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74 results about "Equipment requirement" patented technology

A method for producing small-diameter, thick-walled near-α type titanium alloy tubing and its application

This invention provides a method for producing small-diameter, thick-walled near-α-type titanium alloy tubing and its application. This method, through the use of cladding and heated rolling, increases the deformation per rolling pass, reduces the number of rolling passes, and results in a finer microstructure and better mechanical properties in the heated-rolled tubing. Simultaneously, the composite material composed of the cladding layer and silica aerogel effectively prevents the alloy rod from contacting air, avoiding further surface oxidation and reducing the thickness of the oxide layer on the rod surface. Furthermore, the composite material forms a "thermal insulation layer" on the surface of the alloy rod, preventing large temperature differences between the surface and core during heated rolling, thus ensuring better microstructure uniformity and surface quality. In this invention, the cladding process expands the selection of heating furnaces and reduces equipment requirements.
Owner:CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD

Anodic oxidation process suitable for 6061 aluminum alloy

According to the anodic oxidation technology suitable for the 6061 aluminum alloy, multi-component silica sol is adopted for conducting room-temperature dipping hole sealing and low-temperature curing on a 6061 aluminum alloy anodic oxidation film, and technology energy consumption and equipment requirements are reduced. The dense silicon network seals the membrane holes, prolongs the diffusion path of a corrosive medium and prevents the corrosive medium from invading the substrate, thereby greatly improving the corrosion resistance of the membrane layer and inhibiting pitting corrosion.
Owner:SHANDONG JIANZHU UNIV

Composite lubricating sleeve with effect of reducing pile sinking soil plug

PendingCN121992774AImprove controllabilityImprove the verticality of the pile bodyBulkheads/pilesStructural engineeringSolid particle
The invention discloses a composite lubricating sleeve with a pile sinking soil plug reducing effect. The device comprises a flexible substrate and a microstructure anti-drag layer which are compounded together, the outer circumferential face of the flexible base is attached to the inner circumferential face, close to a pile shoe, of a prefabricated pipe pile, and solid lubricating particles are evenly mixed in the flexible base. The microstructure resistance reduction layer is composed of a plurality of micro convex points which are regularly distributed on the inner circumferential face of the flexible substrate in a dot matrix shape, and solid lubricating particles are packaged in the micro convex points. According to the method, the pile sinking construction difficulty and equipment requirements can be effectively reduced, pile body deviation and equipment energy consumption caused by too large resistance are reduced, and the construction cost is directly saved. The core innovation of the method lies in that the blocking forming process is actively intervened through a multiple cooperation mechanism of solid particle lubrication, micro-convex-point blocking and micro-rolling, the controllability of the pile sinking process and the perpendicularity of a pile body are greatly improved, and the pile sinking quality is improved from the source. The composite lubricating sleeve is unique in technical path, and the technical span from passive treatment to active prevention and control is achieved.
Owner:CHINA RAILWAY BEIJING ENG BUREAU GRP TIANJIN ENG CO LTD +1

Machining device and machining method for annular eccentric spigot part

The invention discloses a machining device and method for an annular eccentric spigot part. The machining device comprises a bottom plate, a pin is arranged in the middle of the bottom plate, the annular eccentric spigot part is arranged on the bottom plate, and the annular eccentric spigot part is connected and fastened to the bottom plate through screws. The machining device is used for positioning and aligning to machine phi D1 and phi D2 so as to guarantee the dimensional precision of the phi D1 and phi D2 and the dimensional precision of the eccentric distance L between the centers of the phi D1 and phi D2 and the center of phi D. The machining device has the advantages that the requirement for machining equipment is not high, small and medium-sized machining factories have the equipment capacity, and the machining device can be used in cooperation with existing equipment for machining. And meanwhile, the machining efficiency is high, the machining cost is low, the requirement for equipment operation skills is not high, the machining quality is easy to guarantee, and meanwhile a thought for solving problems is provided for machining of similar parts.
Owner:CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD

Hanging beam for turning over steel pipe pile

The utility model relates to the technical field of pipe pile hoisting, in particular to a hoisting beam for turning over a steel pipe pile, and aims to solve the problem that the requirement for hoisting pipe pile turning-over equipment is high, the hoisting beam comprises a hoisting beam body arranged above the steel pipe pile, and two lower steel wire rope rings are arranged at the bottom of the hoisting beam body; lifting lugs used for being matched with a lower steel wire rope ring are arranged on the two sides of the steel pipe pile correspondingly, a tail steel wire rope ring is arranged on one side of the lifting beam body, a C-shaped tail slipping clamp used for being in butt joint with the tail of the steel pipe pile is arranged on the tail steel wire rope ring, and a winding and unwinding mechanism used for winding and unwinding the tail steel wire rope ring is arranged on the lifting beam body. And a hoisting mechanism matched with a crane is arranged at the top of the hoisting beam body. The overturning device has the advantages that efficient overturning operation on the steel pipe pile is achieved, the overturning process is simplified, the operation efficiency is improved, and the equipment requirement and the construction cost are reduced.
Owner:ZHONGTIAN TECH GRP OFFSHORE ENG CO LTD +1

Automatic pressing and buckling mechanism for side slope net

The utility model relates to the technical field of slope net pressing and buckling, and discloses an automatic slope net pressing and buckling mechanism which comprises a cross beam frame mechanism, the top of the cross beam frame mechanism is fixedly connected with an air storage tank and a pressure gauge, the side wall of the cross beam frame mechanism is fixedly connected with a metal plate protective cover, and the interior of the metal plate protective cover is fixedly connected with a lead screw deviation mechanism. The side wall of the cross beam frame mechanism is fixedly connected with a plurality of pressing buckle feeding mechanisms, the side wall of the cross beam frame mechanism is fixedly connected with a plurality of pressing cover feeding mechanisms, the side wall of the cross beam frame mechanism is fixedly connected with a plurality of press fitting mechanisms, and a pressing buckle feeding square pipe is fixedly connected into each pressing buckle feeding mechanism. According to the automatic press-fitting machine, through cooperative work of key structures such as the cross beam frame mechanism, the pressing buckle feeding mechanism and the pressing cover feeding mechanism, automatic operation is achieved, the production efficiency is greatly improved, flexible adjustment can be conducted according to the requirements of different products, and various press-fitting requirements are met.
Owner:DEZHOU DEHUI AUTOMATION CONTROL EQUIP CO LTD

Portable physical examination box for entry and exit personnel

The utility model discloses a portable physical examination box for entry and exit personnel, which comprises a box body, an inner container structure is arranged in the box body, the inner container structure comprises an accommodating groove arranged on the surface of the inner container structure, two ends of the inner container structure are fixedly provided with limiting blocks, and the end parts of the limiting blocks are fixedly provided with handles. Positioning seats are fixedly arranged on the two side walls of the inner container structure, limiting openings are formed in the inner wall of the box body, positioning rails are fixedly installed on the surface of the inner wall of the box body, a first hidden seat and a second hidden seat are installed in the front of the inner container structure, and a third hidden seat is installed in the rear of the inner container structure. According to the portable physical examination box for the entry and exit personnel, the inner container structures are taken out from the interior of the box body, so that the inner container structures with different structures can be conveniently mounted in the box body, and the layout of the interior of the inner container can be flexibly changed according to different physical examination tasks and equipment requirements.
Owner:黑河海关综合技术中心

Waterproof test structure for electronic product

The utility model discloses an electronic product waterproof test structure which comprises a base, a water storage tank is fixedly installed at the upper end of the base, a controller is fixedly installed in the middle of the front end of the water storage tank, a first fixing frame is fixedly installed on the upper portion of the right end of the water storage tank, and an underwater test device is fixedly installed at the upper end of the first fixing frame. A second fixing frame is fixedly installed on the upper portion of the left end of the water storage tank, a spraying testing device is fixedly installed at the right end of the second fixing frame, and a supporting device is installed on the left portion of the upper end of the water storage tank in a penetrating mode. According to the device, an underwater instrument is placed in the first test box, so that the underwater instrument can go deep into the water storage tank for soaking test, water in the water storage tank is pumped by the water pump through the water pumping pipe and is conveyed into the plurality of nozzles at the lower end of the connecting seat through the water conveying pipe, and the nozzles spray the water on the outer surface of light waterproof equipment at the moment; and a spraying test is carried out, so that the device can carry out a corresponding waterproof test according to equipment requirements.
Owner:SHENZHEN TOPFA TECH CO LTD

Auxiliary supporting device for power part of reversed loader

The utility model discloses an auxiliary supporting device for a power part of a reversed loader, and relates to the technical field of coal mining equipment. Comprising a mounting plate, a pressure detection mechanism is fixedly mounted on the lower surface of the mounting plate, first electric control hydraulic jacks are mounted at the front and rear positions, close to the right side, of the lower surface of the pressure detection mechanism through first hinge pieces, and a bottom plate is mounted between the lower surfaces of the first electric control hydraulic jacks through second hinge pieces; a driving mechanism is arranged between the first electric control hydraulic jacks, the driving mechanism is installed at the position, close to the left side, of the lower surface of the pressure detection mechanism, and angle detection mechanisms are arranged on the first electric control hydraulic jacks; the supporting function of the power part of the reversed loader is increased, the stability of the power part of the reversed loader is improved, the equipment failure rate is reduced, flexible adjustment can be conducted according to different working environments and equipment requirements, pressure generated during equipment operation can be effectively dispersed, the service life of equipment is prolonged, supporting is stable, and the effect is better.
Owner:SHANXI LUAN ANTAI MASCH CO LTD

Gasification furnace waste boiler and water cooling wall outer wall coating surfacing and laser cladding equipment

The invention belongs to the technical field of gasification furnace waste boiler and water-cooled wall outer wall coating surfacing and laser cladding, and particularly relates to gasification furnace waste boiler and water-cooled wall outer wall coating surfacing and laser cladding equipment which comprises two flexible rails, a laser cladding device and a laser cladding device, and the two flexible rails both surround a tank body in the circumferential direction and are attached to the outer side wall of the tank body; the two circumferential movement modules are in sliding fit with the two flexible rails correspondingly; the lifting motion module is arranged on the circumferential motion module; the tangential movement module is arranged at the action end of the lifting movement module; the radial motion module is arranged at the action end of the tangential motion module; the rotating module is arranged at the action end of the radial movement module; and the working head is arranged on the rotating module. In the working process, rotation of the tank body is not needed, the energy consumption and equipment requirements are low, the size is small, disassembly and assembly are convenient, the device is suitable for multi-size tank bodies, the automation level is high, positioning is accurate, the quality of welding seams or cladding layers is effectively improved, and the working efficiency is remarkably improved.
Owner:TAIYUAN UNIVERSITY OF TECHNOLOGY

Rolling compounding low-cost anti-oxidation pretreatment method for heterogeneous bimetal composite pipe

The invention discloses a rolling composite low-cost anti-oxidation pretreatment method for a heterogeneous bimetal composite pipe, and belongs to the technical field of metal material composite machining. The method comprises the following steps: polishing, cleaning and drying a to-be-compounded surface of the bimetal composite pipe, and removing an oxide layer, oil stains and other impurity attachments on the to-be-compounded surface; the two metal composite pipes are sleeved together according to the structure that the metal with the large thermal expansion coefficient serves as an inner covering layer, and the metal with the small thermal expansion coefficient serves as an outer layer, and a combined pipe blank is formed; and the interference fitting temperature of the metal pipe to be compounded is determined through calculation, the combined pipe blank is placed in a heating furnace to be heated to the interference fitting temperature, heat preservation is conducted for a certain time, and interference fitting of the combined pipe blank is achieved. According to the method, the inner-layer metal pipe and the outer-layer metal pipe are tightly attached through heating, air is exhausted, and the problem that the interface of the combined pipe blank is oxidized is effectively avoided. The method is simple in process, low in equipment requirement, outstanding in cost advantage and suitable for anti-oxidation pretreatment of heterogeneous metal pipe industrial rolling composite production.
Owner:Xinjiang Intelligent Equipment Research Institute +1

Method for detecting temperature resistance of filler for silicone sealant

The application discloses a kind of detection methods of the temperature resistance of filler for organic silicon sealant, belong to material detection technical field;Including determining the initial fineness value of filler sample, record as L0;Filler sample is baked at 150~180 ℃ condition 2~4 hours;Determine the fineness value of filler sample after baking, record as L1;If L1-L0≥5 μm, determine this filler sample after high temperature will have the phenomenon of return coarse, poor temperature resistance;If L1-L0<5 μm, then determine this filler sample temperature resistance is good;The method described in the application is simple, fast detection, low equipment requirement and accurate and reliable result;Solve the existing problems, such as operation complex, detection efficiency low and poor correlation with actual application of temperature resistance detection method of filler for organic silicon sealant.
Owner:SHANXI WEICHUANGXIN MATERIAL TECH CO LTD

HBPOP packaging method based on TMV technology

According to the HBPOP packaging method based on the TMV technology, the technology difficulty is low, the equipment requirement degree is not high, the thickness of a final product can be reduced by about 50 microns, and therefore the thickness of an electronic product is reduced. The method is characterized in that the substrate and the adapter plate are connected through a wire bonding technology, and the LPDDR chip and the adapter plate are connected through a TMV technology.
Owner:华天科技(南京)有限公司

Core holder and experimental method for thermal stress fracturing experiment

This invention discloses a core holder and experimental method for thermal stress fracturing experiments, comprising: an insulated pipe kit having a through cavity; a heating device at one end of the insulated pipe kit, and an insulation layer in the area outside the heating device; a first temperature sensor on the upper side of the area opposite the insulation layer, and a transparent glass-encased steel container on the lower side of the area opposite the insulation layer; a second temperature sensor on the heating device; a clamping device for clamping the insulated pipe kit; a piston kit disposed on the clamping device for introducing gas or liquid into the cavity of the insulated pipe kit; and a device for clamping the experimental core placed in the cavity of the insulated pipe kit. This experimental apparatus, in addition to thermal stress fracturing displacement experiments, can also meet the equipment requirements of conventional body experiments, exhibiting strong functionality.
Owner:SOUTHWEST PETROLEUM UNIV

Backpack type portable intelligent lubricating device

The utility model relates to the technical field of lubricating devices, and discloses a backpack type portable intelligent lubricating device which comprises a back plate, two sliding grooves are formed in one side of the upper end of the back plate, lead screws are rotatably arranged in the two sliding grooves and extend out of the sliding grooves, and clamping blocks are arranged on the two sides of threads of the outer walls of the two lead screws in a sleeving mode. The ends, extending out of the sliding grooves, of the two lead screws are fixedly connected with driven gears, rotating rods are rotationally arranged in the back plate, one ends of the rotating rods extend out of the back plate, the ends, located in the back plate, of the two rotating rods are fixedly connected with driving gears, and a fixing plate is placed at the upper end of the back plate. According to the device, the oil tank can be quickly detached and replaced according to needs, so that different equipment requirements are met, convenience is brought to workers, lubricating oil can be evenly stirred, the stable viscosity of the lubricating oil can be kept under the high-temperature or low-temperature condition, meanwhile, the lubricating oil adhering to the side wall of the oil tank is cleaned, and the lubricating oil can be recycled. And the loss of lubricating oil is effectively reduced.
Owner:上海诺莫科技有限公司

Quasi-brittle material dynamic fracture behavior and parameter prediction method based on equivalent area

The invention relates to a method for predicting dynamic fracture behaviors and parameters of a quasi-brittle material based on an equivalent area, and aims to solve the technical problems that in the prior art, a dynamic fracture parameter test of quasi-brittle materials such as concrete is remarkable in size effect and complex in test process, and multiple groups of test pieces and special equipment are needed. According to the method, a technical means of taking an equivalent area Ae as a core design parameter is adopted, two groups of quantitative test pieces with a specific Ae value ratio are designed, a linear analysis model of a peak load and the equivalent area is established, the dynamic fracture toughness KIC and the tensile strength ft without a size effect are synchronously determined, and a fracture total curve with 95% reliability is constructed. The method has the technical effects that the real dynamic fracture parameters of the material can be accurately measured only by a small number of laboratory small-size test pieces, the size effect is effectively eliminated, the test process is remarkably simplified, the equipment requirement is reduced, and the reliable prediction of the fracture behaviors of engineering structures with different geometric sizes is realized.
Owner:NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER

A circuit breaker integrated with an adjustable hydraulic trip unit

The application discloses a circuit breaker integrated with an adjustable hydraulic release device, and contains a circuit breaker body with an embedded adjustable hydraulic release device, a release drive mechanism and a main contact system. The adjustable hydraulic release device comprises a release device body and an intelligent control module; the release device body is provided with an oil cup, an axially movable oil cup core, an armature, a first coil and an armature, and the armature is linked with the release drive mechanism. When the first coil is electrified, a first electromagnetic force is generated, the oil cup core is pushed to move towards the armature, and finally the armature is attracted to trigger a release action to break the circuit. The intelligent control module is located at the end of the oil cup, can generate a second electromagnetic force acting on the oil cup core in the same direction or in the opposite direction of the first electromagnetic force, and realizes rated current regulation and overload protection regulation. The design not only overcomes the problem that the protection characteristics of the traditional hydraulic electromagnetic release device are fixed, but also changes the equivalent synthetic ampere-turns by using the controllable second electromagnetic force, flexibly adjusts the rated current, and meets different equipment requirements.
Owner:NINGBO QILE ELECTRIC GRP

Smart warehouse management method and system

The invention relates to the technical field of warehouse management, in particular to an intelligent warehouse management method and system. Comprising the steps of setting various spare part categories according to storage equipment requirements of a warehouse; generating a first-level management strategy according to all spare part categories, and setting a plurality of monitoring sub-areas according to the first-level management strategy; and obtaining a feedback data packet of each monitoring sub-region, and judging whether an early warning instruction of each monitoring sub-region is generated or not according to the feedback data packet. And dynamically adjusting the storage layout in the warehouse based on each spare part set storage evaluation value, thereby performing centralized storage on the spare parts with scheduling association, improving the in-out warehouse scheduling efficiency of each type of spare parts in the warehouse, and improving the management efficiency of the new energy station warehouse. The corresponding monitoring sub-model is constructed according to the storage characteristics of each spare part set, storage monitoring of different types of spare parts is realized, early warning of potential risks in a warehouse is performed in time, and the storage safety of the new energy power plant spare parts is ensured.
Owner:HUANENG XINJIANG ENERGY DEV CO LTD NEW ENERGY DONGJIANG BRANCH

High-strength and high-plasticity dual-mode magnesium alloy and orientation regulation and control method thereof

The invention discloses a high-strength and high-plasticity dual-mode magnesium alloy and an orientation regulation and control method thereof, and relates to the technical field of magnesium alloys. The orientation regulation and control method comprises the following steps: carrying out homogenization treatment and pretreatment on an as-cast AZ31 magnesium alloy to obtain a blank, and then carrying out hot extrusion deformation on the blank to regulate and control the grain orientation of the AZ31 magnesium alloy to obtain the high-strength and high-plasticity dual-mode magnesium alloy. According to the method, the grain orientation of the dual-mode AZ31 magnesium alloy is regulated and controlled through hot extrusion deformation, and stable regulation and control of the orientation of the dual-mode AZ31 magnesium alloy can be achieved on the premise that the recrystallization grain fraction and the average grain size are kept stable. By optimizing the extrusion temperature, the extrusion rate and the extrusion ratio, adjustment of a dynamic recrystallization mechanism can be achieved, and the dual-mode magnesium alloy with high strength and good plasticity balance is obtained. The method is simple, short in technological process, low in equipment requirement and suitable for large-scale production, and has good industrial feasibility and popularization and application value.
Owner:HARBIN INST OF TECH

Preparation method of 4N high-purity rhenium powder

The application discloses a preparation method of 4N high-purity rhenium powder and belongs to the field of metal processing. The method uses common 3N high-purity ammonium perrhenate as raw material, and after pretreatment, the target product of 4N can be obtained through specific pickling. The method has simple operation steps, low equipment requirement and low dependence on human operation, and can guarantee the stability of product quality in the process of industrialized scale production.
Owner:XIANDAO THIN FILM MATERIALS GUANGDONG CO LTD

A method for evaluating the fracture toughness of ceramics without prenotching

The application discloses a ceramic fracture toughness evaluation method without pre-preparing sharp notches, and belongs to the technical field of fracture mechanics performance evaluation, and comprises the following steps: testing the original strength of the ceramic; introducing a blunt notch into the ceramic, testing the tip radius of the blunt notch, and testing the apparent toughness of the ceramic containing the blunt notch; and calculating the fracture toughness of the ceramic according to the original strength, the tip radius and the apparent toughness. The application introduces a traditional blunt notch which is easy to obtain into the ceramic, tests the apparent toughness of the ceramic, and combines the original strength of the ceramic and the tip radius of the blunt notch to calculate the real fracture toughness of the ceramic. The application has strong operability and simple method, and can effectively evaluate the fracture toughness of the ceramic after omitting the pre-preparation of the sharp V-shaped notch or the straight-through crack which is complicated, complex and has low success rate. The application can provide technical support for the toughness evaluation of brittle materials in the research and development and selection of the brittle materials, and the processes of preparing the blunt notch and testing the apparent toughness and the tip radius all have low requirements on equipment.
Owner:ANHUI WANQI TIANCHENG TECH CO LTD

Umbilical cable small-scale model and test method and test device thereof

An umbilical cable small-scale model disclosed by the present invention comprises a cylinder, steel wires, bases and a sheath, the number of the bases is two, the bases are arranged at the two ends of the cylinder respectively, one base is fixed at one end of the cylinder, the other base is arranged at the other end of the cylinder in a sliding manner, the number of the steel wires is multiple, and the steel wires are wound on the cylinder through the two bases. And the sheath is fixedly sleeved outside the cylinder wound with the steel wire. The invention further provides a testing device for the small-scale model of the umbilical cable, the testing device is provided with the universal testing machine used for carrying out compression testing on the small-scale model of the umbilical cable and the compression device, and the compression device comprises an upper pressing disc arranged on the universal testing machine in a lifting mode through an upper connector and a lower pressing disc movably arranged on the universal testing machine through a spherical seat. And the lower pressure plate and the upper pressure plate are matched to carry out a pressing test of the umbilical cable model. According to the method, the mechanical property test can be completed without large equipment and test places, the mechanical property of the full-size umbilical cable can be reflected, and the method has the characteristics of good economical efficiency, low equipment requirement, repeatability and the like.
Owner:RES INST 708 OF CHINA STATE SHIPBUILDING CORP

Automatic control method and system for methanol aqueous solution

The invention discloses an automatic control method and system for a methanol aqueous solution, and belongs to the field of automatic control systems. The system comprises a raw material unit, a mixing unit, a storage unit, a liquid supplementing unit, a detection unit and a control unit. The raw material unit is used for storing pure methanol and deionized water and monitoring the liquid level change in real time through a liquid level sensor; the mixing unit is used for accurately mixing methanol and water according to a set proportion through cooperative work of an infusion pump and a stirrer; the storage unit is used for storing the prepared methanol aqueous solution and conveying the methanol aqueous solution to the reaction device through an infusion pump; the liquid supplementing unit adjusts the liquid supplementing amount through a liquid supplementing pump, an electromagnetic valve and an overflow valve to ensure that the methanol aqueous solution is supplemented in time according to equipment requirements; the detection unit monitors the state of the methanol aqueous solution in real time through concentration, liquid level, temperature and pressure sensors; the control unit receives signals of all the sensors, carries out data processing and adjusts the working state of all the units of the system, and it is ensured that the proportion, the liquid level, the flow, the temperature and the pressure of the methanol aqueous solution are always in the ideal state. Through automatic control and real-time feedback adjustment, errors caused by manual operation are eliminated, and the efficiency of the methanol-to-hydrogen equipment and the quality of hydrogen are improved.
Owner:SUZHOU HYDROGEN NEW ENERGY TECHNOLOGY CO LTD

A method for healing defects in a nickel-based hardfacing alloy layer

PendingCN122322816ADefect healingHeat conservation
The present application relates to a kind of nickel-based hardfacing alloy layer defect healing method, comprising the following steps: S1 cleaning sample: the nickel-based hardfacing alloy layer sample with defect is washed, and the dirt on the surface of sample is removed;S2 vacuumizing: the nickel-based hardfacing alloy layer sample with defect is placed into high vacuum furnace, and vacuumizing is prepared for test;S3 heating, heat preservation: according to test scheme, the sample is heated to corresponding temperature, and heat preservation is carried out;S4 cooling: after test, the sample is cooled to room temperature with high vacuum furnace, and vacuum is broken, and the sample is taken out and observed defect healing condition.The whole repair process of the present application is simple, does not need additional mechanical processing process, the requirement of equipment is low, cost is low, and defect repair efficiency is high.
Owner:LANZHOU UNIVERSITY OF TECHNOLOGY

A device for improving the end resistance of a solidified soil composite pipe pile and a construction method thereof

This invention relates to the field of construction, specifically to a device and its construction method for improving the end resistance of solidified soil composite pipe piles. It comprises a ring-shaped cylinder with a ring tightly fitted to its inner wall, and an end plate device that can be placed on the ring. The ring is composed of multiple sector-shaped blocks of equal size. By using multiple sector-shaped blocks, the size and weight of individual components can be effectively reduced, and compared to a single ring, it eliminates the need for crane handling, reducing the difficulty of placing it into the cylinder and the requirements for handling equipment. The cross-section of the sector-shaped blocks is door-shaped or mouth-shaped. The end plate device consists of three sector-shaped end plates of equal length with acute-angled tails, from top to bottom: end plate layer one, end plate layer two, and end plate layer three. The tail ends of end plate layers one, two, and three are movably connected together by a rotating shaft. End plate layers one, two, and three can be assembled into a complete circle when fully unfolded.
Owner:SUQIAN SUYUAN IND CO LTD +2

Gravel soil accumulation body shallow-buried tunnel entering construction method and supporting structure

The invention relates to the technical field of tunnel construction, in particular to a gravel soil accumulation body shallow-buried tunnel hole entering construction method and a supporting structure, and the construction method comprises the steps that an arch frame is installed, specifically, survey lofting, hole digging, foundation formwork erecting and pouring and steel arch frame erecting are included; advance support construction comprises the steps of surveying and lofting, advance small guide pipe manufacturing, drilling, advance small guide pipe installation and grouting, when advance small guide pipes are installed, the advance small guide pipes are arranged at equal intervals along the two sides of the middle line of the tunnel and numbered, the advance small guide pipes of odd numbers are small in external insertion angle, and the advance small guide pipes of even numbers are large in external insertion angle; and lagging jack guniting is conducted, specifically, a steel bar net rack is arranged on the periphery of the steel lagging jack, guniting concrete is hung, and after the work is completed, concrete is sprayed to the inner wall of the steel lagging jack. A brim structure without a large pipe shed is adopted, and on the basis that zero-excavation hole entering is achieved, the equipment requirement is low, flexibility is high, and the construction speed is high.
Owner:CCCC SECOND HARBOR ENGINEERING CO LTD

Maintenance platform

The invention discloses a maintenance platform, and relates to the technical field of maintenance devices. The device comprises a working table board; the supporting assembly is connected with the working table top; the adjusting assembly is arranged in the supporting assembly, and the adjusting assembly is used for adjusting the length of the supporting assembly; the adjusting assembly comprises a first movable plate and a second movable plate, wherein one end of the first movable plate is connected with the supporting assembly; one end of the second movable plate is connected with the other end of the first movable plate, and the other end of the second movable plate is connected with the supporting assembly. Flexible adjustment of the length of the supporting assembly is achieved through the adjusting assembly, different working environments and equipment requirements are met through cooperation of the working table top and the supporting assembly, time consumed due to mismatching of the equipment size is shortened, the height of the platform can be rapidly adjusted according to the actual situation of the equipment, the maintenance period is further shortened, and the working efficiency is improved. And the working efficiency is improved.
Owner:SHENYANG BLOWER GRP AUXILIARY MASCH COMPLETE ENG CO LTD +1

Intelligent monitoring method for surface mine slope stability

The invention relates to the technical field of mine slope monitoring, and provides an intelligent monitoring method for surface mine slope stability, which comprises the following steps: step 1, determining the position of a slope drainage well group; step 2, geological exploration; thirdly, the position of a drainage well is reasonably designed; 4, a drilling machine well completion technology is reasonably selected; 5, normal drainage requirements are guaranteed; 6, designing a deep displacement monitoring hole and a stress hole; and step 7, constructing an intelligent combined monitoring system capable of accessing remote monitoring. According to the method, deep integration of drainage well construction and monitoring is achieved, and the dual functions of efficient drainage and accurate monitoring are achieved. Water-containing stratum information is accurately mastered through an early-stage high-density electrical method or transient electromagnetic exploration, drainage well parameters are optimized in combination with a theoretical algorithm, and the drainage requirement is guaranteed. The well completion technology is combined with stratum conditions and monitoring equipment requirements, the equipment installation and survival effects are ensured, and automatic rainfall operation and real-time monitoring of water pressure and deep displacement are achieved in cooperation with an intelligent system.
Owner:JARUD BANNER ZHAHANAOER COAL IND CO LTD

Construction method for efficiently and losslessly pulling out offshore pile foundation

The invention discloses an offshore pile foundation efficient lossless pulling construction method which comprises the steps of early-stage preparation, pretreatment of soil around a pile, pile pulling operation, pile hoisting and storage and the like, the soil around the pile is pretreated through a high-pressure injection system and a vibration generation device, pile pulling resistance is reduced, and pile pulling efficiency is improved. The special device comprises a ship body supporting system, a high-pressure injection system, a vibration generating device, a clamping mechanism, lifting equipment, a monitoring control system and the like. The problems that in an existing offshore pile pulling technology, efficiency is low, the equipment requirement is high, the influence on the environment is large, and safety is poor can be solved, efficient, safe and environment-friendly operation of offshore pile pulling is achieved, and remarkable economic benefits and social benefits are achieved.
Owner:SHANGHAI FOUNDATION ENGINEERING GROUP CO LTD