47results about How to "Adjustable size" patented technology

The present application relates to the technical field of gas hydrate, and particularly relates to a micro-nano capsule-based natural gas hydrate promoter and a preparation method and application thereof.The micro-nano capsule-based natural gas hydrate promoter of the present application comprises a micro-nano capsule and MOF crystals loaded on the surface of the micro-nano capsule.The micro-nano capsule-based natural gas hydrate promoter of the present application introduces porous material MOF crystals capable of adsorbing methane on the surface of the micro-nano capsule.The MOF crystals have high specific surface area and porous structure, good thermal stability and chemical stability, can provide more active sites for the formation of natural gas hydrate, can realize the preferential enrichment of methane molecules in the aqueous phase, enhance the consumption capacity of methane in the aqueous phase, further improve the capture and consumption of gaseous or liquid phase methane in the natural gas leakage process, and promote the generation of methane hydrate.

This utility model discloses a patellar strap, comprising a strip-shaped body of elastic material. The body includes a first connecting part, an active part, and a second connecting part connected in sequence, such that the first and second connecting parts are connected to form a ring-shaped structure that fits below the knee. The active part has an upper band and a lower band. In use, the upper band fits against the patellar tendon, and at least a portion of the upper band is positioned higher than the positions of the first and second connecting parts. This patellar strap employs a partially open structure in its body. By utilizing the cooperation of the upper and lower bands, it ensures good protection for the knee while cleverly lowering the connection point of the body below the popliteal fossa, reducing wearing pain and effectively alleviating the problem of low wearing comfort in existing patellar straps.

The utility model discloses a photovoltaic cleaning robot includes: main body frame, first rolling brush and second rolling brush. Main body frame is configured as with mechanical arm connection, and first rolling brush and second rolling brush at least one movable install on main body frame, and along the length direction of first rolling brush removes, and second rolling brush and first rolling brush along the radial arrangement of second rolling brush. Second rolling brush moves relative to first rolling brush just can adapt to different size photovoltaic panel, that is, through the telescopic of rolling brush, the size adjustment can be completed, and second rolling brush and first rolling brush do not need to disassemble, therefore, can size quick -adjusting, be favorable to quick -match the size of photovoltaic panel to thereby be favorable to improve cleaning effect.

The application provides a self-supporting Ni-Fe-Mn oxygen evolution electrocatalyst and a preparation method thereof, and belongs to the technical field of catalytic material preparation. The Ni, Fe and Mn metal raw materials are repeatedly smelted, and after smelting, suction casting is carried out to obtain a cast plate. The cast plate is subjected to homogenization treatment, and then is cut and polished. Finally, etching is carried out in a nitric acid solution to obtain the self-supporting Ni-Fe-Mn oxygen evolution electrocatalyst. The self-supporting electrocatalyst is prepared by the method of arc smelting, heat treatment and chemical etching, and has the advantages of simple preparation process, easy industrialization, adjustable size, excellent stability and excellent OER performance.

The utility model relates to animal medical equipment technical field provides a kind of anti-grabbing animal blood collection frame, comprising: animal corral, blood collection frame door, support plane and multiple movable arm fixing frame;The animal corral is left with opening;The animal corral is respectively welded with door clamping channel steel in opening two sides, the first stainless steel plate is welded in the opening lower of the animal corral;The blood collection frame door is movably arranged in door clamping channel steel;The support plane is fixedly connected on the first stainless steel plate;Multiple movable arm fixing frame is movably arranged on the support plane.The utility model can effectively improve blood sampling safety, reduce the stress response of giant panda, can improve the convenience and efficiency of blood sampling operation, and adapt to different panda individuals, with the characteristics of stable structure, strong durability.

This utility model relates to the field of punching machine technology, and in particular to a multi-position synchronous punching machine for aluminum single-panel processing. It includes a punching frame, a pulling component, a punching component, and a material holding component. Moving boxes are symmetrically fixed on both sides of the punching frame, and a punching seat is horizontally fixed between the moving boxes on both sides of the punching frame. Lower guide bars are horizontally fixed on both sides of the moving boxes on both sides of the punching frame, and an upper guide bar is horizontally fixed above the lower guide bars. A lead screw is horizontally rotatably connected to the middle of one moving box on one side of the punching frame, and a pulling motor is horizontally fixed on one side of the punching frame, with the output end of the pulling motor fixed to the end of the lead screw. The pulling component includes a support frame, and moving clip frames are fixed on both sides of the bottom surface of the support frame. This utility model eliminates the need for manual pushing of the aluminum single-panel, and the punching interval is adjustable, which helps ensure the accuracy of continuous punching processing of aluminum single-panels.

The utility model discloses a special tool of hoisting into a pile of steel sheet, including first L type frame, the right side swing installation of first L type frame has the second L type frame, the front end swing installation of second L type frame has the third L type frame, the left side swing installation of third L type frame has the fourth L type frame, the inside of first L type frame is set up with first limit expansion hole, the inside left side fixed mounting of first limit expansion hole has first connecting bearing, the inside of first connecting bearing is provided with first adjusting screw rod, the inside right side swing installation of first limit expansion hole has first limit expansion rod, the inside of second L type frame is set up with second limit expansion hole. The utility model discloses a first L type frame, second L type frame, third L type frame and fourth L type frame and steel wire rope and hook cooperation constitute hoisting tool, and then hoist the steel sheet of the pile board and its above, improve the hoisting efficiency of steel sheet.

This invention relates to a retrieval device, comprising: a capture assembly including a locking wire, a first capture wire and a second capture wire in an annular shape, the locking wire being attached to the first capture wire and axially movable relative to the first capture wire; and a control assembly connected to the capture assembly and used to control the capture assembly to switch between an initial state and a locked state. In the initial state, the distal end of the first capture wire, together with the distal end of the locking wire, is radially separated from the second capture wire, forming a capture space with an opening between the first and second capture wires. In the locked state, the locking wire and the first capture wire extend from the inside of the second capture wire to the outside of the second capture wire, and at least the locking wire intersects with the distal end of the second capture wire, closing the opening of the capture space. The retrieval device according to this invention can efficiently and securely capture electrode wires, significantly reducing surgical time and improving the success rate of surgery.

Adjustable batch rectangular steel plate feeding assembly and feeding method relate to the technical field of automatic steel plate feeding. The adjustable batch rectangular steel plate feeding assembly comprises a steel plate storage device, a horizontal push plate device and a small plate supporting device. The upper end of the steel plate storage device is provided with a storage interval, the bottom of the storage interval is provided with a height-adjustable steel plate bearing surface, and the top of the storage interval is provided with a steel plate discharge surface. The horizontal push plate device is used for pushing the steel plate at the upper end of the steel plate discharge surface to the outside of the rear end of the steel plate storage device. The upper end of the small plate supporting device is provided with a height-adjustable steel plate transfer surface. When the steel plate transfer surface is at the high position, the steel plate transfer surface is flush with the steel plate discharge surface. When the steel plate transfer surface is at the low position, the steel plate transfer surface is located at the lower end of the storage interval. A continuous rectangular steel plate feeding method is based on the adjustable batch rectangular steel plate feeding assembly. The application is used for stacking and storing steel plates and automatically discharging the steel plates, and belongs to an important link in the automatic manufacturing of nuclear power embedded parts.

This utility model belongs to the field of cable tray technology, specifically relating to a stepped epoxy resin composite high-strength cable tray, including two symmetrical side beams. A crossbeam is bolted to the inner wall of each side beam, and grooves are formed on the surface of the crossbeam. This utility model achieves flexible adjustment of the cable tray size through the cooperation of a first threaded rod, adjusting sleeve, extension plate, sliding groove, recess, slider, fixing pin, and rectangular block. The beneficial effects of this design are significant. In actual installation scenarios, the site environment is complex and diverse, and the requirements for cable tray size vary. Through the above adjustment method, the cable tray size can be flexibly adjusted according to the actual site conditions, ensuring a perfect fit between the cable tray and the installation environment. This effectively avoids installation difficulties caused by mismatch between cable tray size and environment, greatly improving the convenience and adaptability of cable tray installation and ensuring the smooth progress of electrical wiring projects.

The present application relates to the technical field of biological nanomaterials, in particular to a multi-level structure calcium phosphate nanomaterial, a preparation method and application thereof.The present application prepares small-scale calcium phosphate nanoparticles through a biomimetic mineralization strategy, and then crosslinks the same with L-lysine or cystamine dihydrochloride through an EDC / NHS-mediated amide coupling method to form a size-controllable multi-level structure aggregate.Compared with the small-scale calcium phosphate nanoparticles, the multi-level structure, as a doping matrix of metal ions such as Cu and Mn, significantly improves the catalytic efficiency of the metal ions, as a drug carrier, improves the loading capacity of the drug, and the multi-level structure shows a higher tumor accumulation effect.The present application has a simple preparation method, can realize the size regulation of the multi-level structure calcium phosphate nanomaterial, and can realize the tumor microenvironment-responsive disintegration of the multi-level structure.The method has good process repeatability and high batch stability, is suitable for developing high-performance nanodrugs, and has good application potential in the biomedical field.

This application provides a radio frequency (RF) front-end module, relating to the field of RF technology. The RF front-end module includes a power amplification module, a signal coupling module, and a detection module. The signal coupling module includes a control unit and a bidirectional coupling circuit, which is connected between the power amplification module and the detection module. The control unit is configured to control the bidirectional coupling circuit to be in a conducting state. The bidirectional coupling circuit is configured to couple the RF signal on the signal transmission line of the power amplification module to the detection module. The detection module is configured to detect a pre-distortion signal based on the coupled signal transmitted by the bidirectional coupling circuit. This application achieves bidirectional coupling by coupling the transmitted and echo signals on the signal transmission line of the power amplification module to the detection module, thereby enabling accurate detection and feedback of the nonlinear characteristics of the power amplification module's core. Based on this, the pre-distortion signal determined is more accurate.

This utility model relates to an adjustable high-current generator based on an autotransformer, comprising an autotransformer body (1), an annular iron core (2) on the autotransformer body (1), several turns of adjustable coil (3) wound on the annular iron core (2), a voltage adjustment knob (4) rotatably mounted on the autotransformer body (1), a sliding contact (5) on the voltage adjustment knob (4) cooperating with each adjustable coil (3), several turns of fixed coil (6) wound on the annular iron core (2), one end of the fixed coil (6) connected to one end of the adjustable coil (3) according to polarity, and the other end forming the primary coil with the coil between the sliding contact (5), and a low-voltage high-current secondary coil (7) wound on the annular iron core (2). It simplifies the structure of existing high-current generators, is smaller in size and lighter in weight, easier to transport, has a wider current adjustment range, lower cost, and can meet diverse use and testing needs.

The utility model discloses an injection mold convenient to forming cavity adaptation relates to injection mold technical field, including upper module, ring, connecting plate, bottom module and film groove, the upper module top is provided with forming cavity structure, and the forming cavity structure includes connecting plate, first forming cavity block, second forming cavity block, forming groove, shaping film block and film groove, and the film groove sets up in the connecting plate top, and the shaping film block is installed in the film groove, and the shaping film block top is equipped with first forming cavity block, second forming cavity block, and the first forming cavity block, second forming cavity block inboard is provided with forming groove, and the oblique guide groove of guide plate guides first forming cavity block and second forming cavity block flexible sliding, and the size of forming cavity can be adjusted, and the shaping film block is fixed through the film groove, and it is convenient to replace to adapt to different products fast, and the accurate matching of cooperation forming groove and injection head satisfies the diversified injection demand, and the mold adaptation cost and time are reduced.

The utility model belongs to the technical field of automobile cup holder, especially a kind of automobile cup holder assembly with folding detachable structure, two fixed clamps are symmetrically installed in fixed block side, fixed clamp includes the clamping jaw of high-strength nylon material and the clamping lock of metal material, lift clamping lock when installing, the clamping jaw is rotated and opened around hinged point by lever principle drive, clamping jaw is buckled on adaptive structure, after pressing clamping lock, clamping jaw is clamped by built-in spring reset, realize the quick fixing of fixed block;When disassembling, only need to lift clamping lock again, no installation trace remains, adapt to a variety of vehicle body installation positions, realize the function of quick disassembly and stable support, the bottom of fixed block is rotatably connected with connecting seat, connecting rod is arranged between fixed block and connecting seat, limit assembly is arranged on connecting rod, limit assembly can fix the position of connecting rod, realize the angle adjustment of connecting seat, satisfy different placing angle needs, adjusting seat and connecting seat can be adjustably connected, the size of cup holder placing container can be adjusted.

The application discloses a compartment body assembling and welding workstation with automatic demolding function, and particularly relates to the field of compartment body assembling processing, and comprises an assembling and welding fixture unit, a demolding vehicle and a track unit, a discharging buffer unit and a hoisting unit, the assembling and welding fixture unit comprises an assembling inner mold clamp, a right outer operation platform, a left outer operation platform and a gantry pressing mechanism, and the assembling inner mold clamp comprises an inner rack assembly, a bottom supporting plate assembly, a tail positioning and tensioning rack assembly, a front door lower supporting assembly, a front door side supporting assembly and an inner supporting mechanism assembly. The assembling and welding fixture unit comprises the bottom supporting plate assembly, the tail positioning and tensioning rack assembly, the front door lower supporting assembly, the front door side supporting assembly and the inner supporting mechanism, can position and clamp the bottom plate, the left side plate, the right side plate and the front door plate, then utilizes a welding assembly to simultaneously assemble and weld the bottom plate, the left side plate, the right side plate and the front door plate, and is better in compartment body assembling and processing efficiency.

This utility model belongs to the technical field of headphones, specifically relating to a sliding arm structure and headphones. The sliding arm structure includes a main body, which is cylindrical, and has a coaxially nested cavity inside. The main body has a first end and a second end. The first end has a first through hole communicating with the cavity. The second end has a connecting part with a second through hole penetrating through the connecting part along its thickness direction. By making the main body cylindrical, the stress can be evenly distributed along the circumference when subjected to radial force, avoiding local stress concentration, effectively improving the load-bearing capacity and fatigue resistance of the sliding arm structure, and extending its service life. The cylindrical main body also effectively enhances the structural stability of the sliding arm structure, making it less prone to deformation when subjected to external pressure or bending.

The utility model discloses a kind of wall connecting devices of bridge pier column safety ladder stand, belong to bridge construction technical field, mainly used for the safety ladder stand installation of bridge pier column.The technical problem to be solved by the utility model is to provide a kind of wall connecting devices of bridge pier column safety ladder stand, including wall connecting locking mechanism and the ladder stand reinforcing fixed mechanism of the U-shaped structure of the open towards wall connecting locking mechanism;Wall connecting locking mechanism includes the first big arm and the second big arm of parallel arrangement, ladder stand reinforcing fixed mechanism is bolted with wall connecting locking mechanism;Two parallelly arranged first arm frames are bolted on the first big arm, two parallelly arranged second arm frames are bolted on the second big arm, first, second arm frame is bolted by the butt joint of the U-shaped bolt of open downward;Adjacent first, second arm frame enclose with first, second big arm to form square cavity for bridge pier column to pass through;To improve the installation efficiency of wall connecting device, reusable and guarantee safe construction.

This invention relates to the field of oilfield chemistry, and discloses an oil displacement composition and an oil displacement agent, as well as their applications. The oil displacement composition comprises component A and component B, wherein component A has the structure shown in Formula I, and component B has the structure shown in Formula II; wherein R1 is a C1-C8 alkanol or a C6-C8 aromatic alcohol; PO is a polyoxypropylene segment; EO is a polyoxyethylene segment; m = 1-30; n = 1-15; Y ‑ R1 is an acid radical ion; M is an alkali metal or alkaline earth metal; R2 is a C1-C8 alkyl group or a C6-C8 aryl group. The oil displacement agent prepared from the oil displacement composition of this invention can be used in chemical oil displacement. This oil displacement agent is an ultra-low interfacial tension spreading type oil displacement agent, with simple composition, good solubility, and cost advantage. R1-O-(PO) m -(EO) n -Y ‑ M + Formula I; R2-OH Formula II.

The application relates to the technical field of nanomaterial preparation, in particular to a method for preparing Cu@Ag particles by laser, which comprises the following steps: S1, preparing a solution: dissolving a copper precursor in a solvent to obtain a copper precursor solution, and dissolving a silver precursor in a solvent to obtain a silver precursor solution; S2, irradiating the copper precursor solution by using a femtosecond pulse laser to generate nano-copper particle cores through reduction; S3, adding the silver precursor solution into the liquid phase environment containing the nano-copper particle cores, adjusting the wavelength parameter of the picosecond pulse laser to the surface of the nano-copper particle cores to realize laser energy focusing, irradiating the solution by using the picosecond pulse laser, allowing silver ions to be reduced and deposited on the surface of the nano-copper particle cores to form a silver shell, and thus obtaining Cu@Ag particles, so that the problems that the existing chemical reduction method is not environmentally friendly and it is difficult to accurately control the generation sequence of the core and the shell are solved.

This invention discloses a turning and grinding device for the inner ring of a precision bearing, relating to the field of bearing grinding technology. It includes a bearing grinding box, with a first operating table fixedly installed on one side of the box. Two sets of electric slide rails are symmetrically installed on the first operating table. A second operating table is fixedly installed on one side of the first operating table, with a detection camera fixedly installed on the second operating table. A first movable seat is provided on the other side of the first operating table, and a grinding robot is detachably installed on the first movable seat. Through the coordinated use of the grinding clamping base, the detection camera, the grinding robot, and the grinding control system, the clamping force during grinding can be adaptively adjusted according to the bearing size. Simultaneously, the size of the grinding head for the inner ring can be adjusted according to different bearing sizes. Through the coordinated use of the detection camera and the grinding control system, the device identifies debris accumulation and adjusts the air cooling intensity, only activating liquid nitrogen when air cooling is saturated and the temperature continuously exceeds the standard.

The application discloses a synthesis method of rare earth borate nanoparticles, which comprises the following steps: heating a boron precursor in a nitrogen atmosphere, then rapidly injecting a rare earth metal precursor, rapidly heating to 280-310 DEG C and maintaining for a period of time to form uniform rare earth borate nanoparticles; wherein the rare earth metal precursor is an organic solution containing rare earth acetate hydrate and oleic acid; and the boron precursor is an organic solution containing tributyl borate. The application firstly innovatively improves the synthesis method of rare earth borate nanoparticles, prepares regular morphology and uniform size neodymium borate nanoparticles, and after optical performance characterization, it is shown that the neodymium borate nanoparticles have the potential for BNCT used for near-infrared two-zone imaging guidance. The preparation method can realize the size control of the neodymium borate nanoparticles by adjusting the proportion of the neodymium precursor and the boron precursor, and is suitable for the preparation of various rare earth borate nanoparticles, and the method has universality.

The application belongs to the technical field of CO2 geological storage, and discloses a kind of indoor preparation device of environment-friendly CO2 micro-foam fluid and its application in improving capillary trapping CO2 efficiency of sandstone saltwater layer. The device comprises: a gas injection path composed of a CO2 gas cylinder, a gas booster pump and a gas flow control meter; a liquid injection path composed of a water source, an advection pump and a piston container; the parallel gas injection path and the liquid injection path converge in a high-pressure and high-speed stirring container; the high-pressure and high-speed stirring container is connected with a multi-stage shearing device, a core holder, a two-dimensional high-pressure visual observation cabin, a back pressure valve and a liquid receiving cylinder in sequence; the liquid receiving cylinder is placed on the tray of a precision electronic balance; the mixed fluid stirred uniformly by the high-pressure and high-speed stirring container flows to the multi-stage shearing device, the core holder, the two-dimensional high-pressure visual observation cabin, the back pressure valve and the liquid receiving cylinder in sequence. The application can improve the capillary storage efficiency of CO2 in saltwater layer and improve the safety of CO2 storage in saltwater layer.

The utility model discloses a coal taking device of being favorable to improve the sampling representativeness of factory coal, it includes the sampling tube of coal taking machine, be equipped with screw rod in the sampling tube, be equipped with sampling box on the sampling tube upper end, sampling box lower extreme and upper end are equipped with sample discharge gate and sample feed port respectively, sample feed port with sampling tube intercommunication, be equipped with the feed port size adjusting device for adjusting the feed quantity at sample feed port, the utility model is favorable to improve the sampling representativeness, and the objective reaction factory coal quality.

The present application relates to raw material crushing technical field, and discloses a kind of raw material crushing equipment for poultry feather production amino acid, comprising: pretreatment cylinder, the top of the pretreatment cylinder is communicated with feed frame, the top of the feed frame is rotatably connected with cover plate by rotating pin, the bottom of the pretreatment cylinder is communicated with discharge nozzle, the outside of the discharge nozzle is fixedly connected with support plate, the bottom of the support plate is fixedly connected with base;Crushing cylinder, the bottom of the crushing cylinder is located in the central position and is provided with discharge port;Crushing device, for grading crushing treatment to raw material;Stirring device, the stirring device is used to stir the raw material in the crushing cylinder;Discharge device, the crushed raw material is screened and discharged by discharge device.The raw material crushing equipment for poultry feather production amino acid processes feather using the processing mode of combining pre-crushing and fine crushing, and the pre-crushed feather is finely ground and cut.

The utility model provides a protective helmet which comprises a main body, ear protecting parts are arranged on the left side and the right side of the main body, main connecting parts are arranged on one sides of the ear protecting parts, and one ends of the two main connecting parts are detachably connected with each other; auxiliary connecting parts are arranged on the top sides of the main connecting parts, and one ends of the two sets of auxiliary connecting parts are detachably connected with each other; a central protection strip is arranged in the top center of the main body; side protection strips are arranged on the left and right sides, close to the central protection strip, of the main body; first notches are formed in the sides, close to the auxiliary connecting parts, of the main body, and the tail ends of the center protection strips are inserted into the first notches correspondingly and detachably connected with the inner side face of the main body; a second notch is formed in the portion, close to the position between the ear protecting part and the main connecting part, of the body, and the tail ends of the side protecting strips are inserted into the second notch and detachably connected with the inner side face of the body. According to the detachable helmet, the whole detachable design is adopted, so that when a user carries the helmet, the helmet in a three-dimensional style can be conveniently disassembled into a planar style, the occupied space volume is reduced, and the purpose of being convenient to carry is achieved.

The present application relates to the field of mine engineering and drilling technology, and particularly relates to an anchoring drill rod device and a use method, the anchoring drill rod device comprises a drill bit, a rod body, a telescopic assembly and a hydraulic drive assembly, the rod body has a cavity for installing the telescopic assembly, one end of the telescopic assembly extends into the cavity and is hinged to the drill bit, the telescopic assembly extends or contracts in the extension direction of the rod body to change the radial size of the drill bit, and the hydraulic drive assembly is connected with the telescopic assembly to provide power for the extension or contraction of the telescopic assembly. The anchoring drill rod device can adjust the size of the drill bit and improve the applicability of hole anchoring.

This invention relates to the field of oilfield chemistry, and discloses a betaine compound, its preparation method, and its application. The betaine compound has the structure shown in Formula I: In Formula I, m = 1-30; n = 1-15; R1 is a C1-C8 carbon chain alcohol or a C6-C8 aromatic alcohol; R2 and R3 are each independently hydrogen or methyl; R4 is a C1-C3 alkylene or hydroxylated alkylene; M ‑ SO3 ‑ or COO ‑ The betaine compound contains a large number of PO groups, increasing the size of the hydrophobic groups. Betaine percolators containing this compound, through the synergistic effect of the PO groups and betaine molecules, transform the active components of crude oil into low-molecular-weight components (such as fatty acids), reducing the interfacial film strength of the betaine and thus improving the deformability of the emulsion. The betaine compound of this invention can be used as a betaine percolator for fracturing in low-permeability reservoirs, further improving oil recovery.