the fastening bolt penetrates through the steel pressing plate and is connected with the keel; the fireproof panel is pressed against the keel through the steel pressing plate; the decorative cover is buckled on the steel pressing plate; bending parts of which openings face the fireproof panel are arranged on two sides of the steel pressing plate; fastening parts which extend inwards are arranged on the two sides of the decorative cover and are buckled at the bottom ends of the outer side walls of the bending parts; the outer side walls of the bending parts are attached to the inner side wall of the decorative cover. The fireproof curtain wall system has the advantages of simple structure, simple formation, low cost and high buckling strength.

The invention discloses a multifunctional anorectal drainage tube comprising a tube body. A main drainage passage tube is arranged inside the tube body and is provided with a drainage inlet and a drainage outlet. A bulb water-injecting passage tube is further disposed inside the tube body. A retaining elastic bulb and a locking fastener are disposed on outer wall of the front end of the tube body in order. The outer wall of the retaining elastic bulb is sleeved with a hemostatic dressing layer which is fixed on the tube body through the locking fastener. The outer wall of the front segment of the tube body is provided with a plurality of elliptical drainage pores; the drainage outlet of the main drainage passage tube is connected with a drainage bag; a sealing injection valve is disposed at the injection end of the bulb water-injecting passage tube. According to the multifunctional anorectal drainage tube, the retaining elastic bulb functions in internal fixation, the locking fastener functions in external fixation, separation rarely occurs, no contamination or damage occurs, long-term dwelling is available, and tube separation is avoided. The hemostatic dressing layer bulges along bulging of the retaining elastic bulb to allow drug hemostasis and compression hemostasis for an anorectal wound, recovery is promoted, and pain is reduced.

The invention provides a fire-fighting lance rack and relates to the field of fire-fighting equipment. The fire-fighting lance rack includes a base, steel needles are installed at a bottom of the base, a supporting column is fixedly installed at a top of the base, an anti-toppling mechanism is installed on an outer side of the supporting column, a rotating block is installed at a top of the supporting column, a rotating disc is installed in the rotating block, a connecting column is installed at a top of the rotating disc, and a fixed mechanism is installed at the top of the connecting column.According to the fire-fighting lance rack, by rotating a rotary ring, the rotating ring rotates to move up and down between a first limiting ring and a second limiting ring, the rotating ring is moved to an uppermost part of the supporting column, at the moment, a lantern ring can move up and down at will, one anti-toppling transverse rod is bent upwards, the lantern ring is pushed to move upwards under the linkage of a connecting rod, the other two anti-toppling transverse rods are synchronously folded through the linkage of the lantern ring, after the anti-toppling transverse rods are all folded, the size of the fire-fighting lance rack can be greatly reduced, the fire-fighting lance rack is convenient to stack and place and is convenient to transport.

The invention belongs to the technical field of alloy material preparation and representation, and discloses a method for preparing a micron-order nickel-based high-temperature alloy powder transmission electron microscope film sample. The method comprises the following steps: adding nickel-based alloy powder into an electroplating liquid, and stirring so as to obtain a suspension; putting a cathode nickel piece and an anode nickel piece into the suspension so as to obtain uniform nickel-based alloy powder on the cathode nickel piece; connecting a power supply to implement electroplating, wrapping the nickel-based alloy powder with a nickel plated layer, performing mechanical thinning so as to obtain a circular piece of which the diameter is 3 mm, and further grinding so as to obtain a sample which takes the shape of a wedge in a thickness direction; and pasting the sample at the opening of an opened copper ring, enabling the thin end of the wedge to be close to the opening center of the copper ring, and putting the opened copper ring with the sample into an ion thinning instrument for ion thinning, thereby obtaining a film sample area for transmission electronic microscopy observation. The method provided by the invention has the advantages of being short in time, high in plated layer quality and good in wrapping effect of the nickel-based high-temperature alloy powder.

The invention discloses an electric connector for a flat conductor and a method for assembling the electric connector with the flat conductor. The electric connector comprises an insulation body and a shielding casing, wherein a guide groove for inserting the flat conductor is formed in the insulation body, two embedding grooves are arranged in positions on the insulation body corresponding to two notches of the flat conductor, the embedding grooves are communicated between the guide groove and the outer side of the insulation body in the thickness direction of the flat conductor, an elastic clamp buckle part integrally connected onto the insulation body is arranged in the embedding groove, the clamp buckle part of the elastic buckle part in the natural state extends into the guide groove, the flat conductor is inserted to prop open the elastic clamp buckle part during the assembly, after the flat conductor is completely inserted, the elastic clamp buckle part is automatically reset to buckle the flat conductor, or the clamp buckle part is firstly propped by a tool during the assembly, the tool is removed after the flat conductor is completely inserted, and the elastic clamp buckle part is automatically reset to buckle the flat conductor. The electric connector has the advantages that the structure is simple, the manufacture is easy, the assembly is convenient and fast, and the production efficiency and the product quality are effectively improved.

The invention relates to a disposable pelvic floor biofeedback electrode insertion part. The electrode insertion part comprises a shell, an electrode block, a shielding body, an adjusting body, a wire interface and a wire; a thermoplastic elastomer is adopted as the shell, the shell is provided with two windows which are arranged in a symmetric mode, and the electrode block is arranged in the windows; the electrode block is connected with the wire, and the adjusting body and the shielding body are arranged at the tail of the shell; the adjusting body is provided with a positioning line which is located in the axial direction of the adjusting body, and the positioning line is in accordance with the axial direction of the electrode block in a corresponding mode; the outer end of the adjusting body is provided with the wire interface, and the wire is connected in the wire interface. The disposable pelvic floor biofeedback electrode insertion part has the advantages of being low in cost, disposable in use, convenient to adjust, high in sensitivity, not prone to disengagement and precise in positioning.

The invention discloses an electric power pulley. The electric power pulley comprises a frame, the upper side of the inner part of the frame is pivoted to an upper pulley via a rotating shaft, the lower side of the outer part of the frame is provided with a lower pulley, a left side plate of the frame is provided with an opening for allowing a cable to pass through, the outer part of the frame is clamped with a U-shaped baffle, the lower part of a left side plate of the baffle is matched with the opening, the middle part of the baffle is hinged to the upper part of the frame via the rotating shaft, a vertical chute is positioned below the rotating shaft and arranged on a right side plate of the frame, a clamping shaft is arranged in the chute in a sliding manner, a first tension spring is connected between the inner end of the clamping shaft and the lower part of the frame, the lower part of a right side plate of the baffle is provided with an arc guide groove, the lower side of the inner end of the guide groove is provided with a blocking hole, the blocking hole is matched with the clamping shaft, and a second tension spring is arranged between an upper side plate of the baffle and an upper side plate of the frame. The electric power pulley is advantaged by simple operation and stable work.

The invention discloses an aluminum radiator of an improved riveting-embedding structure and a riveting method. After a riveting-embedding portion of each radiating aluminum fin is subjected to surface activation treatment, a nonporous solid blocking layer and a porous viscidity layer are attached to the surface of the riveting-embedding portion; after riveting-embedding grooves of an aluminum substrate are subjected to surface activation treatment, an aluminum oxide passivating film layer is attached to the surface of each riveting-embedding groove; and the riveting-embedding portions are in interference fit with the riveting-embedding grooves after riveting-pressing machining is conducted, clearances formed between the riveting-embedding portions and the riveting-embedding grooves are filled with the porous viscidity layers of the riveting-embedding portions after riveting-pressing deformation, and the porous viscidity layers of the riveting-embedding portions are in engaging fit with the aluminum oxide passivating film layers of the riveting-embedding grooves. According to the aluminum radiator of the improved riveting-embedding structure and the riveting method, the process is simple, riveting is firm, structure loosing or falling is not prone to occurring, and the heat conduction speed at the riveting joint is high.

A target material component and a preparation method thereof are disclosed, the target material component is provided with a sputtering surface and a sealing surface surrounding the sputtering surface, a seal groove is arranged on the sealing surface of the target material component, and is used for accommodating a sealing part, and the dimension of the widest position of the inside of the seal groove is larger than the dimension of the opening of the seal groove. When the sealing part with the dimension larger than the dimension of the opening of the seal groove is put into the seal groove, the sealing part is clamped in the opening of the seal groove, the sealing part is not easy to remove from the seal groove, and the vacuum degree of the target material component in a deposition chamber can be effectively improved. The preparation method of the target material component can be used for making the target material component.

The invention discloses a heat exchange tube fixing device, belongs to the technical field of heat exchange tubes, and provides a heat exchange tube fixing device for a heat exchange tube impact wearexperimental device. The heat exchange tube fixing device comprises side plates, heat exchange tubes, shaft seats, central shafts and locking devices, wherein rectangular through grooves are formed ineach side plate, upper shaft seats and lower shaft seats are arranged in a sliding mode to be connected with the side plates, the height position of the heat exchange tubes is adjusted by adjusting the upper positions and the lower positions of the upper shaft seats and the lower shaft seats, the maximum line contact length between the two heat exchange tubes is guaranteed, and non-round gasketsare adopted, so that it is ensured that the pretightening force exerted by nuts is transmitted to the heat exchange tubes, the contact between every two corresponding gaskets can be avoided, and the heat exchange tube fixing device has the advantages of conveniently adjusting the horizontal height and not influencing experimental operation.