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64 results about "Lifting capacity" patented technology
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As suggested by the name, the lifting capacity of a machine refers to the maximal weight that it can safely lift. For optimal results when it comes to using a crane, be sure to identify its lifting capacity. Failing to do so can result in serious damage to the machine or even serious injury.
Loader load process prediction method based on simulation data driving
The invention relates to the technical field of data simulation analysis, in particular to a simulation data driving-based loader load process prediction method. The method comprises the following steps that a loading lifting capacity optimization mechanical relation model is established based on structure parameters of the skid steer loader; establishing a multi-domain loader oil way-dynamics simulation coupling model; and carrying out loading machine lifting mechanical collaborative optimization processing on the multi-domain loading machine oil way-dynamics simulation coupling model through the loading lifting capacity optimization mechanical relation model so as to obtain a loading machine working condition multi-domain collaborative simulation model. Transmitting the loading machine working condition multi-source load data to a loading machine working condition multi-domain collaborative simulation model to analyze loading machine multi-domain collaborative simulation load process characteristic data; and based on the loader multi-domain collaborative simulation load history characteristic data, establishing a loader multi-domain collaborative precision optimization load history prediction mapping relationship, and generating an optimized loader multi-domain collaborative load history prediction model. According to the invention, accurate prediction of the loading process of the loader is realized.
Owner:SHANDONG WECAN TECH
Multi-stage gripper shoe type reaming vertical shaft heading machine
The invention discloses a multi-stage gripper shoe type chambering vertical shaft heading machine, and belongs to the technical field of vertical shaft heading. The equipment comprises a tunneling module used for reaming excavation of a vertical shaft; the lining module is arranged above the tunneling module and used for subsequent pouring lining of the wall face of the vertical shaft, and the lining module comprises a step changing unit; the rear matched supporting columns are arranged between the tunneling module and the lining module, and the rear matched supporting columns are used for connecting the tunneling module and the lining module and providing supporting points for descending and propelling of the subsequent lining module; according to the invention, during the tunneling process, the weight of the lining module is directly transmitted to the double-layer gripper shoe assembly in the tunneling module through the rear supporting column, so that the requirement on the hoisting capacity of a wellhead is reduced, and the well wall lining support closely follows the excavation operation, so that the bareness time of surrounding rock is shortened; in the step changing process, the weight of the tunneling module is borne by the lining module and does not depend on the integrity and strength of the rock stratum in front of the cutterhead any more, and the construction safety is improved.
Owner:HANGZHOU EAST CHINA UNDERGROUND ENG INTELLIGENT EQUIP RES INST CO LTD +2
Auxiliary crane and installation method of arm laying frame of auxiliary crane
The invention relates to an auxiliary crane and a mounting method of an arm laying frame thereof, which comprises the following steps of: before a ship enters water, mounting a main body on a ship deck; a supporting tool is manufactured according to the theoretical height of an arm placing frame of the auxiliary crane; the supporting tool is installed to a designated position on a ship deck, and the arm placing frame is installed to the supporting tool; one end of the suspension arm is connected with the main body, and the other end of the suspension arm is folded and installed on the arm placing frame; and stringing, wiring and debugging of the auxiliary crane are completed. After the ship is launched, the arm placing frame is separated from the supporting tool; and after the arm placing frame is separated from the supporting tool, the arm placing frame is hoisted to the theoretical installation position of the ship broadside through the auxiliary crane. According to the installation method, construction operations such as fixing of the arm placing frame, installation of the suspension arm and threading of the steel wire rope can be completed before the ship is launched, and installation of the arm placing frame can be achieved through the hoisting capacity of the auxiliary crane after the ship is launched. Therefore, the overall installation procedure of the ship auxiliary crane is moved forward, the construction cost is greatly reduced, and the ship building period is shortened.
Owner:HAIYANG CIMC RAFFLES OFFSHORE +4
Force limiting electric control system
The utility model discloses a force limiting electric control system, and aims to provide a force limiting electric control system which solves the influence of the lifting capacity on the stability of a whole vehicle in the engineering machinery and agricultural machinery industries. The system comprises a power controller which is used for providing a stable power supply for the control system; the controller is connected with a control valve block and is electrically connected with the power controller; the operating handle is electrically connected with the controller; the force limiter is electrically connected with the controller; the force limit display is electrically connected with the controller; the big arm oil cylinder group is electrically connected with the control valve block; and the accessory oil cylinder group is electrically connected with the control valve block. The utility model has the beneficial effects that the influence of the lifting capacity on the stability of the whole vehicle in engineering machinery and agricultural machinery industries is solved, and the stability of the whole vehicle is greatly improved.
Owner:LOU XIAO ZHONG GONG YOU XIAN GONG SI
Movable sliding table for carrying mold
The utility model discloses a movable sliding table for carrying a mold, and belongs to the technical field of carrying devices. Comprising a walking track which is provided with a mold production station and a mold replacement station; the moving platform is movably arranged on the walking track, and the moving platform is used for bearing a mold and transferring the mold between a mold production station and a mold replacement station; and the at least two fixed platforms are symmetrically arranged on the two sides of the mold replacement station of the walking track and are respectively used for bearing a to-be-replaced mold and receiving a replaced mold. Compared with a traditional traveling crane, the movable sliding table design specially considers the carrying requirement of a large mold, it is guaranteed that the large-weight mold can be stably borne and transferred, and the problems caused by the fact that the traveling crane is limited by the lifting capacity are effectively solved.
Owner:NINGBO FANGLI TECH
Disassembly-free counterweight device capable of shifting on load for crane
The utility model discloses a dismounting-free on-load displacement counterweight device for a crane. The counterweight device comprises a vehicle body, a crane main body is mounted on the vehicle body, supporting assemblies are symmetrically arranged at the bottom end of the rear part of the vehicle body, a connecting plate is arranged on the vehicle body through an adjusting mechanism, a counterweight assembly is arranged on the connecting plate, and the connecting plate is connected with the vehicle body through a positioning assembly. The position of the counterweight assembly can be conveniently adjusted according to use requirements, the lifting capacity and stability of the automobile crane can be remarkably improved by adjusting the position of the counterweight device, the operation performance of the crane can be improved by adjusting the counterweight position, the vibration of an arm frame can be reduced by optimizing the counterweight position, and the service life of the crane is prolonged. The stability and safety of the crane are improved, the crane is relatively simple and convenient, positioning and fixing can be carried out after adjustment is completed, and firmness during use is ensured.
Owner:CHANGCHUN SHUANGLONG SPECIAL PURPOSE VEHICLE MFR
Lifting device for rescue ship
ActiveCN224062340UImprove space utilizationReduce space consumptionLife-savingWinding mechanismsLifting capacityMarine engineering
The utility model discloses a lifting device for a rescue ship, and relates to the technical field of marine rescue equipment, the lifting device comprises a climbing rod arranged on the rescue ship, a support frame arranged at the bottom of the climbing rod and a bottom plate mounted on the rescue ship, and a plurality of limiting sleeves for mounting lifting ropes are symmetrically and fixedly mounted on the climbing rod. According to the lifting device, articles at one end of the lifting rope can be lifted while discharging is conducted through the lifting rope, lifting operation can be completed, assemblies easy to mount, dismount and replace are adopted, then the assemblies can be flexibly combined according to the size and requirements of the rescue boat, the foldable lifting arm is adopted, and the lifting device is convenient to use. The space occupation is reduced when the device is not used, the space utilization rate of the ship is improved, accessories such as the size, the pipe diameter and the roller skating set of the climbing rod can be replaced according to different types and main hook lifting capacity of the rescue ship, the device has the advantages of being low in cost and easy to operate, meanwhile, the efficiency is improved, and the device is suitable for various rescue scenes.
Owner:TANGSHAN ZHONGXIN SHIP SERVICE CO LTD
Lifting mechanism overcoming contact impact of two connecting rods and control method
This invention discloses a lifting mechanism and control method for overcoming the impact of two-link contact. The lifting mechanism includes an upper cover plate, a push block, two links, a base, and a scissor lift device. The lower end of the scissor lift device is connected to the base, and the upper end is connected to the upper cover plate. The two links consist of a first link, a second link, and a shock absorber. One end of the first link is connected to the push block, and the other end is hinged to one end of the second link. The other end of the second link is hinged to the scissor lift device. The shock absorber is fixedly installed on the first link. The push block is installed on a ball screw, which is driven by a motor. The control method includes the following steps: 1) Calculate the motor's initial limit speed v0 based on the shock absorber deformation S; 2) The motor runs at the initial speed. After detecting contact between the first and second links, the motor speed decreases to half of the initial speed; 3) When the motor current drops below the threshold current, the controller issues a command to increase the motor speed back to the initial speed v. The invention has a simple structure, and the shock absorber effectively reduces the additional impact from the flexible impact point. Combined with the control method, it can achieve greater lifting capacity without replacing the high-power motor.
Owner:HANGZHOU YANJIANG INTELLIGENT TECH CO LTD
Self-installation type installation method for ocean module drilling machine
PendingCN121976509ASave huge rental feesSave on rental costsArtificial islandsUnderwater structuresLifting capacityWell drilling
The invention discloses a self-installation type installation method for an ocean module drilling machine, which comprises the following steps: firstly, a constructor climbs on a platform, and assembles a first-stage small crane by utilizing manpower and a simple tool; then, the installed crane is used as a hoisting means, and a second-stage crane, a third-stage crane and a fourth-stage crane with higher hoisting capacity are sequentially installed; the fourth-stage crane is used for installing a deck fifth-stage crane serving as a platform main crane; then, a drilling support module and a larboard fifth-stage crane are installed through a deck fifth-stage crane, and a starboard fifth-stage crane is installed on the basis of the drilling support module and the larboard fifth-stage crane; and finally, the fifth-stage cranes on the left board and the right board are used for combined operation, and installation of all the remaining drilling machine modules is completed. The method thoroughly gets rid of the dependence on large floating cranes and barges through the platform self-building hoisting capacity and the step-by-step lifting installation logic, and has the advantages that the construction cost is low, the cycle arrangement is flexible, the limitation of external resources and sea conditions is small, and all cranes and modules can be repeatedly used for different platforms.
Owner:LANZHOU LS PETROLEUM EQUIP ENG CO LTD
crane
This invention provides a crane with a boom mounted on a chassis and capable of variable-amplitude rotation relative to the chassis in a vertical plane. A super-boom can rotate relative to the boom in both vertical and horizontal planes, driving the boom's variable-amplitude rotation. A lateral tension adjustment mechanism is connected between the two super-booms, capable of extending and retracting relative to the super-booms and adjusting the lateral tension length to laterally limit the super-booms in a horizontal plane. In a preparation and verification mode, the controller is configured to: acquire the operating condition command and the initial lateral tension length of the lateral tension adjustment mechanism; release the rated lifting capacity limit of the boom; and enter the lifting protection mode. This invention, by adding a lateral tension adjustment mechanism between the two super-booms, limits the outward bending tendency of the super-booms, reducing their deformation and stress. Furthermore, by matching the operating condition command with the initial lateral tension length and initial super-boom swing angle, it completes the preparation and verification of the boom before formal operation, eliminating operational safety risks and improving the crane's operational safety.
Owner:ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY CO LTD
Compact large-load omnidirectional mobile six-degree-of-freedom satellite assembly test platform device
This invention provides a compact, high-load-bearing, omnidirectional, six-degree-of-freedom satellite assembly and testing platform device, comprising an omnidirectional mobile platform with a hollow top; a lifting mechanism assembly housed at the bottom of the omnidirectional mobile platform; the lifting mechanism assembly consists of a base extending vertically from bottom to top and at least two nested lifting ends; the base of the lifting mechanism assembly slides horizontally along a translation guide assembly; one end of a pitch mechanism assembly is movably connected to the lifting end of the lower layer of the lifting mechanism assembly, and the other end is movably connected to the lifting end of the upper layer of the lifting mechanism assembly, with a height difference between the two ends; a rotation mechanism assembly and a tilt mechanism assembly are disposed on the pitch mechanism assembly, the rotation mechanism assembly having a rotating end, and the tilt mechanism assembly driving the rotation mechanism assembly to rotate along an axis perpendicular to the rotating end of the rotation mechanism assembly and connecting it to the pitch mechanism assembly. This application achieves the effect of simultaneously improving lifting capacity and maximizing space utilization in the altitude direction.
Owner:SHANGHAI INST OF SATELLITE EQUIP
Cable laying continuous pipe integrated operation device and method for shallow platform well
The invention discloses a cable laying continuous pipe integrated operation device and method for a shallow platform well. The operation device comprises a truck-mounted crane, an injection head, a chassis and a control system. The truck-mounted crane and the injection head are mounted on the chassis; the truck-mounted crane is a straight arm crane or a folding arm crane; the control system is connected with the truck-mounted crane and the injection head; a metal clamping block is arranged on the injection head; and the metal clamping block is used for hoisting an underground tool. Aiming at the condition that a small platform well site is compact, an existing cable laying continuous pipe operation machine is improved, small repair operation such as sand washing, well washing, scraping and pump changing is completed through one operation machine, the operation machine adapts to integrated construction of oil extraction operation of the small well site, meanwhile, participants can be greatly simplified, and quality improvement and efficiency improvement are achieved; in order to solve the problem of unit trafficability, a small-size unit is adopted, and a borehole with a larger full-angle change rate can be passed while the lifting capacity is kept unchanged.
Owner:PETROCHINA CO LTD
Method and system for predicting and evaluating working condition of deep sea drilling fluid lifting system
The invention discloses a working condition prediction and evaluation method and system for a deep sea drilling fluid lifting system, and relates to the technical field of ocean engineering equipment and working condition prediction and evaluation, and the method comprises the steps: generating a working condition point sample database based on a physical model; a machine learning agent model is constructed and trained; performing real-time working condition prediction and parameter optimization, and outputting a real-time working condition prediction result, a frequency recommendation result and / or a capability boundary analysis result; the working condition prediction result comprises corresponding predicted flow and predicted lift under various power supply frequencies and pump configuration combinations; the frequency recommendation result comprises an optimal power supply frequency which accords with a preset operation target set by a user and meets system security constraints; the capacity boundary analysis result comprises the lifting capacity of the deep sea drilling fluid lifting system under the limiting condition. According to the method, the operation condition points (flow and lift) of the double-pump series / parallel configuration under different power supply frequencies can be quickly and accurately predicted based on the drilling fluid density changing in real time, and the optimal power supply frequency can be intelligently recommended.
Owner:EXPLORATION TECH RES INST OF CHINESE ACADEMY OF GEOLOGICAL SCI
Intelligent counterweight crane
Owner:BEITE HANGZHOU IND MACHINERY
Wheel dolly with large lifting capacity
A wheel dolly is described for use in lifting the wheel of a vehicle and supporting the wheel on casters. The wheel dolly includes a motion conversion mechanism operative to convert rotational motion at a drive shaft into relative linear motion of two bodies that act to lift the wheel. The motion conversion mechanism can include a worm gear and lead screws. Actuation of the wheel dolly may be accomplished using a rotary power tool such as a drill or impact wrench so that the wheel dolly becomes power assisted.
Owner:COCCARO ALBERT V
Block assembling and carrying method of container ship cargo hold area
The invention relates to a block assembling and carrying method for a cargo hold area of a container ship, which comprises the following steps of: respectively assembling blocks of a bottom section, a transverse bulkhead section and a broadside section and assembling the blocks of the anti-torsion box by separating an anti-torsion box from the broadside section; and a staged carrying mode is adopted when the dock is greatly folded and carried. The problems that a traditional annular block building mode is insufficient in hoisting capacity, low in construction efficiency, difficult in precision control and the like are effectively solved, the hoisting capacity of an existing gantry crane is utilized to the maximum extent, the integrity and construction efficiency of a cargo hold area are improved, the building cost is reduced, and the building period is shortened.
Owner:江苏新扬子造船有限公司 +1
Excavator lifting threshold acquisition method and lifting alarm method
The application provides a method for obtaining a lifting threshold of an excavator and a lifting alarm method. The method comprises: obtaining attitude data of a current attitude of the excavator; obtaining a tipping load of the excavator according to the attitude data and weight data of a plurality of components of the excavator; obtaining a hydraulic lifting value of a boom cylinder according to the attitude data, the weight data and cylinder parameters of the boom cylinder; and obtaining the lifting threshold of the excavator according to the tipping load and the hydraulic lifting value. The application can obtain the lifting threshold in combination with the attitude of each part of the excavator according to the actual application scenario, improve the flexibility of obtaining the lifting threshold, and improve the lifting capacity of the excavator.
Owner:GUANGDONG FUHUA ENG EQUIP MFG CO LTD
Counterweight device and crane
The invention relates to the technical field of cranes, and discloses a counterweight device and a crane. The first balance weight is arranged on one side of the bearing frame in the first direction, and the first balance weight is connected with the bearing frame; the lifting assembly is arranged on the bearing frame, and the lifting assembly is provided with a connecting structure; the lifting assembly is arranged on the bearing frame, the first balance weight and the second balance weight which are split are used, the first balance weight can serve as a fixed balance weight to be directly connected with the bearing frame, the first balance weight can effectively improve the suspended load capacity of the crane when the crane is not fully matched, and in addition, after the second balance weight is placed on the ground, the second balance weight can be used as a fixed balance weight to be directly connected with the bearing frame. The second balance weight can be connected with the connecting structure, the second balance weight can be directly lifted to the preset position through the lifting assembly on the bearing frame, at the moment, the crane can work normally, the assembly process of the balance weight is simplified, meanwhile, additional lifting equipment does not need to be used when the balance weight is assembled, and automatic disassembly and assembly can be achieved.
Owner:HUNAN SANY MEDIUM TONNAGE HOISTING MASCH CO LTD
Automobile transport ship fixed deck three-dimensional module block construction method
The invention discloses an automobile transport ship fixed deck three-dimensional module block construction method, and belongs to the technical field of automobile transport ship fixed decks, and the method comprises the following steps: S1, in the production design stage of an automobile transport ship, a fixed deck and a related broadside outer plate are reasonably segmented and divided; s2, according to the lifting capacity of the dock, block scheme planning is conducted on the divided segments, and a plurality of three-dimensional module blocks are formed; s3, formulating a precision control target and a control main point according to the block scheme planning; s4, designing a supporting scheme and a hoisting scheme according to block scheme planning; and S5, according to the design of the supporting scheme and the hoisting scheme, the multiple three-dimensional module blocks are assembled and hoisted, and carrying of the fixed deck area of the automobile transport ship is completed. The method has the advantages that the hoisting frequency and the hoisting workload are reduced, deformation is not prone to occurring in the hoisting process, the hoisting period and the docking period are shortened, and the working efficiency is improved.
Owner:XIAMEN SHIPBUILDING IND
Hoisting trolley with safe hoisting effect
The utility model discloses a crane carriage with a safe hoisting effect, which belongs to the technical field of cranes and comprises a chassis, a plurality of rollers are arranged on two sides of the lower end face of the chassis, a twisting drum and a power motor are arranged on the upper end face of the chassis, and an output shaft of the power motor is fixedly arranged with one end of the twisting drum. The other end of the mincing cylinder is rotationally connected with a fixed block; the lower end surface of the fixed block is fixedly arranged on the chassis; two steel wire ropes are wound on the twisting cylinder, and the other ends of the steel wire ropes are connected with the chassis. When the lifting device is used, the power motor rotates to drive the winch cylinder to rotate, the winch cylinder simultaneously winds or releases the two steel wire ropes, the steel wire ropes drive the movable pulley to rotate and simultaneously drive the lifting hook to move upwards or downwards, and the purpose of lifting of the lifting hook is achieved. The two steel wire ropes lift the lifting hook at the same time, so that the lifting hook is always kept at the central position below the trolley, the lifting capacity of the lifting hook is improved, the stability of the lifting hook is improved, and the service life of the steel wire ropes is prolonged.
Owner:HENAN DAFANG HEAVY MACHINERY
Engineering construction safety monitoring method
This invention relates to the field of civil engineering technology, specifically to a method for monitoring construction safety, comprising the following steps: Step 1: Construction of a four-dimensional monitoring system and deployment of sensors, S1.1 Determining monitoring dimensions and indicators: Structural safety dimension: monitoring foundation pit settlement (accuracy ±0.1mm), slope displacement (accuracy ±0.5mm), tower crane verticality (deviation ≤0.3‰), support axial force (range 0-5000kN), and bridge deflection (accuracy ±0.2mm); Equipment operation dimension: monitoring tower crane lifting capacity, lifting height, slewing angle, wire rope wear (accuracy ±0.1mm), construction elevator operating speed, and braking performance; This invention constructs a four-dimensional monitoring system of "structural safety + equipment operation + personnel behavior + environmental parameters," integrating data from multiple sensors to improve the accuracy of identifying complex hidden dangers. Employing edge computing + 5G transmission technology, the data acquisition and platform diagnostic response time is ≤3 seconds, and the hazard warning response time is ≤10 seconds, gaining crucial time for handling emergencies.
Owner:杨智愚
Anti-overturning stability calculation method, system and equipment for hoisting operation and storage medium
PendingCN121591121ADesign optimisation/simulationSpecial data processing applicationsSelf accelerationLifting capacity
The invention discloses an anti-overturning stability calculation method, system and equipment for hoisting operation and a storage medium, and relates to the field of crane stability performance, the method comprises the following steps: based on an actual crane, establishing a crane physical model, and carrying out hoisting capacity calculation to obtain a zero moment point coordinate; based on a crane physical model and the zero moment point coordinates obtained through calculation, considering the influence of inertia force generated by hoisting load swing on the zero moment point, and establishing a dynamic model; according to the dynamic model, calculating the self acceleration of the crane and the rotation acceleration of a suspension arm, and analyzing the maximum lifting capacity in different states; on the basis of the calculated maximum hoisting capacity and zero moment point coordinates, comparing the actual hoisting capacity with the maximum hoisting capacity, judging whether the crane has an overturning risk or not, and deciding whether to give an alarm or not; the method can improve the hoisting capacity utilization rate of the crane, accurately judge the stability, reduce the overturning risk and guarantee the high efficiency and safety of the hoisting operation.
Owner:云南电网有限责任公司建设分公司
A large-lifting-capacity multi-claw lifting hook and an assembling method and a detection method thereof
This invention discloses a high-capacity multi-jaw hook and its assembly and testing methods, belonging to the field of lifting hook technology. The high-capacity multi-jaw hook includes: a boom with a thrust self-aligning roller bearing mounted on it; a hook body, including a hook body and a hook tip, which are welded together; the thrust self-aligning roller bearing supports the hook body, and the hook body is also equipped with a self-aligning roller bearing. The boom passes through the self-aligning roller bearing and the center of the hook body, allowing the hook body to rotate relative to the boom; the maximum lifting capacity is 3500t or more. This invention enables the assembly and testing of high-capacity multi-jaw hooks.
Owner:WUXI XINHUA LIFTING TOOLS CO LTD
A high-suspended decorative beam cast-in-situ and prefabricated integrated installation structure and construction method
The application provides a high-suspended decorative beam cast-in-situ to prefabricated integrated installation structure and construction method, which comprises a pair of cast-in-situ beams, prefabricated beam support wall columns are cast at the end of the pair of cast-in-situ beams, prefabricated beams are installed between the prefabricated beam support wall columns, part of integrated steel plates are embedded at the two ends of the prefabricated beams, the exposed part of the integrated steel plates is embedded in the core area of the prefabricated beam support wall columns, support assemblies for supporting the prefabricated beams and preventing overturning are installed on the prefabricated beam support wall columns, and round head lifting bolts are further embedded at the top of the two ends of the prefabricated beams. The integrated decorative beam is constructed by the method of overall prefabrication, decoration integration and one-time hoisting under the premise that the tower crane hoisting capacity meets the requirements, can fully exert the efficiency of the existing equipment on site, improve the construction quality and construction progress, can avoid erecting high-altitude operation platforms, reduce high-altitude operation, ensure construction safety, save construction period and cost.
Owner:HEFEI CONSTR ENG GRP
Bag collecting lifting appliance with automatic unhooking function
The utility model discloses a bag collecting lifting appliance with an automatic unhooking function, which comprises a horizontally arranged lifting beam, a plurality of lifting hooks are respectively arranged on two sides of the bottom of the lifting beam along the length direction of the lifting beam at equal intervals, and an unhooking mechanism is arranged on the inner wall of the lifting beam above each lifting hook; the lifting hook comprises a hook body and a stop lever, the hook body is rotationally arranged, and the stop lever seals the opening side of the hook body; the unhooking mechanism comprises an unhooking air cylinder, and a first transmission rod, a second transmission rod, a reset spring and a third transmission rod are sequentially matched with one another, so that the lifting hook has two modes of manual opening and automatic opening; according to the automatic unhooking operation method achieved through the bag collecting lifting appliance, when bagged goods are transported, the lifting capacity of lifting equipment can be effectively utilized, follow-up lifting operation and unloading operation except for connection of the goods and the lifting appliance can be controlled by an operation driver of the lifting equipment, the whole unloading operation does not need cooperation of workers, the operation efficiency is improved, and the labor intensity of workers is reduced. And the operation risk is reduced.
Owner:TIANJIN PORT HUISHENG TERMINAL
High-flow deep well pump
This invention provides a high-flow-rate deep well pump. An impeller and a guide fluid are housed within a guide seat. The inner wall of the guide seat, the impeller, and the guide fluid form a medium flow channel. This channel extends from the impeller's outlet to the guide fluid's inlet, exhibiting a variable flow-guiding structure with a gradually narrowing and then expanding flow area. When open, a check valve forms an annular outlet cavity with the pump outlet. The flow areas of the annular outlet cavity and the guide seat are arranged to be substantially the same. By maintaining a constant flow-guiding structure in the medium flow channel connecting the impeller and the guide seat, the gradually narrowing flow area enhances the swirling ability of the water discharged from the impeller, while the expanding flow area ensures the conversion of kinetic energy into potential energy, guaranteeing the pump's lifting capacity. Simultaneously, the annular outlet cavity at the check valve location ensures that the water flow exiting the guide seat maintains a substantially constant flow area, reducing energy loss and preserving the lifting capacity.
Owner:WENLING JENNFENG DIGITAL ELECTROMECHANICAL TECH CO LTD
Four-layer hoist winding system
This invention discloses a four-layer winding lifting system, comprising a drum assembly, a first pulley group, a second pulley group, a third pulley group, a fourth pulley group, a first balance pulley, a second balance pulley, a first wire rope, a second wire rope, and a hook assembly. The first wire rope passes through the first and second pulley groups at both ends and is introduced to the bottom of the drum assembly; the tension between the two pulley groups is adjusted by the first balance pulley. The second wire rope passes through the third and fourth pulley groups at both ends and is introduced to the top of the drum assembly; the tension between the two pulley groups is adjusted by the second balance pulley. The hook assembly is connected to the four pulley groups. The drum assembly includes a winding rope groove, forming four layers of winding. Each pulley group includes a fixed pulley, a movable pulley, a guide pulley, and a cable guide pulley. This invention uses a single drum assembly to achieve four layers of winding, significantly reducing costs, space occupation, and overall weight while ensuring large lifting capacity and high lifting ratio, and improving operational stability. It is suitable for heavy-duty lifting equipment.
Owner:TAIZHONG TIANJIN BINHAI HEAVY MACHINERY
Multi-split modular pumping equipment and using method thereof
PendingCN121803443APositive displacement pump componentsPositive-displacement liquid enginesLifting capacityTransportation request
The invention relates to multi-split modular pump injection equipment and a using method thereof.The pump injection equipment is characterized by comprising a heat dissipation module, a power module, a pump injection module and a base module.The traditional equipment is subjected to modular split design, and after split, a single module transportation mode is adopted, so that the transportation requirement of a carrier can be lowered; the carrier is convenient to transport; after splitting, a single module hoisting mode is adopted, so that the transportation requirement of the hoisting tool can be reduced, and hoisting is facilitated; after disassembly, the maintenance space is increased, the equipment is convenient to maintain, and meanwhile, the labor intensity of maintenance personnel is also reduced; and after being disassembled, from the aspects of transportation, hoisting and maintenance, the transportation, hoisting and maintenance cost can be reduced. According to the invention, the requirement of normal hoisting of heavy pumping equipment on a platform with limited space and hoisting capacity can be met.
Owner:SJS LTD
Shale gas pressurization system for improving lifting capacity of effective well
The utility model provides a shale gas pressurization system for improving the lifting capacity of an effective well, and relates to the technical field of shale gas pressurization. The system comprises one or more single-well membrane nitrogen making gas lift reserved ports, membrane nitrogen making equipment, a gas injection pipeline and a compressor, one single-well membrane nitrogen-making gas lift reserved opening is formed in a gas well casing gas injection opening of one affected well and is connected with the membrane nitrogen-making equipment and the compressor through gas injection pipelines respectively; the single-well membrane nitrogen gas lift reserved opening serves as a connecting channel of the membrane nitrogen gas equipment and the gas well casing pipe, and under the condition that a gas well cannot be lifted through gas injection of a compressor, high-pressure nitrogen gas generated by the membrane nitrogen gas equipment is injected into the gas well casing pipe through the single-well membrane nitrogen gas lift reserved opening so as to lift an effective well; the compressor is connected with one or more single well membrane nitrogen making lift reserved openings through gas injection pipelines and used for providing high-pressure gas. When the compressor cannot lift the gas well, the gas well is lifted through the membrane nitrogen-making high-pressure gas, and then the high-pressure gas of the supercharger is introduced for continuous liquid discharge, so that the lifting capacity of the gas well is improved.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1
Sealing system and sealing method for large, long and thin-wall hydraulic cylinder of ultra-large engineering machinery
The invention discloses a sealing system and sealing method for a large long thin-wall hydraulic cylinder of ultra-large engineering machinery, the system comprises a piston sealing structure and a guide sleeve sealing structure, and the piston sealing structure comprises a first guide sealing unit, a second guide sealing unit and a combined sealing unit which are arranged in the axial direction of a piston; the first guiding sealing unit, the second guiding sealing unit and the combined sealing unit are in sliding connection with the cylinder barrel. The guide sleeve sealing structure comprises a first guide sleeve and a second guide sleeve, one end of the first guide sleeve is embedded between the cylinder barrel and the piston rod, the other end of the first guide sleeve abuts against the second guide sleeve, the outer surface of the first guide sleeve is in sealing connection with the inner surface of the sheath, and the inner surface of the first guide sleeve is in sliding connection with the piston rod. The problems of internal leakage, oil leakage, shaking abnormal sound, cylinder barrel strain, piston rod strain and the like of a large long thin-wall cylinder of the ultra-large engineering machinery are solved, the reliability of a telescopic system of the ultra-large engineering machinery such as a kiloton crane and the like is improved, the light weight level of the whole machine is realized, and the hoisting capacity and the loading efficiency are improved.
Owner:XCMG HYDRAULICS CO LTD