803 results about "Protective barrier" patented technology

The invention relates to the field of building construction, in particular to a foldable guardrail used in an elevator shaft and a using method thereof.The foldable guardrail comprises a mounting frame matched with an elevator door opening in shape, a pedal is hinged to a cross beam at the bottom of the mounting frame, and a stay cable is connected between the upper portion of the mounting frame and the upper portion of the pedal; the length of the stay cable ensures that the pedal can be laid flat and tensioned, a sideboard is transversely arranged in the installation frame, a protective barrier is hinged to a vertical beam on one side of the installation frame, and the protective barrier is matched with the area on the lower side of the sideboard in the installation frame. The whole structure is simple, is a single component and is easy to mount and dismount; the protective barrier can only be opened outwards, so that the potential safety hazard that personnel fall into the elevator shaft due to accidental impact can be effectively avoided, and the requirement of entering and exiting the elevator shaft can be met; after the foldable guardrail is put into use in a building, the foldable guardrail can also be arranged in an elevator shaft to be used as a temporary platform for an equipment maintenance platform in the elevator shaft.

The invention discloses a preparation method of rhizoma polygonati exosome microcapsules, and belongs to the technical field of biology, the rhizoma polygonati exosome microcapsules are prepared by four steps of crude extraction of rhizoma polygonati exosome, purification of the rhizoma polygonati exosome, preparation of rhizoma polygonati exosome freeze-dried powder and preparation of the rhizoma polygonati exosome microcapsules. The rhizoma polygonati exosome is wrapped in the tiny vesicles formed by the high polymer material, so that the external environment is effectively isolated, a protective barrier is provided for the exosome, the exosome is prevented from being degraded or inactivated in the external environment, and the stability of the exosome is improved; meanwhile, the polygonatum kingianum exosome can be prevented from being subjected to in-vivo enzymolysis and clearing through micro-capsule wrapping, the in-vivo residence time of the polygonatum kingianum exosome is prolonged, and the bioavailability is improved; the preparation process is simple, the operability is high, and the prepared exosome microcapsule has good application in the aspect of inhibiting gastric cancer cells.

The invention relates to the technical field of metal surface engineering, and discloses a laser cladding layer based on copper-magnesium-titanium-zirconium gradient design and a preparation method thereof.The preparation method comprises gradient structure design, a microstructure strengthening mechanism, a laser cladding process and thermal field control. By constructing a copper-magnesium-titanium component gradient transition structure and matching the thermal expansion coefficient difference between a matrix and a coating in real time, interface thermal stress accumulation can be dynamically inhibited, the crack defect caused by thermal expansion mismatch of a traditional cladding layer is avoided, ordered diffusion of elements at the interface is promoted through gradual change of gradient components, and the thermal conductivity of the cladding layer is improved. The metallurgical bonding reliability of the coating and a base body is improved, meanwhile, a stable coating is formed, the long-term service stability under the extreme working condition is guaranteed, a microstructure strengthening mechanism regulation and control means is adopted, the coating has a stable and effective protective barrier in a corrosive medium environment, and the problem of performance degradation caused by structure defects of a traditional cladding layer is solved.

Examples of devices for providing cooling solutions are described. One example device includes a boilerplate, a printed circuit board (PCB), one or more integrated circuit (IC) chips placed on the PCB, a thermal interface material (TIM), and one or more gaskets. The TIM is placed between the boilerplate and at least one IC chip of the one or more IC chips. The TIM is coupled to a surface of at least the IC chip that faces the boilerplate. The one or more gaskets are placed between the boilerplate and the PCB and encompassing the TIM. The one or more gaskets are configured to seal the at least one IC chip to provide a protective barrier for the TIM.

A pre-assembled insulated weld backing ring for a tubular section of the pipeline. The weld backing ring includes a metal cylinder and an insulation layer. The metal cylinder has a ring-shaped anterior portion and a ring-shaped raised posterior portion with a step therebetween. The posterior portion has a larger diameter than the anterior portion to define an insulation pocket. The insulation layer is positioned on the external surface of the metal cylinder. The insulation layer is made of an insulated material positioned in the insulation pocket to define a protective barrier to protect the tubular section during welding. The weld backing ring may also include a second metal cylinder positioned on the insulation layer. The weld backing ring may be pre-assembled by applying a tubular metal section material to a sheet of metal and rolling the sheet of metal to form the metal cylinder.

The utility model discloses a water conservancy project anti-scour ecological dam which comprises an ecological dam body and an anti-scour mechanism, the anti-scour mechanism comprises a plurality of partition plates, and a polygonal building structure formed by stacking a plurality of regular hexagonal prism gabion nets is arranged on one side between any two adjacent partition plates. A plurality of mounting holes are formed in one side of each partition plate, and a riprap filling layer is arranged in an enclosure structure formed by the multiple polygonal building structures matched with the two adjacent partition plates and the slope toe of the ecological dam body. According to the anti-scouring ecological dam for the water conservancy project, the regular hexagonal prism gabion net is used for replacing an existing gabion net for construction of a protective barrier, a multilateral construction structure can be built, a scoured face of a polyhedral structure can be formed, the bearing area is increased, and by cooperation with side face supporting of the partition plates and rear supporting of the riprap filling layer, the anti-scouring ecological dam is more stable in performance. The stability of the protection structure is effectively improved, and the collapse probability is reduced.

A protector for a railway car interior, such as an autorack car designed to transport automobiles. The protector is installed on and covers the sidewall of a railway car to provide a barrier between the car and the sidewall to prevent damage to automobiles being transported in the rail car. The protector has two bumpers that are connected to a body and are deflectable to provide expanded zones of protection when contacted by an object. The protector may be provided in different lengths to provide a suitable span of coverage of a railway interior structure when the protectors are arranged adjacently, horizontally along a sidewall of the rail car at suitable heights to provide protection. The outwardly projecting bumpers provide a protective barrier between the automobile, such as a door panel, and the railway sidewall or other structure. A railcar configured with protectors also is provided.

A protective barrier affixable to a curved substrate comprises a stack of two or more lenses, each of the two or more lenses including a polyethylene terephthalate (PET) film, a hard coat on a first side of the PET film, and an adhesive layer on a second side of the PET film opposite the first side. The stack of two or more lenses may have a modulation transfer function that exhibits a contrast value greater than 75% for a spatial resolution of one line-pair per 0.0003 radians at 65 degrees angle of incidence. Heat and pressure may be applied to conform the stack of two or more lenses to the shape of the curved substrate.

A protector for a railway car interior, such as an autorack car designed to transport automobiles. The protector is installed on and covers the sidewall of a railway car to provide a barrier between the car and the sidewall to prevent damage to automobiles being transported in the rail car. The protector has two flanges that extend outward of the body and are deflectable to provide an expanded zone of protection when contacted by an object. The protector may be provided in different lengths to provide a suitable span of coverage of a railway interior structure when the protectors are arranged adjacently, horizontally along a sidewall of the rail car at suitable heights to provide protection. The outwardly projecting flanges provide a protective barrier between the automobile, such as a door panel, and the railway sidewall or other structure. A railcar configured with protectors also is provided.

The tunneling and anchoring all-in-one machine shield system comprises a shield mechanism, the shield mechanism comprises a main frame body, a sliding top plate and a front probing piece, the sliding top plate is in sliding connection with the main frame body, and the front probing piece is used for driving the sliding top plate to move front and back; the sliding frame assembly is arranged between the main frame body and the sliding top plate, and the sliding frame assembly is in sliding connection with the sliding top plate; the wing ceiling assemblies are arranged on the two sides of the sliding top plate; the top end of the temporary supporting piece is connected with the left end and the right end of the sliding frame assembly, and the temporary supporting piece is telescopic; the top end of the supporting rod assembly is connected with the left side and the right side of the main frame body. The shield system can be arranged on the tunneling and anchoring integrated machine, the sliding top plate and the wing-unfolding ceiling assembly can stretch into an unsupported empty roof area in front of a tunneling working face in advance to form a temporary protection barrier, zero-empty-roof-distance advance supporting operation of a tunneling head-on is achieved, adaptability and reliability of underground tunneling operation to top plate control are improved, and the construction period is shortened. And safe and efficient operation of tunneling operation is ensured.

The invention relates to the technical field of transport vehicles, and discloses a new energy container transport semitrailer which comprises a semitrailer body and a container body hoisted above the semitrailer body. Two main beams are installed on the semi-trailer body, a plurality of cross beams are installed between the two main beams, loading blocks are installed in the cross beams, two inserting grooves are symmetrically formed in each loading block, a plurality of sets of inclined blocks are installed at the bottom of the box body, and each set of inclined blocks correspond to the two inserting grooves in the corresponding loading block. And two clamping pushing assemblies are arranged in the cross beam. The inclined blocks are matched with the protection assemblies, the clamping blocks and the limiting assemblies, guiding, fixing and limiting are achieved when the box body is hoisted and moves downwards, the lateral restraining force and the connecting strength are enhanced, the electromagnets are used for fixing the two sides of the bottom of the box body, the weight is evenly distributed, the main beam deformation risk is reduced, the pull ropes are matched with the protection assemblies to form a protection barrier, and safety is improved; the inclined block design avoids direct contact between the box body and the ground, and the service life is prolonged.

A protective barrier affixable to a curved substrate comprises a stack of two or more lenses, each of the two or more lenses including a polyethylene terephthalate (PET) film, a hard coat on a first side of the PET film, and an adhesive layer on a second side of the PET film opposite the first side. The stack of two or more lenses may have a modulation transfer function that exhibits a contrast value greater than 75% for a spatial resolution of one line-pair per 0.0003 radians at 65 degrees angle of incidence. Heat and pressure may be applied to conform the stack of two or more lenses to the shape of the curved substrate.

Methods for preventing contamination of an endoscope may include coupling a sheath device to cover both the inside and outside of the endoscope. The sheath device may include a rigidizing flexible tubular external sheath that extends over the endoscope to form an external protective barrier, a tubular internal sheath that extends within a lumen of the endoscope that forms an internal protective barrier, and a cap sealed to both the external sheath and the internal sheath. The sheath may be rigidized to enhance insertion.

A method of lubricating a fluid production pump may include mixing a polarized lubricant with water to produce a diluted lubricant. The method may additionally include creating a flowpath within the fluid production pump. An initial volume of the diluted lubricant may be circulated within the flowpath to allow the diluted lubricant to react with components of the fluid production pump and form a protective barrier on the components of the fluid production pump. The method may further comprise repeatedly introducing a periodic volume of diluted lubricant into the fluid production pump according to a predefined lubrication schedule.

A method of lubricating a fluid production pump may include mixing a polarized lubricant with water to produce a diluted lubricant. The method may additionally include creating a flowpath within the fluid production pump. An initial volume of the diluted lubricant may be circulated within the flowpath to allow the diluted lubricant to react with components of the fluid production pump and form a protective barrier on the components of the fluid production pump. The method may further comprise repeatedly introducing a periodic volume of diluted lubricant into the fluid production pump according to a predefined lubrication schedule.

The invention relates to a supporting platform device for construction in a tunnel, a plurality of rectangular steel pipes are spliced and built into a supporting frame through prefabricated connecting pieces, a grid type walkway plate is laid on the supporting frame, and a detachable protective barrier is installed on the edge of the grid type walkway plate; the detachable protective handrails of the grid type walkway plate are connected with the supporting frame through buckles; adjustable supporting legs are arranged at the bottom of the supporting frame. According to the supporting platform device for construction in the tunnel, through organic combination and innovative design of the rectangular steel pipes, the connecting pieces and the grid type walkway plates, high strength and high stability of the device are guaranteed, and meanwhile the functions of rapid building, flexible adjustment, safety and reliability are achieved; the device has the remarkable advantages of being simple in structure, convenient and fast to install, low in cost, high in applicability and the like, can be widely applied to the construction process of various tunnel projects, provides powerful guarantee for efficient and safe tunnel construction, and has wide market application prospects and remarkable social and economic benefits.

The invention relates to the technical field of anti-aging coatings, in particular to a tire anti-aging coating and a preparation method thereof. According to the invention, the problems of poor adhesive force and poor aging resistance of a tire coating are solved; through the synergistic effect of the epoxy polysiloxane and the waterborne polyurethane-acrylate copolymer emulsion, multi-stage bonding of a tire / coating interface is realized, and the added fluorosilicone block copolymer can further form a protective barrier; by preparing modified nano silicon dioxide, active groups grafted by a silane coupling agent on the surface capture free radicals, and an oxidation chain reaction is blocked; n, N '-diphenyl-p-phenylenediamine released by the polyurea microcapsules can remove free radicals generated by oxidation in the coating, and the N, N'-diphenyl-p-phenylenediamine is matched with the compound light stabilizer to form a dynamic defense chain; a flexible long chain of the polycaprolactone polyol inhibits crack propagation through free volume filling, and the four components synergistically improve ultraviolet resistance, ozone resistance and oxidation corrosion resistance; and through a staged low temperature-medium temperature-high temperature gradient curing strategy, the adhesive force of the coating is improved.

The invention discloses an alkali-reducing protective agent for a reinforced cement-based cementing material for basalt fibers and application of the alkali-reducing protective agent, and belongs to the technical field of building materials. The alkali-reducing protective agent is prepared from the following raw materials in percentage by weight: 20 to 40 weight percent of active silicon dioxide aerogel, 15 to 30 weight percent of metakaolin, 10 to 25 weight percent of lithium slag powder, 5 to 15 weight percent of nano calcium carbonate, 3 to 8 weight percent of redispersible latex powder, 1 to 5 weight percent of water reducing agent and 0.5 to 2 weight percent of retarder. The invention also discloses an application of the alkali-reducing protective agent in a cement cementing material. According to the invention, the alkalinity of a set cement hole solution around the basalt fiber can be efficiently and enduringly reduced, physical and chemical dual protection barriers are formed on the surface of the basalt fiber, the alkali corrosion of the fiber is obviously delayed, and the long-term durability and enhancement efficiency of the basalt fiber are greatly improved.

The invention provides air purification equipment applied to wafer detection and a wafer detection system.The air purification equipment comprises a rack and an air supply part, an outer protection cavity, a light path cavity and a detection cavity are formed in the rack, the light path cavity and the detection cavity are formed in the outer protection cavity, and the air supply part communicates with the outer protection cavity, the light path cavity and the detection cavity; the air pressure in the detection cavity is greater than the air pressure in the light path cavity, and the air pressure in the light path cavity is greater than the air pressure in the outer protection cavity. The light path cavity and the detection cavity are arranged in the outer protection cavity, and a gradient air pressure system in which the air pressure of the detection cavity is higher than that of the light path cavity and the air pressure of the light path cavity is higher than that of the outer protection cavity is constructed, so that multiple protection barriers are formed, external pollutants are effectively prevented from invading a core working area, and the cleanliness control effect is improved; and the requirement of nanoscale wafer detection on the environment is met.

Protective devices, methods and systems for installation on a railway car interior, such as an autorack car designed to transport automobiles. The protector covers structures of the railway car that could potentially damage the automobiles being transported. The protectors may be provided in different lengths to provide a suitable span of coverage of a railway interior structure. The protector has a body with a beaded segment that provides a protective barrier between the automobile, such as its door, and the railway post or other structure. The protectors can be mounted with fasteners or may include integral fastening elements for self-mounting to the railcar. The protector may be formed by assembling together a plurality of sections to provide a protector having a desired length for the installation location. Self-connecting features may be provided on the protector sections for assembly of the protector sections without the need for tools or other equipment.

The utility model belongs to the technical field of protective guards, and discloses a height-adjustable stainless steel protective barrier which comprises a first supporting rod and a second supporting rod, a first movable rod is arranged in the first supporting rod, a second movable rod is arranged in the second supporting rod, and a top plate is fixedly installed on the top of the first movable rod and the top of the second movable rod. A bottom plate is fixedly installed between the first movable rod and the second movable rod, a supporting assembly is arranged in the bottom plate, splicing assemblies are arranged on the side faces of the first supporting rod and the second supporting rod and comprise connecting frames and connecting inserting blocks, the connecting frames are fixedly installed on the side face of the second supporting rod, and the connecting inserting blocks are fixedly installed on the side face of the first supporting rod. According to the protective fence, two protective fences can be combined and spliced through the splicing assembly, so that the protective fence can surround a construction site with a longer distance, and compared with the protective fence assembled through fixing bolts, the protective fence is more convenient and faster to assemble.

The invention provides a tailored blank laser welding device for a car body panel production line, and relates to the technical field of tailored blank laser welding devices. A mounting part is arranged outside the external connecting part; a cleaning part is arranged outside the mounting part; a gun protection part is arranged outside the mounting part; a welding part is arranged in the gun protection part; when the welding head retracts, the six outwards-turned plastic plates fixedly connected with the inner wall can be rapidly closed to form a tight protective barrier, external impurities are effectively prevented from being attached to the welding head, interference of the impurities on laser transmission, focusing and other performance is avoided, the service life of the welding head is greatly prolonged, and the problem that in the continuous machining process, the welding head cannot be damaged easily is solved. The problems that due to the fact that a laser gun head is exposed in the machining environment for a long time, metal splashes, smoke dust and other impurities generated by welding are easily adsorbed, the laser energy transmission efficiency can be reduced through the impurities, the performance of the gun head is degraded, and even faults are caused are solved.

A method of lubricating a fluid production pump may include mixing a polarized lubricant with water to produce a diluted lubricant. The method may additionally include creating a flowpath within the fluid production pump. An initial volume of the diluted lubricant may be circulated within the flowpath to allow the diluted lubricant to react with components of the fluid production pump and form a protective barrier on the components of the fluid production pump. The method may further comprise repeatedly introducing a periodic volume of diluted lubricant into the fluid production pump according to a predefined lubrication schedule.

There is provided a medicament delivery device comprising: a main body arranged to receive a medicament cartridge; a needle for delivery of medicament from the medicament cartridge; a needle cover moveable between an initial position, in which the needle cover covers the needle, and an activated position for dispensing medicament from the medicament delivery device, wherein in the activated position the needle protrudes from a distal end of the needle cover; an outer frame, moveable relative to the main body between an extended position in which the outer frame extends past a distal end of the needle, and a retracted position in which the outer frame is moved towards the main body; an attachment element comprising an adhesive region for attaching the medicament delivery device to a surface when the needle cover is in the activated position, the attachment element comprising a protective barrier covering the adhesive region.

The utility model discloses a polyurethane watertight photoelectric composite cable, and relates to the technical field of watertight photoelectric composite cables. The composite cable comprises the outer sheath, the inner sheath, the optical fiber unit and the power line, the inner sheath is arranged in the outer sheath, the overall use strength of the composite cable is improved through the outer sheath and the inner sheath, and the armor layer is arranged between the outer sheath and the inner sheath, so that even if the outer sheath is broken, the optical fiber unit can be prevented from being damaged, and the service life of the composite cable is prolonged. The inner sheath is protected through the armor layer, the first water-blocking tape is made of a material formed by compounding polyester fibers and a high-water-absorption material after meeting water, and when water enters a cable port using the water-blocking tape, high-water-absorption powder or a water-swelling material contained in the water-blocking tape can absorb the water through the water absorption performance of the high-water-absorption powder or the water-swelling material. And the water-blocking tape expands to become gel to form a protective barrier for preventing water from flowing, namely, the protective barrier performs waterproof protection between the broken part of the outer sheath and the armor layer.

Protective devices, methods and systems for installation on a railway car interior, such as an autorack car designed to transport automobiles. The protector covers structures of the railway car that could potentially damage the automobiles being transported. The protectors may be provided in different lengths to provide a suitable span of coverage of a railway interior structure. The protector has a body with a beaded segment that provides a protective barrier between the automobile, such as its door, and the railway post or other structure. The protectors can be mounted with fasteners or may include integral fastening elements for self-mounting to the railcar. The protector may be formed by assembling together a plurality of sections to provide a protector having a desired length for the installation location. Self-connecting features may be provided on the protector sections for assembly of the protector sections without the need for tools or other equipment.

The invention relates to the field of cables, and discloses a high-voltage fire-resistant cable, which comprises an outer layer, a skeleton structure is arranged in the outer layer, a plurality of groups of wire cores are arranged between the skeleton structure and the outer layer at equal intervals, and a reinforcing core is arranged in the skeleton structure. A middle fireproof layer adopts a ceramic silicone rubber composite system (containing 25 parts of phlogopite, 8 parts of nanometer aluminum oxide and a ceramic accelerant) with an optimized proportion, a hard protective shell with the density being larger than or equal to 1.8 g / cm < 3 > can be rapidly ceramized at the temperature of 320 DEG C, the synergistic flame-retardant effect of surface layer high-flame-retardant PVC (the oxygen index is 32) is matched, and the flame-retardant effect is good; the cable can continuously block heat permeation in flame of 950-1000 DEG C for 180 minutes, the temperature of the inner layer is stably controlled to be below 180 DEG C and is far lower than the insulation tolerance limit of a cable core, the pain point of'rapid failure in fire 'of a traditional cable is thoroughly solved, and golden rescue time is won for power emergency guarantee in key scenes such as high-rise buildings and subway tunnels.

The invention discloses a modular hot cell, and relates to the technical field of radiation experiments. The hot cell comprises: a base; a shielding body, wherein the shielding body is arranged on the base; the shielding body is arranged on the base, the shell is arranged on the base, and the shell is located in the shielding body; part of the passing assembly is arranged on the shielding body, and part of the passing assembly is arranged on the shell; a part of the observation assembly is arranged on the shielding body, and a part of the observation assembly is arranged on the shell. According to the modularized hot chamber, through the modularized splicing structure of the base, the shielding body and the shell, the construction efficiency of the hot chamber is remarkably improved, the nested design of the shielding body and the shell forms a multiple radiation protection barrier, and the radiation leakage amount is controlled to be at an extremely low level while the operation visibility of personnel is guaranteed. According to the invention, a user can inspect the damaged fuel element at the first time, and the efficiency and reliability of fuel element damage inspection and analysis are improved.

The invention discloses a flexible wear-resistant charging cable, and relates to the technical field of charging cables. The first cable protection section and the second cable protection section both wrap the outer surface of the cable main core, the first cable protection section and the second cable protection section are fixedly connected through a connecting leather sheath, and the outer surface of the first cable protection section is sleeved with an anti-abrasion wrapping layer used for increasing abrasion resistance. The upper surface of the second cable protection section is sleeved with an upper wrapping layer with the same function as the anti-abrasion wrapping layer. The silica gel folding-resistant strips are fixedly connected to the inner wall of the first protection section of the cable, the surface of the second protection section of the cable is provided with a wear-resistant assembly, and the silica gel folding-resistant strips are annularly distributed along the inner wall of the first protection section of the cable at equal intervals, so that fatigue fracture caused by local stress concentration is avoided; the upper wrapping layer and the lower wrapping layer respectively resist upper scraping and lower friction to form a bidirectional protective barrier, the wear-resistant blocks on the surface of the lower wrapping layer prevent the sheath layer from directly contacting with the ground, and the service life of the sheath is prolonged.

The disclosure is directed to a sports enclosure to allow a golfer or other athlete to practice hitting a ball, puck or other object indoors. The sports enclosure includes an upper frame that is configured to be suspended from a building structure. The enclosure also includes a lower frame that is spaced apart from the upper frame during use of the enclosure. Also included is a protective barrier material in the form of netting that extends between the upper frame and the lower frame to prevent objects from exiting the enclosure. The enclosure further includes an impact screen that extends between the upper and lower frames that is aimed at by a user. The enclosure includes a hoist mechanism that is configured to selectively raise the lower frame from a first elevation to a second elevation to a storage position or lower the lower frame from the second elevation to the first elevation to a use position.