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42 results about "Uplift force" patented technology

Uplift force. An uplift force is any upward pressure applied to a structure that has the potential to raise it relative to its surroundings. Uplift forces can be a consequence of pressure from the ground below, wind, surface water, and so on. Water pressure can exert an uplift force on a structure due to high rainfall,...

Construction method for dismantling bent cap of bridge

The invention relates to a bridge bent cap dismantling construction method, and belongs to the technical field of bridge reconstruction and extension construction. The method aims at solving the technical problems that a traditional dismantling process is low in efficiency and high in safety risk, and a reserved structure is prone to being damaged. According to the technical scheme, the method comprises the steps that cutting, blocking and hoisting equipment is planned according to the size and weight of the bent cap; a diamond wire sawing machine is adopted for cutting, and lifting force is continuously applied by hoisting equipment in the whole cutting process; construction is carried out according to the sequence that a bent cap main body part between the pier columns is cut off firstly, then a supporting system and an operation platform are erected on the pier columns, and then bent cap cantilever parts on the outer sides of the pier columns are cut off; and finally, crushing treatment and column top fine chiseling are conducted on a platform, the elevation is accurately controlled, and the steel bars are stripped. The method is mainly used for safe, efficient and accurate dismantling of the old bent cap in highway and urban bridge reconstruction and extension projects.
Owner:THE SECOND ENG CO LTD OF THE CCCC THIRD HIGHWAY ENG

Detection system and detection method for pulling resistance of anchor bar pile

The invention discloses an anchor bar pile pulling resistance detection system and detection method, and relates to the technical field of data processing, first to fourth sensing modules are connected with a data processing module, and the first to fourth sensing modules are arranged on anchor bar pile pulling resistance detection equipment; the first sensing module measures the pulling resistance of the anchor bar pile; the second sensing module measures displacement data; the third sensing module measures the tension of the anchor bar pile; a fourth sensing module measures temperature data of the anchor bar pile in the drawing process; and the data processing module is used for drawing an anti-pulling force-displacement curve according to the anti-pulling force and displacement data, drawing a pulling force-displacement curve according to the pulling force and displacement data, and determining a detection result according to the anti-pulling force-displacement curve, the pulling force-displacement curve and the temperature data. According to the technical scheme, the detection efficiency can be improved, and the detection result can be obtained in time; and meanwhile, relevant data in the anti-pulling test process can be intelligently and automatically obtained, so that the detection accuracy can be improved.
Owner:SINOHYDRO BUREAU 5

Rapid stress enhancement connection type tubular pile pull-out test research and development and stress monitoring equipment

The invention relates to the technical field of pile pull-out test equipment, in particular to rapid stress enhancement connection type tubular pile pull-out test research and development and stress monitoring equipment which comprises a counter-force mechanism and a pile holding mechanism arranged below the counter-force mechanism, and the pile holding mechanism comprises a pile holding circular hoop, a plurality of linear drivers and a plurality of clamping pieces; the clamping pieces can adapt to pipe piles with different diameters by increasing or decreasing the number or adjusting the thickness, special clamps do not need to be replaced for the pipe piles with different specifications, and the adaptation cost of equipment is reduced; the stress monitoring unit monitors the stress change of the contact part of the clamping piece and the tubular pile in real time, the stable force transmission effect of the counter-force mechanism is combined, the tubular pile damage risk caused by over-clamping or the slipping problem caused by under-clamping can be found in time, the stress states of the tubular pile under different pulling forces can be accurately recorded, the test data has higher reference value, and the test efficiency is improved. And the adaptability of the equipment and the safety of the test are both considered.
Owner:GUANGZHOU TESTING CENTRE OF CONSTRUCTION QUALITY AND SAFETY CO LTD +2

A composite foundation for iron towers with short piles and inclined anchors and its construction method

This invention relates to the field of tower foundation technology and discloses a composite foundation for a tower with short piles and inclined anchors, and its construction method. The foundation pit has a central pit at the bottom center, and several sets of side inclined pits are evenly distributed along the sides of the bottom of the foundation pit. Self-tensioning inclined anchor assemblies are installed within the side inclined pits. A central connecting frame between the tops of the self-tensioning inclined anchor assemblies is fixed with bolts. A positioning base assembly is installed within the foundation pit, positioned between the outer sides of the tops of the self-tensioning inclined anchor assemblies. A short pile steel reinforcement assembly is centrally located inside the positioning base assembly. All components of this invention can be prefabricated and then assembled on-site, improving construction efficiency and forming a unified structure with enhanced structural strength. The self-tensioning inclined anchor assemblies are anchored in the foundation, thereby bearing the horizontal load and uplift force transmitted from the tower, increasing the contact area between the foundation and the soil, better adapting to complex geological conditions, and improving the stability and bearing capacity of the foundation.
Owner:HUIZHOU POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CO LTD +1

Anti-pulling pile bearing capacity testing system and method

The present application relates to a kind of uplift pile bearing capacity test system and method, including to be tested uplift pile, steel cross beam, support pier, bottom expansion foundation, cushion block, through jack, pulley block device, steel wire rope, tension sensor, displacement sensor, fixed clamp, reference beam and cushion stone and other structures.The present application ingeniously utilizes the principle that pulley block has labor-saving and direction-changing in physics, by setting unit pulley block consisting of movable pulley, fixed pulley and reversing pulley, in combination with the mechanical lifting action of through jack, doubling the uplift force on the top of pile is realized, and the effect of timesaving is achieved.The present application has the characteristics of high testing efficiency, safe and reliable, cost saving, etc., and can be applied to the field test of different types of uplift pile bearing capacity.
Owner:ZHEJIANG UNIV CITY COLLEGE

Method for installing offshore wind turbine jacket

The application relates to a method for installing and constructing an offshore wind turbine jacket, which can quickly determine whether the jacket is blocked during lowering by judging whether the sling is not stressed, the jacket is not lowered to the design elevation or the jacket is inclined; if the jacket is blocked, a tugboat is controlled to apply a transverse force to the low point of the jacket, so that the lateral extrusion surface of the pile wall of the pile of the insertion tip and the foundation pile is directly separated, the static friction balance is broken, and the gap between the insertion tip and the pile wall is enlarged; the main hook synchronously applies a vertical lifting force, and the jacket is quickly pulled out of the blocking position after the gap is formed. The combined effect of the lateral separation and the vertical pulling of the application can more efficiently break through the blocking threshold, reduce the hard friction damage between the pile wall and the insertion tip, and shorten the unblocking time. The scheme of the application uses two types of conventional offshore construction equipment, i.e., a crane ship main hook and a tugboat, without the need of customizing special devices, and the cooperative operation of the tugboat and the crane ship does not need complex linkage control, so that the equipment investment cost is reduced.
Owner:POLY CHANGSHA PORT & SHIPPING ENG CO LTD

Parameter determination method of cable-stayed anchor pile foundation and cable-stayed anchor pile foundation

The application provides a parameter determination method and a cable-stayed anchor pile foundation, and the method comprises the following steps: obtaining a preset anchor plate diameter and a preset pile end soil penetration depth of the cable-stayed anchor pile foundation, and a pile foundation inclination and other foundation structure parameters of the cable-stayed anchor pile foundation; obtaining a pull-out ultimate bearing capacity of the cable-stayed anchor pile foundation under the conditions of the preset anchor plate diameter and the pile end soil penetration depth according to the preset anchor plate diameter, the preset pile end soil penetration depth, the pile foundation inclination and the other foundation structure parameters; obtaining a preset uplift force acting on the cable-stayed anchor pile foundation; performing compliance determination on the preset anchor plate diameter and the preset pile end soil penetration depth according to the size relationship between the preset uplift force and the pull-out ultimate bearing capacity, and obtaining target parameters of the cable-stayed anchor pile foundation. The scheme of the application meets the use requirements of the flexible photovoltaic support cable-stayed foundation, reduces the material consumption and cost, and can accurately determine the parameters of the cable-stayed anchor pile foundation, thereby facilitating the selection and construction.
Owner:INNER MONGOLIA ELECTRIC POWER SURVEY & DESIGN INST

A rapid deployment and recovery device for a shipboard underwater exploration device

The application discloses a quick deployment and recovery device for a shipborne underwater detection equipment; the system comprises a deck fixed base, a vertical guide mechanism, a sliding bearing mechanism, a folding and extending mechanism and a traction mechanism. In the deployment process, the traction mechanism is started to release the cable, the sliding bearing mechanism stably slides down along the vertical guide mechanism under the action of gravity and the auxiliary thrust of a pneumatic spring. The folding and extending mechanism is automatically unfolded under the action of gravity and water flow and is fixed by a mechanical locking mechanism, so that the underwater detection equipment is accurately sent to a predetermined working depth. In the recovery process, the electric recovery mechanism is started to wind the cable, the traction mechanism provides active lifting force, the sliding bearing mechanism is driven to go up along the vertical guide mechanism, and finally the equipment is completely recovered to the deck base. The folding and extending and sliding bearing mechanisms are cooperated to effectively solve the problem of lack of flexibility of a traditional marine equipment fixing mechanism, and the operation simplicity and efficiency of the device are obviously improved.
Owner:SOUTH CHINA UNIV OF TECH

Design method of directional maintenance ladder for storage tank and maintenance ladder

The invention discloses a design method of a directional maintenance ladder for a storage tank and a maintenance ladder. The maintenance ladder comprises a lower bearing platform and an upper bearing platform installed above the lower bearing platform, an elastic flat plate sliding support is arranged between the lower bearing platform and the upper bearing platform, wind load limiting columns are arranged at the two ends of the upper bearing platform, and limiting short columns used for limiting are arranged at the two ends above the lower bearing platform; earthquake limiting brackets used for preventing overturning are arranged on the inner sides of the limiting short columns, and a plurality of steel ladder steel columns used for fixing the LNG storage tank are arranged in the middle of the upper bearing platform; the method comprises the following steps: S1, setting parameters of the storage tank limiting maintenance ladder; s2, setting boundary conditions; s3, inputting the parameters in the S1 and the boundary conditions in the S2 into finite element software to extract shearing force and uplift force borne by the limiting short column; and S4, calculating a limiting short column, an earthquake limiting bracket and a wind load limiting column. According to the design method, the overall overhaul ladder can be prevented from overturning; the problem that when the LNG storage tank displaces, the overhauling ladder is greatly deformed and even damaged is effectively solved.
Owner:CHINA TIANCHEN ENGINEERING CORPORATION LTD

Physical model test device for testing anti-pulling performance of non-soil-squeezing precast pile foundation

The utility model relates to the technical field of pile foundation engineering, and particularly discloses a physical model test device for testing the anti-pulling performance of a non-soil-squeezing precast pile foundation, which comprises a multifunctional cement grouting machine, a slurry storage pool, a vacuum pump, a water storage tank, a vacuum water pumping pipe, a model box bottom plate, a model box side plate and a high-strength toughened glass plate, and the output end of the multifunctional cement grouting machine is communicated with the outer surface of the slurry storage tank. According to the large-diameter non-soil-squeezing uplift pile construction device, an axial load is applied through an axial jack, loads of the upper portion and the lower portion of a model pile are collected through an upper pressure sensor and a lower tension sensor, pile body strain is collected through a pile body strain gauge, and a load displacement curve (Q-S curve) of a static load test of an uplift pile is obtained; the bearing capacity and the side friction resistance of the while-drilling pipe pile are obtained through calculation, the displacement of the uplift pile and the displacement of the soil layer can be obtained through the dial indicator and the laser displacement meter respectively, and therefore the contribution effects of different uplift measures on the uplift force are judged.
Owner:GUANGDONG UNIV OF TECH +4

Gas injecting system

PCT designated stageWO2026013030A1Bulkheads/pilesSoil scienceUplift force
A gas injecting system (10) for use with installing a foundation (100) having a body (12) for insertion into soil (200) in an insertion direction during installation. The body (12) having a toe (22) at its distal end (20). The toe (22) defining an aperture (24) into an internal cavity (18), wherein soil (200) is displaced laterally into a displaced soil suspension region (26) within the internal cavity (18) when the toe moves through the soil (200) during installation. The gas jetting system (10) comprises a plurality of outlets for injecting a gas into the displaced soil suspension region (26) for applying a lifting force to soil (200) suspended in the displaced soil suspension region (26) for reducing soil suspension pressure at the toe (22).
Owner:ORSTED WIND POWER AS

Pile extractor for removing driven metal piles

A pile extractor (12) for removing a pile (14) from a ground surface. The pile extractor includes a frame (15) arranged to seat upon the ground surface and a pile engaging arrangement (16) operably coupled to and supported by the frame (15). The pile engaging arrangement (16) includes rams (18) which actuate associated clamps (20) arranged to releasably engage with the pile (14) in a reciprocal motion, the reciprocal motion including a lifting condition in which the rams (18) extend to engage the clamps (20) with the pile (14) and exert a lifting force on the pile (14), and a release condition, in which the rams (18) are relatively and simultaneously lowered which likewise simultaneously releases the clamps (20) and allows the clamps (20) to be lowered relative to the pile (14) and reset to the lifting condition. A related method of use is also disclosed.
Owner:CN TECH PTY LTD

Kilometer-level multifunctional multi-process reverse circulation power head and drilling method

The invention relates to the technical field of geological exploration equipment, and discloses a kilometer-level multifunctional multi-process reverse circulation power head and a drilling method, the drilling depth of the kilometer-level multifunctional multi-process reverse circulation power head reaches the kilometer level, and the drilling torque and the lifting force are the maximum at home and abroad. Comprising a box body which is internally provided with a speed change structure, an input end and an output end. The speed changing structure is connected with the motor set, and gear shifting switching is executed through the hydraulic motor. The upper end of the box body is connected with an output end structure, and the lower end is connected with a hydraulic motor and an input end structure. The input end structure is provided with an air inlet pipeline, an air ball valve, a back flushing connector, an air box and a slurry inlet. The output end structure is provided with a slurry cooling pipeline and a rock debris discharging pipeline. A control system comprising a data acquisition module, a logic matching module and an action execution module is used for acquiring geological parameters in a hole in real time and automatically regulating and controlling mechanical actions of a bottom layer, and a hydraulic motor is used for driving a gear shifting shaft and a gear shifting connecting rod; and the first driving gear is shifted to slide to a preset final position along the input shaft to complete separation or physical engagement with the driven gear, so that the power requirements of different processes on the rotating speed and the torque are met, and switching of different functions is realized. The action execution module gives a back flushing instruction to switch the air ball valve to guide air to enter the middle pipeline of the double-wall drill rod and the bottom channel of the drill bit to be discharged outwards to clean blockage of the middle channel of the drill rod and blockage in a hole. Slurry flows through a cooling pipeline in the box body to complete heat exchange of the power head box body and flows into a drill hole, cooling of the power head is completed, and the slurry circulation process requirement is met. By switching inlet ends and outlet ends of different pipelines, switching among three drilling processes of air reverse circulation, gas lift reverse circulation drilling and wire line coring drilling is achieved, and different geological requirements are met.
Owner:INST OF EXPLORATION TECH OF CHINESE ACAD OF GEOLOGICAL SCI

Apparatus, system and method for translating and rotating an object

PendingCN121712709ALifting devicesPhysicsUplift force
Apparatus, systems, and methods for translating and rotating an object (650) to position the object (650) to an upright position. In an embodiment, an apparatus (100) may include a substrate (120) configured to be attached to a clamping vehicle; a surface plate (110); and a rotator (130) configured to rotatably connect the surface plate (110) to the base plate (120) such that the surface plate (110) is rotatable about an axis independent of the base plate (120). In embodiments, the surface plate (110) is positioned against the proximal end of the object (650), and a compressive force may be applied to the object (650) such that the surface plate (110) presses against the proximal end of the object (650). A lifting force may be applied to lift the object (650) upward to cause the surface plate (110) to rotate the object (650) toward the upright position while maintaining a secure retention of the object (650). The upright object (650) may then be lowered in an upright position.
Owner:SHANGQUAN TECHNOLOGY CO LTD

Adjustable overflow weir structure of intercepting well

ActiveCN224549291UStream flowSewage
The utility model provides a kind of adjustable overflow weir structure of intercepting well, it is related to overflow weir technical field, including overflow weir frame, still include adjusting assembly, adjusting assembly includes the sliding slot being opened in the inside of overflow weir frame, sliding groove is slidably connected with sliding plate on sliding slot, the outside fixed connection of sliding plate has connecting ring, the outside fixed connection of connecting ring has connecting rope;Power component, power component includes the sliding rail being fixedly connected in the outside of overflow weir frame, the outside slidably connected with first sliding block of sliding rail, the inside fixed connection of first sliding block has connecting frame, the outside fixed connection of connecting frame has counterweight;Such design is converted into the lifting force of sliding plate upwards by pulley with the gravity of counterweight downwards, so that smaller sewage flow can be earlier, more through weir plate below into intercepting pipeline, increase the interception rate of dry season sewage, effectively solve the problem that sewage is lost due to weir height cannot be reduced in dry season.
Owner:常州市君杰水务科技有限公司

Foundation deformation experimental equipment and use method

The invention relates to the technical field of foundation detection tests, in particular to foundation deformation experimental equipment which comprises test equipment, the test equipment comprises a simulation foundation and an uplift pile which are arranged on the foundation, and a test box, a jack and a pressurization steel beam which are arranged on the simulation foundation; the interior of the test box is hollow and filled with a filling body, a loading cover plate and a bottom plate are arranged on the upper side and the lower side of the test box respectively, the pressurizing steel beam is composed of a first steel beam body and a second steel beam body which are distributed up and down, the first steel beam body and the second steel beam body are placed in the X-axis direction and the Z-axis direction, and the first steel beam body and the second steel beam body are arranged in parallel. An uplift anchorage device is installed between the second steel beam and the uplift pile. According to the foundation deformation experimental equipment and the using method, the loading body is automatically ejected out through hydraulic driving, the traditional manual prying and smashing mode is changed, time and labor are saved, efficiency is high, the stress conditions, including vertical pressure, possible pulling resistance and the like, of a foundation in actual engineering can be truly simulated, and the experimental result has higher reference value.
Owner:SHANXI SURVEY DESIGN & RES INST

A remote site and offshore welfare unit having integral frame and load-bearing securing and lifting means

The invention describes a welfare unit (1) such as a toilet, shower or storage facility having an enclosure defining a unitary body (2) with access door (7) and means for attaching (4) the enclosure / welfare unit to a lifting hoist. The means for attachment is adapted to transfer lifting forces evenly throughout the enclosure via frame elements (25) moulded integrally with the unitary body to provide a rateable lifting weight (safe working load) of said enclosure substantially greater than the inherent weight of the enclosure, including access door and fittings associated with the function thereof. There is further describes a method of forming a welfare unit comprising an enclosure having frame elements integrally formed therein. The method includes preferred moulding steps, formation of the means for attachment to a lifting hoist and selecting interior components to define the utility of the welfare unit.
Owner:ALDISS WILLIAM JONATHAN

Multi-source sensor fused hydraulic grab bucket soil hardness control system and method

The invention provides a multi-source sensor fused hydraulic grab bucket soil hardness control system and method, and relates to the technical field of intelligent control of ocean dredging equipment.The system comprises a data acquisition module, a feature fusion module and a decision module; the feature fusion module can calculate the hardness index of the soil texture of the dredged soil which is being excavated in real time according to the measurement data of each sensor, and the decision module is the center of the whole adaptive control system and can convert the soil texture hardness index generated by multi-source sensing fusion into an executable grab bucket control instruction. Through multi-sensor data fusion, seabed soil hardness is sensed in real time, grab bucket operation parameters (lowering speed, bucket opening and closing opportunity and lifting force) are dynamically adjusted, the problems of energy waste, low efficiency and equipment damage caused by artificial experience errors in traditional dredging are solved, and rock geology (gt; and high-efficiency and environment-friendly excavation under the pressure of 60 MPa is realized.
Owner:CCCC GUANGZHOU DREDGING CO LTD +1

Single-anchor-tower-foot-plate structure and uplift bearing capacity design method thereof

PendingCN122629875AArchitectural engineeringVertical shear
The present application relates to the technical field of power transmission line tower structure, and particularly relates to a single-anchor-bolt tower footing plate structure and a design method for uplift bearing capacity of the single-anchor-bolt tower footing plate structure, the single-anchor-bolt tower footing plate structure comprising a main material connecting part, a shoe plate, a tower footing plate, a stiffened plate and a single-anchor-bolt; the shoe plate and the tower footing plate are connected by welding of two adjacent edges to form a hinged constraint boundary, the hinged constraint boundary only transmits vertical shear force and does not transmit bending moment; the shoe plate converts the vertical uplift force into linear distribution force through the hinged constraint boundary and transmits the linear distribution force to the tower footing plate; the tower footing plate is plastically bent and deformed under the combined action of the linear distribution force and the concentrated counterforce provided by the anchor bolt, a plastic yield line failure mode is formed when the tower footing plate reaches the ultimate bearing capacity, the vertical uplift force is converted into the axial tension of the anchor bolt and transmitted to the foundation concrete. The present application realizes the single-anchor-bolt tower footing plate structure and the precise quantification of the uplift bearing capacity of the tower footing plate in a compact space by considering the hinged characteristics of the shoe plate and the influence of load eccentricity.
Owner:STATE GRID ECONOMIC TECH RES INST CO LTD

Auxiliary mounting device for tunnel ventilation pipe

The utility model discloses an auxiliary installation device for a tunnel ventilation pipe, and relates to the technical field of pipeline installation. The supporting frames are symmetrically arranged at the top of the base; the mounting frame is arranged on the common top of the two groups of supporting frames; the fences are arranged on the two sides of the mounting frame; the hanging mechanisms are arranged at the two ends of the mounting frame; the placing frame is arranged in the middle of the top end of the base; the hydraulic lifting columns are symmetrically arranged on the two sides of the base and connected with the bottom of the fence; the protective ladders are mounted at two ends of the fence; the fixing mechanism is arranged in the placing frame; the supporting assembly sleeves the outer side of the supporting frame and is located at the top of the base; and the control panel is arranged on one side of the base. According to the utility model, the hanging mechanism is arranged, so that the hanging mechanism can uniformly bear the weight of the ventilation pipe in the placing frame, the ventilation pipe in the placing frame is kept stable in the ascending process, and the problems of inclination, shaking and the like of the ventilation pipe caused by non-uniform lifting force are avoided.
Owner:CHINA RAILWAY BEIJING ENG BUREAU GRP NO 2

An ice layer vertical ice breaking test device suitable for field conditions

The application discloses an ice layer vertical ice breaking test device suitable for field conditions and belongs to the technical field of sea ice mechanical property testing. During use, an output torque is provided by a motor, the torque is transmitted to a lifting machine through a steering device and a connecting shaft, the lifting machine converts the horizontal torque into a vertical lifting force and drives a I-beam to move in the vertical direction, and vertical loading on the ice layer is realized. The lifting machine and the I-beam are flexibly connected through a flange universal joint. The I-beam moves in the vertical direction and applies a vertical loading force on the ice layer through an eccentricity-preventing pressure head. A generator provides power for the system, and the data of the pressure head and a displacement sensor during the test are recorded through a data acquisition device. The application provides a load which is perpendicular to the ice surface and vertically upward in the form of a reaction force, is not limited by water depth during use, can still provide a vertical stable loading force under the condition that the ice surface is uneven and avoid unintended bending moment on the tool itself, is more suitable for field ice test, and can reduce the requirements for waterproofing and corrosion resistance.
Owner:DALIAN UNIV OF TECH

Lifting mechanism of double-wheel milling and stirring drilling machine for underground diaphragm wall construction and double-wheel milling and stirring drilling machine

The invention discloses a double-wheel milling and stirring drilling machine lifting mechanism for underground diaphragm wall construction and a double-wheel milling and stirring drilling machine, and relates to the field of underground diaphragm wall construction equipment.The double-wheel milling and stirring drilling machine lifting mechanism comprises a winch, a steel wire rope, a mast, a pulley A, a pulley B, a sliding frame A and a movable pulley, the pulley A and the pulley B are both installed on the mast, one side of the sliding frame A is slidably connected with the mast, and the movable pulley is installed on the sliding frame A; the sliding frame A is connected with the drill rod, and one side of the sliding frame B is connected with the mast in a sliding mode; by arranging the sliding frame B and the limiting piece A, the inherent contradiction that the lifting force and the operation speed cannot be achieved at the same time in a traditional lifting mechanism is solved, the auxiliary time of no-load operation is greatly shortened, a drilling tool can rapidly pass through unstable stratums such as a loose sand layer and a water-rich pebble bed, and the working efficiency is improved. And the static time of the drilling tool in the hole is greatly shortened, so that the hole collapse risk is remarkably reduced, and the hole forming rate and the construction efficiency are improved.
Owner:XUZHOU JINGAN HEAVY IND MFG CO LTD

A method for dismantling a bottom tower of a wind turbine by prestressed anchor bolts

The application provides a prestressed anchor bolt type fan bottom end tower tube dismounting method, which comprises the following steps: step S001: connecting the tower tube by using a crane, so that the crane keeps five tons of lifting force on the tower tube; step S002: dismounting the anchor bolt nut connected with the tower tube flange; step S003: digging a hole on the tower foundation concrete, installing a hydraulic jack in the hole, and making the hydraulic jack abut on the lower end surface of the tower tube flange; step S004: keeping the lifting force of the crane greater than the weight of the tower tube; step S005: starting to lift the tower tube flange by using the hydraulic jack until a gap is generated between the tower tube flange and the concrete; and step S006: dismounting the tower tube first, and then dismounting the hydraulic jack. The prestressed anchor bolt type fan bottom end tower tube dismounting method can release the bonding force between the tower tube flange and the tower foundation concrete first, and then the tower tube is dismounted by using the crane, so that the safety of construction is ensured.
Owner:西北水利水电工程有限责任公司

A flange lifting device

The utility model relates to hoist device technical field discloses a flange plate hoist device. In the application, a kind of flange plate hoist device includes: pull seat, center guide rod, floating pipe, connecting seat, straight connecting rod, L-shaped connecting rod, movable support structure, spring, down pressure piece, the flange plate hoist device of the application, when disassembling device, spring provides the force of moving up to floating pipe, connecting seat, so that it keeps shrinked state, when hoisting operation, movable support structure is no longer with floating pipe clamping, but sliding fit, no longer provide the force of moving it upwards, make it unfold and tighten under the action of dead weight or lifting force, complete the positioning of hoisting.
Owner:SHANDONG KAIJIE FORGING CO LTD

Large slip form construction platform lifting monitoring method and lifting device

PendingCN122035728AForce balance monitoringincrease displacementSafety devices for lifting equipmentsLoop controlSynchronous control
The invention provides a large slip form construction platform lifting monitoring method and a lifting device, and belongs to the technical field of building construction. According to the technical scheme, the large slip form construction platform lifting monitoring method is characterized in that an electric servo jack, a slip form lifting main controller and a distributed unit controller are arranged on a slip form construction platform, and synchronous lifting of the slip form construction platform is achieved in combination with a supporting rod, a tilt angle sensor and a vertical height monitoring sensor. In the lifting process, lifting displacement and lifting force are collected, displacement and stress closed-loop control is carried out, and meanwhile, whether the next stage of lifting construction is started or not is judged by combining posture monitoring, synchronous deviation correction and concrete strength monitoring data. The system has the beneficial effects that the electric servo jack, the slip form lifting main controller, the distributed unit controller and the like are arranged on the slip form construction platform, so that synchronous control, stress balance monitoring, posture monitoring and real-time deviation correction early warning in the lifting process of the slip form construction platform are achieved.
Owner:THE FIRST COMPARY OF CHINA EIGHTH ENG BUREAU LTD +1

Apparatus, system, and method for the translation and rotation of an object

ActiveUS12577089B2Lifting devicesPhysicsUplift force
Apparatuses, systems, and methods for the translation and rotation of an object to position the object into an upright position. In embodiments, an apparatus can include a base plate configured to attach to a clamp vehicle, a surface plate, and a rotator configured to rotatably connect the surface plate to the base plate such that the surface plate is able to rotate independently of the base plate about an axis. In embodiments, the surface plate is positioned against a proximate end of the object, and a compressive force can be applied to the object, causing the surface plate to press against the proximate end of the object. A lifting force can be applied to raise the object upwards to cause the surface plate to rotate the object toward the upright position while maintaining a secure hold on the object. The upright object can then be lowered in an upright position.
Owner:UPRIGHT TECHNOLOGIES LLC

An autoclaved aerated concrete cross-cutting device

The utility model discloses a kind of autoclaved aerated concrete cross-cutting devices, belong to aerated concrete block technical field.The utility model includes frame and is set on the lifting mechanism and cutting structure of frame;Wherein, the lifting mechanism is used to drive cutting structure to move up and down;The cutting structure is used to cutting to green body;The cutting structure is slidably arranged in the side of frame, and the cutting structure is connected with counterweight mechanism;The counterweight mechanism includes pulley and traction rope;Wherein, the pulley is arranged in frame;One end of the traction rope is connected with cutting structure, and the other end is connected with counterweight block after passing pulley.The utility model is through the setting of counterweight mechanism, no matter how the weight of cutting device, can be through increasing or reducing the gravity of counterweight block to offset partial lifting force, to effectively reduce the power of motor, save energy.
Owner:ANHUI KEDA IND CO LTD

Anti-seepage structure for connecting steel plate and concrete

The utility model belongs to the field of water conservancy and hydropower engineering, and relates to an anti-seepage structure for connecting a steel plate and concrete, which is applied to the joint of a bottom plate of a channel and a bottom plate of an aqueduct and is characterized in that on the basis of prolonging the laying length of an original steel plate, the original steel plate is transformed into double-layer steel plates which are arranged in parallel up and down; the geomembrane is clamped in the double-layer steel plate, and the part, extending out of the double-layer steel plate, of the geomembrane forms a self-locking anchoring component in channel concrete, so that the situation that a geomembrane anti-seepage structure is damaged due to the fact that a concrete block is damaged by uplift force is prevented, the problem of connection leakage of a channel and an aqueduct is solved, and large-area dismantling and rebuilding of lining materials on the two sides are avoided.
Owner:NORTHWEST ENGINEERING CORPORATION LIMITED