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332results about How to "Easy to get materials" patented technology

BBM-added bamboo powder biodegradable material and application thereof in beer bottles

The invention relates to the technical field of biodegradable materials, and particularly discloses a BBM-added bamboo powder biodegradable material and application thereof in beer bottles. The BBM-added bamboo powder biodegradable material is prepared from the following raw materials in parts by mass: 10 to 20 parts of poly (butylene succinate), 10 to 30 parts of poly (butylene adipate-co-terephthalate), 10 to 20 parts of bamboo powder, 1 to 3 parts of dopamine hydrochloride, 0.1 to 0.5 part of n-butylamine, 1 to 2 parts of hexadecyl trimethyl ammonium bromide, 1 to 5 parts of tetraethyl orthosilicate and 1 to 2 parts of tetrabutyl titanate. 1-2 parts of 3-aminopropyltriethoxysilane, 1-2 parts of an antioxidant and 1-2 parts of a plasticizer. The BBM obtained by the invention has excellent mechanical properties, improves the anti-ultraviolet intensity of a degradable material to a certain extent, and has very good biodegradability.
Owner:SHANTOU LEISHI PLASTIC TECH CO LTD

Stamping die for producing rear longitudinal beam of automobile

The invention relates to the technical field of automobile longitudinal beam die stamping, and discloses a stamping die for automobile rear longitudinal beam production, which comprises a rectangular die, a lifting mechanism is arranged at the bottom of the rectangular die, a buffer mechanism is arranged at the top of the rectangular die, an adjusting mechanism is arranged on the inner side of the top of the rectangular die, and the adjusting mechanism comprises a separating assembly and a positioning assembly. The separating assembly and the positioning assembly are arranged on the inner side of the top of the rectangular mold. When a second spring shaft moves, the second spring shaft and a top rectangular block are fixedly mounted, so that the rectangular block moves, when the rectangular block moves, an L-shaped gasket is driven to make contact with a steel plate, the steel plate is positioned and fixed, a workpiece can be positioned and clamped, errors caused by deviation in the machining process can be prevented, and the machining precision is improved. And a spring pin is fixedly installed in the first threaded sliding block, so that the workpiece is automatically bounced when machining is completed, and material taking is more convenient and faster.
Owner:JINGJIANG XINCHENG VEHICLE PARTS

Traditional Chinese medicine retention enema device for enterostomy patient

The utility model provides a traditional Chinese medicine retention enema device for an enterostomy patient, and belongs to the technical field of medical instruments. The device comprises a liquid filling assembly and an antifouling assembly, the liquid filling assembly comprises an enema bag and an infusion tube, and the infusion tube is provided with a Murphy dropper and a flow regulator; the anti-fouling assembly comprises an ostomy bag, and the ostomy bag comprises a bag body and a base plate. A through hole is formed in the chassis; a mounting hole is formed in the bag body, and a sealing piece is arranged in the mounting hole in a matched mode. An insertion channel used for inserting an infusion tube is arranged in the sealing piece, and the tail end of the infusion tube enters the enterostomy through the insertion channel. The infusion tube is further sleeved with a flexible tube, one end of the flexible tube penetrates through the insertion channel of the sealing piece and extends into the enterostomy, and the other end of the flexible tube is arranged outside the sealing piece. And the other side of the fixed pressure plate is also connected with a chock plug. The device is simple to operate and convenient and quick to use; the ostomy bag is clean and transparent, and ostomy conditions are easy to observe; discharge is all in the ostomy bag, peculiar smell is small, pollution is avoided, and the comfort level of a patient is improved.
Owner:山东第一医科大学第三附属医院(山东省医学科学院附属医院)

Device for reducing bubble generation rate of concrete forming surface

The utility model relates to the field of constructional engineering, and particularly discloses a device for reducing the bubble generation rate of a concrete forming surface. The air guide pipe is reserved in the aluminum formwork, the air holes are formed in the periphery of the air guide pipe, when concrete is poured into the aluminum formwork in a layered mode, a vibrating rod is used for vibrating the concrete, and at the moment, part of air reserved in the concrete moves upwards and escapes; part of air flows into the air guide pipe from the air holes under the action of concrete pressure and the vibrating rod, air remaining in concrete is effectively helped to flow out quickly, bubbles are effectively prevented from being formed on the surface of a formed concrete structure by the remaining air, and the device is convenient in material taking, simple in use method, free of influence of the construction environment, simple in construction and low in cost. The construction efficiency can be effectively improved, the construction period is shortened, the air guide pipe can be repeatedly used, the bubble repairing cost in the later device decoration project period is fully reduced, the project cost is effectively reduced, and the project progress is accelerated.
Owner:SHAANXI CONSTR ENG SHENMU CONSTR CO LTD

Preparation method and application of bionic intelligent hydrophilic and hydrophobic fresh water collection fiber

The invention discloses a preparation method and application of bionic intelligent hydrophilic and hydrophobic fresh water collection fibers, and belongs to the technical field of chemical bionics. The preparation device comprises a fibril fixing frame, a symmetrical hole channel square liquid tank, a camera obscura ultraviolet analyzer and a fiber receiver. The method comprises the following steps: firstly, fixing fibrils on a fibril fixing frame, enabling a prepared polymer mixed solution with the mass fraction of 9%-15% and the fibrils to pass through a symmetrical pore channel square liquid tank, pouring the polymer solution into the square liquid tank, pulling the fibrils at a constant speed to sequentially pass through the square liquid tank, and curing generated bead string fibers through an ultraviolet curing box, finally, fixing the bead string fiber on a fiber receiver, and freeze-drying the received bead string fiber to obtain the bionic intelligent fresh water collection fiber with the micro-nano pore channel structure. The preparation device is simple, the preparation method is simple, and the cost is extremely low; the surface of the fresh water collecting fiber is provided with a nano-scale interpenetrating network pore channel structure, so that the fresh water collecting fiber is easy to weave and has excellent stability, and rapid capture and collection of liquid drops are realized.
Owner:BEIHANG UNIV

Lysogenic bacteriophage community as well as extraction method and application thereof

According to the lysogenic phage community and the extraction method and application thereof, bacterial and phage communities are separated from in-situ soil in a medium proportion through a tangential flow technology, single bacterial communities and single phage communities are obtained through enrichment and concentration, meanwhile, mitomycin C is added into the single bacterial communities for lysogenic induction, and the lysogenic phage communities are obtained. And then filtering and enriching by using the tangential flow system to obtain a high-flux lysogenic phage community, and finally obtaining a single bacterial community, a bacterial-phage mixed community and a bacterial-lysogenic phage mixed community. The phage transplantation technology can promote indigenous microorganisms to participate in the plant growth and development process, and the transplanted lysogenous phage can participate in host plant hormone anabolism by optimizing a microbial network structure and injecting auxiliary metabolism genes. The method provides a long-acting environment-friendly microorganism synergistic growth promoting technology for green agriculture development in China.
Owner:NANJING AGRICULTURAL UNIVERSITY

Downhole pressure opening sand setting type perforation sand control pipe column

The invention discloses an underground pressure opening sand setting type perforation sand prevention pipe column which comprises a non-channel coupling, a sand setting pipe is fixedly connected to one end of the non-channel coupling, an embossing guide pipe is fixedly connected to the other end of the non-channel coupling, a perforating gun is connected to the other end of the embossing guide pipe, and an exploder is fixedly connected to the interior of the joint of the embossing guide pipe and the perforating gun. The other end of the sand settling pipe is connected with a sand filtering pipe, and the other end of the sand filtering pipe is connected with an oil pipe; according to the underground pressure opening sand setting type perforation sand prevention pipe column, the pressure opening sand setting type perforation sand prevention pipe column is installed underground, underground mechanical sand prevention is achieved while well completion is conducted through the underground perforation pipe column, formation sand can be prevented from entering a ground production system, and the production efficiency is improved. Moreover, the sand prevention pipe column can be prevented from being put down after the perforation pipe column is lifted up after the perforation of the shallow gas well is completed, the well control risk is effectively avoided, the sand setting function in the pipe is achieved, the sand filter pipe airflow channel can be prevented from being buried by stratum sand, and the sand prevention device can be popularized and applied to underground mechanical sand prevention process technologies of various oil fields.
Owner:PETROCHINA CO LTD

Temporary supporting structure for profiled steel sheet floor construction

The utility model discloses a temporary supporting structure for construction of a profiled steel sheet floor. The temporary supporting structure comprises an H-shaped steel beam, a profiled steel sheet, a transverse wood square column, a vertical wood square column and an inclined strut, the two H-shaped steel beams are symmetrically arranged in the height direction of a building floor; the two ends of the profiled steel sheet are bolted to the upper ends of flange plates of the two H-shaped steel beams through studs; the plurality of transverse square wood columns are supported between the two H-shaped steel beams, and the top surfaces of the transverse square wood columns abut against the bottom surface of the profiled steel sheet; the upper end faces of the vertical square wood columns are supported on the bottom faces of the transverse square wood columns in a one-to-one correspondence mode, and the lower end faces of the vertical square wood columns abut against the top face of a lower flange plate of the H-shaped steel beam; the two end faces of the inclined strut are fixed to the side wall, opposite to the web of the H-shaped steel beam, of the vertical wood brace and the bottom face of the transverse wood brace correspondingly. The temporary supporting structure has the advantages of being high in flexibility, economical, efficient, good in bearing capacity and reliable in quality, construction is easy, convenient and fast, and the construction cost is reduced.
Owner:CHINA CONSTRUCTION THIRD BUREAU GROUP BEIJING CO LTD

Stirrup bending tool

ActiveCN222587951UGuaranteed bending qualityEasy to bendStirrupRebar
The utility model discloses a stirrup bending tool which comprises a wrench and a main reinforcement sleeve. The main reinforcement sleeve is of a hollow cylindrical structure with an opening in one side, and the main reinforcement sleeve can be coaxially connected to the main reinforcement in a sleeving mode through the opening. Stirrup grooves of U-shaped structures are formed in the edges of the two sides of the opening, the stirrup is wound around the main reinforcement, the stirrup penetrates through the two stirrup grooves, and the stirrup can abut against the ends, away from the opening, of the stirrup grooves; the wrench is of a long-strip-shaped structure, and one end of the wrench is fixedly connected with the other side, away from the opening, of the main rib sleeve. The utility model relates to the technical field of reinforcing steel bar machining tools, and can solve the problem that in the prior art, a binding tool is poor in stirrup bending machining quality.
Owner:CHINA CONSTR EIGHTH ENG DIV CORP LTD ZHEJIANG CONSTR CO LTD

Multifunctional tool for outdoor hidden knife saw of automobile safety hammer

The utility model discloses a multifunctional tool for an outdoor hidden knife saw of an automobile safety hammer, which comprises a tool shell, a handle is arranged at one end of the tool shell, a wrapping piece is arranged at the end part of the tool shell, a sleeve is inserted into the tool shell, a mounting seat is screwed at the bottom of the wrapping piece, a safety hammer firing pin is arranged at the bottom of the mounting seat, and a handle is arranged at the other end of the tool shell. A fixing column is fixedly inserted into the top of the tool shell, the bottom of the fixing column abuts against the sleeve, a knife saw is contained in the tool shell, and a telescopic assembly convenient to adjust is arranged in the handle; the multifunctional tool for the outdoor hidden knife saw of the automobile safety hammer is compact in structure and easy to carry and hide, functions can be rapidly converted in emergency situations, the efficiency of coping with the emergency situations is improved, the multifunctional tool has the multiple functions of automobile window breaking, safety belt cutting and outdoor knife saw, and the multifunctional tool is suitable for popularization and application. The preparation method has the characteristics of simple preparation process, convenient material taking, safety, high efficiency and easy operation.
Owner:SHENZHEN FEIRUN IND CO LTD

A formaldehyde adsorption treatment device for building construction

The present invention discloses a formaldehyde adsorption treatment device for construction, which relates to the technical field of construction, and comprises a treatment and collection component, an adsorption component is installed on the top of the treatment and collection component, a separation component is arranged on the top of the adsorption component, a driving component and an exhaust component are arranged inside the separation component, a dust collection component is arranged outside the separation component, and the treatment and collection component is used to treat formaldehyde. The present invention solves the problem of limited formaldehyde adsorption capacity of activated carbon plates, and does not need to frequently replace activated carbon plates during construction, thereby improving the convenience of use. In addition, the problem of secondary pollution is effectively solved by decomposing formaldehyde, and the formaldehyde adsorption treatment effect in the construction environment is improved. At the same time, the problem that a large number of dust particles in the construction environment are prone to pollute, block, and even cause device failure to the formaldehyde adsorption device is solved.
Owner:ZHONGYI CHENGDA CONSTR GRP

Red clay improver and red clay improvement method

The invention discloses a red clay improver and a red clay improvement method. The red clay modifier comprises rice hull ash and carbide slag. The improvement method of the red clay comprises the step of mixing the rice hull ash and the carbide slag with different mixing amounts with the red clay according to the optimal proportion. Obtaining the maximum dry density and the optimal water content of the mixed improved soil of each mixing amount; according to the maximum dry density and the optimal water content, the improved soil is prepared into multiple test pieces, and curing is conducted for 28 days; carrying out related mechanical property tests on the test pieces; and determining the optimal mixing amount of the rice hull ash and carbide slag improved red clay according to the mechanical property test result. According to the method, the unconfined compressive strength, the shear strength and the compression performance of the red clay can be remarkably improved, the improved materials are all industrial solid waste materials, the materials are convenient to obtain and low in cost, environmental pollution can be reduced, and the method is particularly suitable for solving the practical engineering problem in the red clay area.
Owner:SHANDONG LUQIAO GROUP CO LTD +1

Test device for researching spawning habits of eel parents

The utility model discloses a test device for researching the egg laying habit of eel parents. The test device comprises a test barrel, a light shield, a temperature controller, a rotary camera, a hidden nest, a directional camera and a control display screen, the test barrel is a light-proof barrel with an opening in the upper part; the light shield is arranged at the upper opening of the test barrel; the temperature controller is arranged in the test barrel; the rotary camera is an underwater camera which has a dark night vision function and can rotate by 360 degrees, and is detachably fixed on the inner side wall of the test barrel; the hidden nest is a lightproof hollow circular tube and is arranged at the bottom of the inner side of the test barrel; the directional camera has a dark night vision function and is arranged at the opening of the hidden nest; the control display screen is used for intuitively presenting eel parent spawning habit information shot by the rotary camera and the directional camera, and carrying out real-time regulation and display by controlling the shooting view angles of different cameras in a split-screen manner.
Owner:EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI

Formaldehyde adsorption treatment device for building construction

The invention discloses a formaldehyde adsorption treatment device for building construction, and relates to the technical field of building construction, the formaldehyde adsorption treatment device comprises a treatment collection assembly, the top of the treatment collection assembly is provided with an adsorption assembly, the top of the adsorption assembly is provided with a separation assembly, and the separation assembly is internally provided with a driving assembly and an air draft assembly; a dust collection assembly is arranged outside the separation assembly, and the treatment and collection assembly is used for treating formaldehyde. The problem that an activated carbon plate is limited in formaldehyde adsorption capacity is solved, the activated carbon plate does not need to be frequently replaced in the building construction process, the use convenience is improved, the problem of secondary pollution is effectively solved by decomposing formaldehyde, the formaldehyde adsorption treatment effect in the building construction environment is improved, and meanwhile, the formaldehyde adsorption treatment effect in the building construction environment is improved. The problems that in the building construction environment, a large number of dust particles are prone to polluting and blocking the formaldehyde adsorption device and even cause device faults are solved.
Owner:ZHONGYI CHENGDA CONSTR GRP

Test device for researching feeding habit of eel fry

The utility model discloses a test device for researching feeding habits of eel fry and a using method thereof, the test device comprises a transparent test barrel, a plurality of shading materials with different light transmittances, a food storage device, a water pump, a temperature controller, a control display and a camera, the water pump is detachably fixed on the inner side surface of the test barrel; the temperature controller is arranged in the experiment barrel and is connected to the control display through a circuit, and the set temperature of the temperature controller is adjusted and controlled through the control display; the camera is arranged above the experiment barrel, the angle of the camera can be adjusted, the camera is connected to the control display, and the angle of the camera is controlled through the control display to achieve all-directional shooting and recording and visually present eel larva feeding habit information shot by the camera. The feeding habit of the eel fry can be comprehensively and coherently observed and shot.
Owner:EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI

Ecological restoration method for vegetation in saline-alkali soil in lake atrophy area

The invention discloses a method for ecological restoration of saline-alkali soil vegetation in a lake atrophy area. The method comprises the following steps: S1, dividing a restoration area: S1-1, arranging sampling points; s1-2, collecting and detecting a sample; s1-3, analyzing a detection result; s2, repairing the near lake bare area; s3, repairing the suaeda salsa repairing area; and S4, restoring the wetland restoration area. According to the method, the lake atrophy area is subjected to detailed block division, so that the restoration policy is made more specifically, the block meeting the fertility requirement is subjected to cultivated land transformation, and the other blocks are subjected to ecological restoration by adopting corresponding methods, so that the ecological utilization of the lake atrophy area is improved, and the purpose of adjusting measures to local conditions is achieved; the method has certain guiding significance and economic value for ecological management of the lake atrophy area.
Owner:NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA

Aluminum profile right-angle cutting tool

The utility model relates to an aluminum profile right-angle cutting tool which comprises a base and a cutting rod, a support is fixedly arranged on the base, the upper portion of the support is hinged to a fixing frame plate, one end of the cutting rod is fixedly connected to the extending end of the fixing frame plate, a cutting handle is arranged at the other end of the cutting rod, and a reinforcing rib plate is connected to the inner side of the cutting rod in a clamped mode to enhance the bending resistance of the cutting rod. A right-angle cutter is installed on the cutting rod, a fixing plate is fixedly arranged on the base, the lower end of the right-angle cutter and the fixing plate are matched to define a square shape, when the right-angle cutter falls down, the corner of the aluminum profile is cut off, when the tool is used for cutting the right angle, positioning is not needed, cutting is accurately and rapidly completed, and the production efficiency is improved. The aluminum profile is placed on the base and abuts against the edge of the fixing plate, the pressing tool is arranged on the base and abuts against the top face of the aluminum profile, corner cutting failure caused by tilting or displacement of the aluminum profile is prevented, the aluminum profile does not need to be held by hands, and potential safety hazards are reduced.
Owner:SHANDONG LANSI ALUMINUM TECH CO LTD

Genetic transformation method of perennial elymus nutans

The invention belongs to the technical field of plant genetic engineering, and particularly relates to a genetic transformation method of perennial elymus nutans. According to the genetic transformation method of elymus nutans, mature embryos serve as explants for inducing callus formation, the method has the advantages that material obtaining is convenient, operation is simple and easy, the supply problem of explant material obtaining is solved, and meanwhile the physiological state of the mature embryos is consistent, so that the repeatability of experiments is good; in addition, the infection liquid contains the acetosyringone, and the acetosyringone (AS, Acetosyringone) can promote the growth of agrobacterium tumefaciens and enhance the activity of the agrobacterium tumefaciens, so that the conversion efficiency is improved; the browning phenomenon of the calluses is effectively inhibited through sterilization treatment, the normal growth of the calluses can be recovered, the transgenic elymus nutans plants are obtained through the technical scheme, and the research of researchers on the gene functions of the elymus nutans can be greatly promoted.
Owner:KUNMING INST OF BOTANY CHINESE ACAD OF SCI +1

Prefabricated column hoisting installation auxiliary device

The utility model relates to a prefabricated column hoisting installation auxiliary device which comprises a lower-layer frame and an upper-layer frame, the lower-layer frame and the upper-layer frame are fixedly connected through four pieces of vertical angle steel, the lower-layer frame, the upper-layer frame and the four pieces of vertical angle steel are connected to form a frame barrel-shaped structure, and the caliber of the frame barrel-shaped structure is consistent with the size of a prefabricated column. A big-end-up cup opening frame is fixed to the top of the upper-layer frame, the upper portion of the cup opening frame is larger than the prefabricated column, levers are installed on the periphery of the cup opening frame, and idler wheels are arranged at the bottoms of the levers. When the auxiliary device is used, the device is positioned and placed according to a cup opening hole in the top of a cup opening foundation, the caliber position of the cylindrical structure of the frame is located in the center of the cup opening hole, the prefabricated column is aligned with the caliber of the upper-layer frame through the levers on the periphery, and then the prefabricated column continues to be put down; the prefabricated column is placed in the cup opening hole along the cylindrical structure of the frame, so that the prefabricated column is placed in the center of the cup opening hole, positioning is accurate, and operation is easy.
Owner:SHANGHAI ERSHIYE CONSTR CO LTD +1

A chip conveyor rear axle

The present invention discloses a chip conveyor rear shaft, including a support shaft and guide wheel assemblies respectively arranged at both ends of the support shaft, the guide wheel assembly including a guide wheel and a fixed seat, the fixed seat being installed on the chip conveyor housing, the guide wheel being arranged between the fixed seat and the support shaft, the inner end surface of the fixed seat being provided with a positioning boss for positioning the guide wheel, the outer end surface of the guide wheel being provided with a positioning groove engaged with the positioning boss, the guide wheel being hollow inside, the support shaft being provided with an installation window for connecting the support shaft with the guide wheel assembly, and the support shaft being connected to the fixed seat. The rear shaft assembly of the present invention adopts a segmented detachable structure, which has a simple structure, is easy to maintain, and has a low maintenance cost, and is not limited by space for installation and disassembly, and the guide wheel can be installed and disassembled conveniently and quickly in a limited installation space, and is easy to replace, thereby improving the disassembly efficiency of the chip conveyor rear shaft, thereby improving the production efficiency of the chip conveyor.
Owner:YANTAI DEV ZONE BOSEN TECH DEV CO LTD

Welding wire roller transfer trolley

The utility model relates to a welding wire roller transfer trolley which comprises a frame body, a handrail arranged on one side of the frame body, universal wheels fixed to the bottom of the frame body, a left placing area and a right placing area arranged on the frame body, each placing area comprises an upper placing frame and a lower placing frame, each placing frame comprises two limiting rods arranged at intervals, and the interval between the limiting rods is smaller than the outer diameter of a welding wire roller. The limiting rods are arranged on the frame body so that a welding wire roller can be placed between the limiting rods, upward protrusions of the angle steel can stop the welding wire roller from rolling from the two sides, and therefore the welding wire roller can be stably clamped between the limiting rods, the lower-layer containing frame is fixedly connected to the bottom of the frame body, and the upper-layer containing frame is arranged on the frame body in a sliding mode so that the height of the upper-layer containing frame can be adjusted on the frame body in a sliding mode. When a welding wire roller is placed on the lower-layer placing frame, the height of the upper-layer placing frame is adjusted upwards, the side space of the frame body is reserved, and therefore the welding wire roller can be assembled and disassembled more conveniently, and after the welding wire roller is assembled, the height of the upper-layer placing frame is adjusted downwards, and the welding wire roller on the lower layer is limited between the upper-layer limiting rod and the lower-layer limiting rod.
Owner:JIYUAN GAOKAI IND CO LTD

Construction method of steel structure bridge appearance modeling UHPC board waterproof structure

The invention relates to a construction method of a steel structure bridge appearance modeling UHPC board waterproof structure. The construction method comprises the steps that firstly, the parting position of a UHPC board is determined, and construction preparation is conducted; 2, trimming a UHPC board seam and cleaning a base layer; 3, construction of a butyl rubber waterproof sealing adhesive tape; 4, constructing a backing material; fifthly, polyurea grouting liquid is adopted for construction joint glue injection construction; and sixthly, polyurethane sealant construction is conducted. The UHPC construction joint is free of water leakage; in addition, the overall appearance effect of the bridge is good; the effective waterproof age limit is prolonged, and the waterproof defect caused by aging of a single-structure material is overcome; repeated water leakage and repeated maintenance are greatly reduced, the construction cost is reduced, and the construction quality of engineering finished products is greatly improved; the bonding material of the construction joint is not easy to break under the influence of dynamic load; waterproof materials are convenient to obtain, the construction process is simple, and technical control requirements are low.
Owner:SHANGHAI CONSTR ENG WISDOM CONSTR CO LTD

A pipeline gas supply device, a pipeline gas filling method, and a pipeline welding method.

ActiveCN117773429BAvoid free emissionsAchieve quantitative use
This invention discloses a pipeline gas supply device, a pipeline gas filling method, and a pipeline welding method, relating to the field of welding tool technology. The pipeline gas supply device includes a gas supply pipe, which comprises a hollow gas supply pipe body and a sealing plate located at one end of the gas supply pipe body, with the other end of the gas supply pipe being the gas supply end; a sealing sleeve fitted around the outer circumference of the gas supply pipe; two fixing washers, located at opposite ends of the sealing sleeve; a pushing component located at the gas supply end of the gas supply pipe; and an expansion / contraction component. The pushing component moves towards the sealing plate end of the gas supply pipe, causing the expansion / contraction component to be squeezed by the fixing washers and the sealing plate or the pushing component, achieving a pipeline sealing effect. This device limits the gas filling range of the protective gas to between the two expansion / contraction washers, greatly reducing the amount of gas used for welding, preventing free discharge of the protective gas, enabling quantitative use of the protective gas, and reducing waste. It is applicable to the gas filling of welded bends, long pipes, and irregularly shaped pipelines.
Owner:TAIAN AEROSPACE SPECIAL VEHICLE CO LTD

A reusable strip concrete kick form fixture

ActiveCN224606039UEasy to get materialsQuick access to materials
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.
Owner:CHINA CONSTR EIGHTH BUREAU TIANJIN CONSTR ENG CO LTD

An engine drive device

The invention discloses an engine driving device, including an active part and a passive part, wherein the active part includes an active shaft, an active sleeve, and an active wheel, and the inner hole of the active sleeve is a tapered inner hole; the passive part includes a passive sleeve and a passive wheel, and the passive sleeve is slidably sleeved on the active shaft, and the outer wall of the left section of the passive sleeve matches the tapered inner hole of the active sleeve, and a conical limiting convex ring is provided on the middle section of the active shaft, and a limiting groove is provided in the inner hole of the passive sleeve; a plurality of radial through holes are provided on the passive sleeve, and a short shaft is provided in each radial through hole; a plurality of radial locking inner holes are also provided on the outer wall of the left section of the passive sleeve, and a locking pin is provided in each radial locking inner hole; a plurality of radial locking outer holes are provided on the wall of the tapered inner hole of the active sleeve, and when the passive bearing is in the left limit position, the plurality of radial locking outer holes are connected and communicated with the plurality of radial locking inner holes. The invention has the advantages that the active part and the passive part can be quickly engaged or disengaged.
Owner:ANHUI JIANGHUAI NAVISTAR DIESEL ENGINE CO LTD

Cyclamen tissue culture propagation method with ovules as explants

The invention discloses a cyclamen tissue culture propagation method taking ovules as explants, and belongs to the technical field of plant tissue culture. The method comprises the steps of ovule inoculation, callus induction and screening, bud induction and proliferation, strong seedling culture, rooting induction and acclimatization and transplantation. According to the method, casein hydrolysate nutrition supporting, dynamic hormone regulation and control, bud cluster-shaped proliferation, strong seedling rooting, combination of in-bottle seedling hardening and out-bottle seedling hardening, transplanting matrix improvement and other methods are adopted, and an effective new way is provided for improving the cyclamen tissue culture inoculation survival rate and the seedling emergence survival rate.
Owner:HEBEI ACAD OF FORESTRY SCI

Nanometer groove device capable of efficiently preventing waves and filtering foam

The utility model relates to a nano-groove device capable of efficiently preventing waves and filtering foam, which comprises a nano-groove, a plurality of groups of wave-preventing assemblies are sequentially arranged in the nano-groove from top to bottom, each wave-preventing assembly comprises a circular porous flat plate, a porous vertical plate is arranged above the porous flat plate, and the porous vertical plate is arranged above the porous flat plate. The porous vertical plate is vertically arranged on the central axis of the porous flat plate, the left inclined vertical plate and the right inclined vertical plate are arranged on the left side and the right side of the porous vertical plate respectively, and the bottom of the left inclined vertical plate and the bottom of the right inclined vertical plate are arranged on the same central axis of the porous vertical plate. A lower-layer porous vertical plate and a left-right inclined vertical plate which are symmetrical to the upper part of the porous flat plate are arranged below the porous flat plate. According to the utility model, the whole wave is decomposed into gentle and stable small-amplitude wave, and nano liquid foam generated by vibration is repeatedly adsorbed and released, so that gas and liquid are effectively separated, the foam is broken, and the effects of wave prevention and foam filtration are achieved.
Owner:NANTONG BINTAI TECHNOLOGY CO LTD

A drip irrigation and growth bucket fixing frame for abutment cushion stones of a bridge pier

This application relates to a drip irrigation curing bucket fixing frame for a bridge pier bearing pad, comprising: a frame body; a base installed at the bottom of the frame body; and a fixing assembly including a sleeve, a clamping block, a movable rod, and a limiting member. The sleeve is installed on the side of the base away from the frame body and is inserted into the anchor bolt hole of the bearing pad. The sleeve has a through hole in its wall, and the clamping block is movably installed in the through hole along the radial direction of the sleeve. The movable rod has a first part and a second part arranged along the axial direction, the diameter of the first part being larger than the diameter of the second part. The movable rod is movably inserted into the sleeve along the axial direction, so that when the movable rod moves, it switches between the first part and the second part abutting against the clamping block. The limiting member is installed on the sleeve to limit the position of the movable rod. This utility model can switch between the fixed and relaxed states of the fixing frame without damaging the structure of the bearing pad itself.
Owner:CHINA RAILWAY FIFTH GROUP SECOND ENGINEERING CO LTD +1

Portable cable laying device

The utility model belongs to the technical field of cable laying, and discloses a portable cable laying device, which comprises a central shaft steel pipe, a horizontal reinforcing rib, a positioning stirrup, a horizontal anti-falling steel bar, a vertical steel bar frame, a piston and a lifting ring structure, the anti-falling steel bars at the middle upper part are connected by adopting a welding connector mode so as to be detachable when a cable is placed, finally, a preformed hole with the diameter of 20mm is horizontally reserved at the top of the steel pipe to serve as a piston for placing a hanging ring, and the related steel bars are twisted steel bars with the diameter of 22; when the device is used for laying the cable in the tunnel, only one forklift is needed to be matched with 2-3 persons to complete the work, the operation is simple, convenient and more flexible, the labor and time consumption during manual laying can be greatly reduced, and the problems of cable damage and the like caused by improper traction force control during mechanical laying can be solved.
Owner:CHINA RAILWAY 14TH BUREAU GRP LARGE SHIELD ENG CO LTD

Soft lamp strip and stair with same

The utility model belongs to the technical field of lamps, and discloses a soft lamp strip and a stair with the soft lamp strip. The flexible lamp strip comprises a flexible base, a light-emitting assembly and a light uniformizing piece, a mounting groove is formed in the flexible base, the light uniformizing piece is embedded in the mounting groove, a mounting cavity is defined by the light uniformizing piece and the mounting groove, the light-emitting assembly is arranged in the mounting cavity in a penetrating mode, one end of the light-emitting assembly is electrically connected to a power source, and light emitted by the light-emitting assembly penetrates through the light uniformizing piece and then irradiates the external environment. Under the action of the light uniformizing piece, light rays irradiated to the outside can be uniform, and high attractiveness and good visual impression are achieved. In addition, the flexible base can be bent and cut at will, can be installed at any cambered surface or plane position, and has good applicability. Meanwhile, the whole structure is simple, manufacturing materials are easy to obtain, cost is low, and wide-range application and popularization can be achieved.
Owner:SHENZHEN GK LIGHTING CO LTD