92results about How to "Strong and stable structure" patented technology

The invention discloses low-dielectric fluorine-containing silane modified polyimide and an application thereof. The structural formula of the low-dielectric fluorine-containing silane modified polyimide is # imgabs0 #; r1 is a fluorine-containing silane group; r2 is an aromatic anhydride group; aR is an aromatic group; and Ar'and Ar ''are one of phenoxy benzene groups or fluorine-containing biphenyl groups. The preparation method comprises the following steps: dissolving a hydroxyfluorene diamine compound, ether-containing polyamine and fluorine-containing polyamine in a polar organic solvent in an inert atmosphere, and then adding dianhydride and an end-capping reagent for condensation polymerization to obtain polyamide acid; the preparation method comprises the following steps: mixing polyamide acid, a water-carrying agent and fluorine-containing silane, and carrying out imidization reaction to obtain the low-dielectric fluorine-containing silane modified polyimide. The fluorine-containing silane polyimide prepared by the invention has a large-volume fluorenyl structure, flexible ether bonds, a silane structure and fluorine atoms with relatively high electronegativity, so that the prepared fluorine-containing silane polyimide has relatively low dielectric properties, and the processability of the polyimide and the solubility of the polyimide in various organic solvents are also improved.

The invention discloses an oxidized crosslinked asphalt coated resin hard carbon negative electrode material and a preparation method thereof. The preparation method comprises the following steps: S1, pre-treating resin to obtain a resin precursor; s2, performing mechanical pulverization, low-temperature pre-carbonization and airflow pulverization treatment on the resin precursor to obtain low-temperature pre-carbonized ground powder; s3, the low-temperature pre-carbonized ground powder is subjected to activation pore forming and high-temperature carbonization treatment, and resin hard carbon is obtained; s4, uniformly mixing the resin hard carbon and the asphalt to obtain a mixture; s5, performing asphalt melting coating and low-temperature oxidation cross-linking treatment on the mixture to obtain oxidation cross-linked asphalt coated resin hard carbon; s6, performing high-temperature carbonization treatment on the oxidized cross-linked asphalt coated resin hard carbon to obtain coated hard carbon; and S7, carrying out post-treatment on the coated hard carbon to obtain the oxidized crosslinked asphalt coated resin hard carbon negative electrode material. The oxidized cross-linked asphalt coated resin hard carbon negative electrode material has a relatively low specific surface area, and the first reversible capacity and the initial coulombic efficiency of a battery can be remarkably improved.

The utility model relates to the technical field of foot stands, in particular to a bicycle foot stand which comprises a foot stand body, a high-strength mechanism is arranged on the inner wall of the foot stand body, universal adjusting mechanisms are arranged on the surface of the foot stand body and the surface of an adjusting rod, and high-stability mechanisms are arranged on the surface of a connecting frame. According to the utility model, the foot stool can be suitable for bicycles with different heights when being used, the universality of the foot stool is stronger, the stability of the foot stool is higher when being used, the foot stool can support the bicycle more firmly when being used, the phenomenon that the bicycle topples over in the use process of the foot stool is avoided, and the service life of the foot stool is prolonged. And moreover, when the foot stool is used, the overall structure of the foot stool body is stronger, the bearing capacity for a bicycle is stronger, the phenomenon that the foot stool is bent and damaged in the using process is avoided, and the foot stool is more durable.

The invention relates to the technical field of cosmetics, in particular to the field of IPCA61K8, and more particularly relates to an ECM protein composition with anti-wrinkle, firming, repairing and moisturizing effects and application thereof. The composition is prepared from collagen, second protein and sodium coralate. The weight ratio of the collagen to the second protein to the sodium currate is (1-5): (10-25): (1-5), and the anti-wrinkle, firming, repairing, soothing and moisturizing mask has good permeability and has excellent anti-wrinkle, firming, repairing, soothing and moisturizing effects.

The invention belongs to the technical field of sulfur recovery, and particularly relates to an organic sulfur hydrolysis synergistic sulfur recovery catalyst as well as a preparation method and application thereof. Comprising the following steps: (1) dissolving strontium salt; (2) adding transition metal salt; (3) adding a titanium source; (4) adding an alkali metal compound; (5) stirring reaction; (6) hydro-thermal treatment; and (7) centrifuging, washing, drying and roasting. The general formula of the prepared catalyst is SrTi (1-x) MxO3, in the formula, x is equal to 0.05-0.2, and M is a transition metal element. The prepared catalyst is high in material composition and structure adjustability, rich in surface acid-base sites, excellent in organic sulfur hydrolysis reaction activity and H2S selective oxidation activity, and capable of realizing efficient and synergistic proceeding of organic sulfur hydrolysis and H2S selective oxidation and removing sulfur-containing components in process gas in one step.

The invention provides a composite structure bridge system based on steel and concrete and a construction method. A composite beam comprises a bridge deck slab and a composite rib plate located on the bottom face of the bridge deck slab, the composite rib plate comprises a concrete rib plate and a steel beam, and the concrete rib plate is located between the bridge deck slab and the steel beam; the standard simply supported beam comprises a plurality of composite beams arranged in the longitudinal bridge direction, and the adjacent composite beams are connected through inter-beam connecting structures. The standard simply-supported unit comprises a plurality of standard simply-supported beams arranged in the transverse bridge direction, and every two adjacent standard simply-supported beams are connected through a longitudinal wet joint; every two adjacent standard simply-supported units are connected through a pier top connecting structure to form a continuous structure system. The problem of how to quickly splice the composite beams on site to form a bridge structure system is solved, the composite beams can be prefabricated in sections and transported by a conventional expressway, centralized prefabrication and large-radius logistics distribution of the composite beams in a factory can be realized, and the commercialization circulation process of the small and medium span composite beams is promoted.

The utility model relates to the technical field of deep sea net cages, and provides an easy-to-clean anti-storm marine ranch deep sea net cage which comprises an outer fixing frame and an aquaculture net cage, the outer fixing frame is composed of an upper fixing ring, a lower fixing ring, four vertical supports distributed between the upper fixing ring and the lower fixing ring and a cross-shaped installation frame installed in the lower fixing ring, the aquaculture net cage is clamped in the whole outer fixing frame in an up-down sliding mode, and a net cage position adjusting mechanism is installed in the outer fixing frame. A floating assembly used for lifting the upper half portion of the outer fixing frame to the position above the horizontal plane is installed on the outer side of the outer fixing frame. The anti-storm marine ranch deep sea net cage easy to clean up not only improves the breeding efficiency and the management level, but also can achieve resource saving and environmental protection on the premise of guaranteeing safety, and is an innovation and progress in the field of marine breeding.

The utility model relates to the technical field of municipal construction accessories discloses a protection device for pipeline construction anti -collision, including longitudinal steel pipe, circular arc steel pipe, multidirectional pulley, anti -collision steel strip and oblique steel pipe, the longitudinal steel pipe has many, many longitudinal steel pipes are parallel to the length direction of pipeline, at least two longitudinal steel pipes are opposite other and are located downside, and its bottom is provided with multidirectional pulley, at least one longitudinal steel pipe is opposite other and is located upside, and it connects two longitudinal steel pipes with pulley through oblique steel pipe, two longitudinal steel pipes with pulley are connected through circular arc steel pipe between, the longitudinal steel pipe or oblique steel pipe stretches out anti -collision steel strip outward, the utility model aims at providing more effective, reliable and economic and practical anti -collision solution for pipeline construction.

The utility model discloses a cooling device for a converter flue oxygen lance opening, which belongs to the technical field of converter equipment and comprises a shell, a plurality of water inlet runners and a plurality of water outlet runners. A water inlet header and a water outlet header are annularly arranged on the periphery of the shell, and a communicating box is annularly arranged at the inclined opening end of the shell. The multiple water inlet flow channels are arranged in the circumferential direction of the shell and located in the side, close to the inner wall, of the shell. The multiple water outlet flow channels are arranged in the circumferential direction of the shell and located in the side, close to the outer wall, of the shell. As the water inlet runner, the water outlet runner and the shell are formed by integral casting, the oxygen lance opening has few structural weak parts, and the oxygen lance opening is strong in integral structure and is not easily damaged by external impact. The water inlet runner and the water outlet runner are separated in the inner wall and the outer wall of the shell respectively, so that the overall cooling uniformity of the oxygen lance opening is high, a heat concentration area is avoided, the structure of the oxygen lance opening is effectively protected, the service life of the oxygen lance opening is remarkably prolonged, and the maintenance rate is reduced.

The utility model discloses a kind of turnover strip-shaped concrete reverse ridge template fixing devices, belong to building construction equipment technical field, including handle, the handle below is provided with connecting sleeve, the connecting sleeve both sides are connected with one root horizontal support rod respectively, connecting sleeve with The horizontal support rod is connected through thread between the two, the horizontal support rod is connected with two oblique support rods away from connecting sleeve end, and the oblique support rod between same side is connected with longitudinal support rod.The utility model uses above-mentioned one kind of turnover strip-shaped concrete reverse ridge template fixing device, by the welding assembly of several support rods, cooperate sleeve and handle, the convenient material taking and quick production of fixed device production are realized, improve work efficiency, save construction cost.

The vamp with the protective property and the air permeability comprises a vamp body, a plurality of TPU yarns are woven in an interweaving mode to form at least one TPU yarn arrangement layer, the TPU yarns are fixedly connected at the overlapping position in a hot melting press fit mode, and the TPU yarns are arranged on the vamp body. Breathable winding gaps are formed among the woven TPU yarns; a protective layer is compounded on the side, close to the foot, of the vamp body, the protective layer is formed by weaving materials with puncture resistance and cutting resistance, and the protective layer is provided with a breathable grid structure. According to the vamp with the protective property and the air permeability and the shoe, the vamp material with the protective property and the air permeability is adopted for the shoe, the effects of being simple in structure, good in air permeability and having the protective function are achieved, and safe, comfortable and healthy wearing experience is provided for a wearer.

The present invention provides a conveyor belt device with a cooling function, comprising a main frame and a sub-frame, the rear end of the sub-frame is hingedly assembled with the main frame through a first hinge shaft, the two ends of the main frame are equipped with a first driving gear and a first driven gear through bearings, the upper ends of the legs of the main frame are equipped with a first limiting gear and a second limiting gear through bearings, the first driving gear, the first driven gear, the first limiting gear and the second limiting gear are equipped with a first conveyor belt body, and the two ends of the sub-frame are provided with a second driving gear and a second driven gear. The present invention is provided with six groups of different structures, but the functions are the same, which are structures that facilitate material heat dissipation and cooling, have strong structural innovation and practicality, greatly improve the cooling effect of the material without affecting the material transmission efficiency, and are different from the existing conveyor belt devices with cooling function to a large extent.

The invention discloses a self-propelled conveyor and a chassis thereof. The chassis comprises a frame and two crawler devices, the frame is a multi-span frame and is provided with a lower-layer space for mounting a hydraulic system and an upper-layer space for mounting an electrical system; the two crawler belt devices are respectively arranged on the left side and the right side of the frame and drive the frame to walk and move. The chassis is designed to be composed of the frame and the two crawler belt devices and is matched with the frame to be a multi-span type frame, so that the installation height of the platform is effectively reduced to 800 mm from original 1200 mm and is reduced by 33%, the gravity center of the whole mechanism is obviously reduced, and the overall walking stability is greatly improved by reducing the gravity center of a conveyor which is a machine with the high gravity center. Compared with the prior art, the crawler trolley has the advantages that large shaking is avoided during walking, normal running is facilitated, meanwhile, a slewing bearing and a slewing platform are omitted, a mounting seat for mounting the slewing bearing on the crawler trolley is omitted, and the manufacturing cost is greatly reduced.

The utility model relates to the technical field of forging equipment, and provides a cone roller split mechanism and a ring rolling mill, the cone roller split mechanism comprises a rack, a rotating shaft, a connecting rod, a cone roller, a hydraulic nut and a fastener, the connecting rod penetrates through the rotating shaft; the conical roller and the hydraulic nut are oppositely arranged at the two ends of the connecting rod and are connected in a threaded screwing mode. The fastener is arranged on the hydraulic nut and used for limiting the stroke of the hydraulic nut. The conical roller and the hydraulic nut are arranged at the two ends of the connecting rod, so that the conical roller can be tensioned through the connecting rod by pressurizing the hydraulic nut, and the conical roller and the rotating shaft are fixed; meanwhile, the connecting rod is connected with the conical roller in a screwed mode through threads, the hydraulic nut serves as a pressurizing piece, the conical roller can be loosened after pressure relief, and therefore the conical roller can be disassembled conveniently, and the structure is simple; and the hydraulic nut of the structure is located on the outer side, overhauling and maintenance can be continued conveniently, and application convenience can be improved.

The invention discloses a preparation method and application of a cationic polyurethane / carboxyl carbon nanotube conductive composite foam, comprising the following steps: (1) preparing a cationic polyurethane; (2) mixing a cationic polyurethane and an inorganic salt by an organic solvent, drying to obtain a cationic polyurethane / inorganic salt composite elastomer, removing the inorganic salt by soaking in hot water to obtain a cationic polyurethane foam, and soaking the cationic polyurethane foam in an aqueous solution of carboxyl carbon nanotubes for a period of time, washing and drying to obtain a conductive composite foam. The cationic polyurethane of the invention comprises a hard segment structure having a cationic group and a soft segment structure with a strong polarity. By introducing a cationic group into the main chain structure of the hard segment, an electrostatic interaction is formed between the carboxyl carbon nanotubes, thereby promoting the binding ability between the nanofiller and the polyurethane foam. The porous structure of the foam improves the sensitivity of the assembled sensor within a small strain range, and is expected to be applied to the field of human motion detection.

The utility model discloses a left and right horizontal horizontal type hinged folding device, the left side support's front and back wall respectively correspond the left end of left front horizontal hinged piece, left rear horizontal hinged piece of hinged connection, and left front horizontal hinged piece, left rear horizontal hinged piece can only be relative to left side support front and back horizontal swing hinged, the right side support's front and back wall respectively hinged connection has the right end of right front horizontal hinged piece, right rear horizontal hinged piece, and right front horizontal hinged piece, right rear horizontal hinged piece can only be relative to right side support front and back horizontal swing hinged, the right end of left front horizontal hinged piece, left rear horizontal hinged piece is swing hinged with the left front end, left rear end of corresponding intermediate X shape horizontal hinged frame, and the left end of right front horizontal hinged piece, right rear horizontal hinged piece is swing hinged with the right front end, right rear end of corresponding intermediate X shape horizontal hinged frame, this product can left and right horizontal stretch and horizontal contract folding, and the good bearing capacity is stable in structure, and the structure is solid, and convenient operation.

This invention relates to the field of solid-state lithium metal battery technology, specifically to a lithium deposition redirection hybrid conductor layer, its preparation method, and a lithium metal battery. The hybrid conductor layer is disposed between a sulfide solid electrolyte layer and a negative electrode current collector, comprising an oxidized carbon-based conductive framework and an alloyed deposition acceptor component formed in situ by coordination and anchoring of oxygen-containing functional groups on the surface of the oxidized carbon-based conductive framework. The hybrid conductor layer forms an electron-damping lithium-ion exchange region near the sulfide solid electrolyte layer and an alloyed deposition acceptor region near the negative electrode current collector, allowing lithium metal to preferentially deposit on the side near the negative electrode current collector during charging. This reduces the risk of side dendrite growth, micro-short circuits, and physically irreversible lithium generation in the sulfide solid electrolyte, thereby improving the coulombic efficiency and cycle stability of the solid-state lithium metal battery.

The invention relates to the technical field of switchboards, in particular to a drawing return type switchboard structure which comprises a switchboard main cabinet and an external rack arranged on the side edge of the switchboard main cabinet. A switchboard carrying table is arranged on the carrying surface of the switchboard main cabinet, the switchboard carrying table is provided with a drawing part, the switchboard carrying table is further provided with a load circuit breaking piece and a load connecting piece, the drawing part is installed on the switchboard carrying table in a sliding mode, and the electric contact end of the load circuit breaking piece and the electric contact end of the load connecting piece are both in butt joint with an electric contact panel of the drawing part; the carrying surface of the distribution board main cabinet is also provided with an electric device installation frame, the electric device installation frame is provided with an electric device butt joint carrier, and the electric device butt joint carrier is slidably installed on the electric device installation frame and is in butt joint with the electric contact panel of the drawing part. According to the invention, flexible configuration of circuit connection is realized, so that the switchboard can adapt to various different electrical layout requirements.

The utility model discloses a treatment tray, which relates to the technical field of medical instruments and comprises a treatment tray body, a storage mechanism is arranged in the treatment tray body and comprises a sharp instrument box, the outer surface of the sharp instrument box is slidably connected with the inner wall of the treatment tray body, and a magnet is fixedly mounted on the inner bottom wall of the treatment tray body. The upper surface of the magnet makes contact with the bottom face of the sharp instrument box, the inner wall of the treatment plate body is slidably connected with a dirt box, an iodophor storage groove is formed in the upper surface of the treatment plate body, two storage grooves are formed in the upper surface of the treatment plate body, and a test tube rack is movably hinged to the back face of the treatment plate body. The inner wall of the treatment plate body is slidably connected with two supporting plates. Waste sharp instruments can be placed through the sharp instrument box, medical waste can be placed through the dirt box, and medicines and medical instruments can be placed through the storage groove, so that the medical waste, the medicines, the instruments and the like can be conveniently and separately placed, and the medicines and the instruments are prevented from being polluted.

According to the composite steel wire rope for mine hoisting and the manufacturing method of the composite steel wire rope, the center strand is made of the aramid fibers, meanwhile, the rope core strand formed by twisting the filaments formed by melting and drawing various high-strength fibers is twisted outside the center strand, and the strength and the tensile property of the composite rope core are greatly improved; and the high-toughness corrosion-resistant steel wire rope has good toughness and corrosion resistance, and is suitable for mine environments and high-load applications thereof. Meanwhile, a graphite fluoride coating is arranged outside the inner-layer strand, and a polytetrafluoroethylene coating is arranged outside the outer-layer strand, so that the friction among the inner-layer strand, the outer-layer strand, the filling strand and the special-shaped steel wires during use can be reduced, and the inner-layer strand and the outer-layer strand have excellent corrosion resistance; the inner-layer strands and the outer-layer strands can keep good performance in a severe environment; in addition, through filling of the filling strands and the special-shaped steel wires, the compactness of the steel wire rope is increased, the whole structure of the steel wire rope is firmer, tighter and more pressure-resistant, and the mechanical property of the steel wire rope is improved.

The utility model discloses a bioretention medium soil preparation system which comprises a gravity concentration device, a sludge plunger pump, a sludge conditioning device, a centrifugal dewatering system, a buffer storage bin, a belt type drying machine, a belt conveying system, a dry material bin and a sludge pelletizer, and an outlet of the gravity concentration device is communicated with an inlet of the sludge conditioning device through the sludge plunger pump. An outlet of the sludge conditioning device is communicated with an inlet of the centrifugal dewatering system, a sludge outlet of the centrifugal dewatering system is communicated with an inlet of the buffer stock bin, an outlet of the buffer stock bin is communicated with an inlet of the belt type drying machine, an outlet of the belt type drying machine is communicated with an inlet of the dry stock bin, and an outlet of the dry stock bin is connected with the sludge granulator. The bioretention medium soil preparation system disclosed by the utility model can effectively remove impurities in sludge water, and bioretention medium soil prepared by the system changes the physical and chemical properties of residual sludge and meets the requirements of resource utilization and deep dehydration; structural arrangement is reasonable, and production cost is low.

A structure for installing a suspension rod with adjustable length includes a suspension rod body, the suspension rod body includes a fixed-length tube, a snap assembly and an adjustment sleeve, the fixed-length tube is integrally formed with a first chamber and a second chamber that are close to each other, a mounting through hole is provided on the side wall of at least one end of the first chamber, a snap assembly is provided in the mounting through hole, at least one end of the fixed-length tube is sleeved with an adjustment sleeve, the adjustment sleeve is integrally formed with a first sleeve and a second sleeve that are interconnected, the first sleeve and the second sleeve are matched with the first chamber and the second chamber respectively, a plurality of telescopic positioning holes that match the snap assembly are provided on the side wall of the first sleeve, and a threading hole is provided at the end of the second sleeve away from the fixed-length tube. The present invention designs the suspension rod body as a double-chamber structure, one chamber cooperates with the snap to adjust the size, and the other chamber can pass through the wire to ensure that the wire is in the chamber, which can slow down the aging of the wire; the suspension rod body adopts a snap structure, so that the length of the suspension rod can be accurately adjusted.

The present invention relates to a large all-aluminum structure open aluminum plate curtain wall system, comprising a first aluminum alloy column, a first L-shaped aluminum angle, a second aluminum alloy column, a second L-shaped aluminum angle, a third L-shaped aluminum angle and a fourth L-shaped aluminum angle, and a fifth L-shaped aluminum angle, a first curtain wall public column, a first clamping piece, a second clamping piece, a first curtain wall female column, a second curtain wall public column, a perforated aluminum plate and a second curtain wall female column, which are fixedly connected in sequence. The large all-aluminum structure open aluminum plate curtain wall system has the advantages of strong structure, light weight, assembly production, easy installation, integral hoisting, improved corrosion resistance and weather resistance, environmental protection and no need for maintenance in the later stage.

The invention discloses a width-variable guide rail falling protector easy to disassemble and assemble. The guide rail falling protector is mainly applied to the field of high-altitude operation safety protection. Comprising a movable shell and a fixed shell which move relatively to change the width of the falling protector. The hanging handle is used for connecting external safety equipment; the fixed long shaft penetrates through the fixed shell, one end of the fixed long shaft extends out of a limiting area with a blocking step, and the movable shell penetrates through the limiting area. The sliding limiting device is installed in a groove of the fixed shell, switching between the working state and the non-working state of the falling protector and width adjustment are achieved, and the falling protector can be flexibly disassembled and rapidly installed in the middle of the guide rail. The falling protector is convenient and efficient to operate, and the operation procedures of installation, locking, unlocking and the like are simplified; the problem of midway disassembly of a traditional safety lock guide rail is solved; the structure is stable and durable and adapts to complex environments; the comprehensive cost and risk of high-altitude operation are effectively reduced, high-quality and comprehensive safety protection is provided for high-altitude operation personnel, and development of the high-altitude operation safety technology is promoted.

The utility model relates to laser cladding technical field, proposed light is in the coaxial powder feeding's laser cladding high accuracy closed -loop focusing device, including the cover head casing, the inside fixed connection of cover head casing has two parallelly arranged linear guide rails, the sliding connection of two linear guide rails has the sliding block, the bottom of sliding block is provided with the lens mount, the fixed plate on the bottom of sliding block is fixedly connected in lens mount, the inside of lens mount is provided with zoom lens group, the bottom of cover head casing is provided with the laser channel of the concentric setting with zoom lens group, the outside of cover head casing is provided with four powder feeding channels, four powder feeding channels surround laser channel and angle distribution, one end of lens mount is provided with the drive module for drive lens mount vertical activity. The utility model discloses through the transmission combination of ''stepping motor + ball screw + linear guide rail '' and laser displacement sensor closed loop feedback, positioning accuracy greatly promotes.

The utility model discloses a skirting line capable of being rapidly installed. The skirting line comprises an installation assembly and a buckling assembly. The installation assembly and the buckling assembly are connected in a matched and clamped mode. The mounting assembly is fixedly mounted on a wall body; the buckling assembly comprises a buckling plate, a first buckling part and a second buckling part, wherein the first buckling part and the second buckling part are assembled at the two ends of the buckling plate. The mounting assembly comprises a mounting plate, a supporting part and a mounting fixing part; the supporting part and the mounting fixing part are respectively fixed at the upper end and the lower end of the mounting plate; the upper surface of the mounting fixing part is vertically connected with a limiting part for clamping the first buckling part; a clamping part is arranged on the side, away from the wall body, of the mounting plate, and the supporting part and the clamping part form a clamping groove used for clamping the second buckling part; the device can be quickly, simply and conveniently mounted and dismounted, time and labor cost can be saved, the mounting plate and the fastening plate are simple in structure, and manufacturing cost and complexity are reduced.

The invention discloses a continuum wall-climbing robot with an integrated driving function, and aims to solve the problems of contradiction between adsorbability and maneuverability, complicated structure, weak wall surface transition capability and the like of the conventional wall-climbing robot. The continuum wall-climbing robot comprises a first adsorption unit, a second deformation body unit, a second connection set, a third walking unit, a control system and the like. The first adsorption unit comprises a first motor fixing assembly, a first connecting spring, a first electricity obtaining type electromagnet and a first electromagnet mounting frame, and the first electricity obtaining type electromagnet is arranged on the first electromagnet mounting frame. According to the wall-climbing robot, the continuum is adopted as the body of the wall-climbing robot, driving and control of the robot can be integrated, and therefore the motion performance of the wall-climbing robot is remarkably improved, and control over the robot is more efficient. Meanwhile, by adopting the structure of the invention, the device has more advantages in the aspects of operation, operation and the like, and has better flexibility.

The utility model discloses an anti-shake computer knapsack, which relates to the technical field of computer knapsacks and comprises a first main bag, a second main bag is arranged at the front end of the first main bag, an auxiliary bag is arranged on the outer surface of the second main bag, a first zipper strip is arranged between the first main bag and the second main bag, and a second zipper strip is arranged between the first main bag and the second main bag. A second zipper strip is arranged on the outer surface of the upper end of the auxiliary bag, and two sets of zipper pullers are arranged on the outer surface of the first zipper strip and the outer surface of the second zipper strip respectively. According to the anti-shaking computer backpack disclosed by the utility model, a notebook computer can be stored through the computer storage bag arranged in the first main bag, and a thickened cotton cushion is adopted in the computer storage bag, so that basic protection can be performed on the computer; through the supporting clamping plates on the two sides of the computer storage bag and the nylon fixing belt at the upper end, the computer storage bag has a better fixing effect on the computer, the computer is prevented from shaking greatly in the backpack, and the protection effect of the backpack on the computer is improved.

The utility model discloses aluminum profile cutting equipment, which belongs to the technical field of aluminum profile cutting and is characterized in that convex pipes are arranged at two ends of a worktable, a first sliding table and a second sliding table, the first sliding table and the second sliding table are distributed at two ends of the worktable, and the worktable, the first sliding table and the second sliding table are fixed on a sliding rod through limiting sleeves; positioning tables are installed at the upper ends of the workbench, the first sliding table and the second sliding table, positioning clamps for clamping the aluminum profile are installed at the upper ends of the positioning tables, and the cutting cutter head is adjusted to be aligned with the aluminum profile for cutting. According to the cutting equipment, the innovative design of the rotatable sliding rod and the sliding table is adopted, and a hand wheel is matched for control, so that a user can flexibly adjust the angle and the position of the cutting cutterhead, and the cutting requirements of aluminum profiles of different shapes and sizes are easily met. The equipment is provided with the positioning table and the positioning clamp, it is guaranteed that the aluminum profile is kept stable in the cutting process, a cutting line is accurate, and the cutting precision and efficiency are remarkably improved.