4733 results about "Hoist device" patented technology

The invention relates to the technical field of cooperative control, in particular to a multi-machine cooperative control method and system for a bridge cable hoisting device, and the method comprises the following steps: collecting tension change characteristics through a distributed sensor array, extracting indexes through a sliding window algorithm to generate a response time window, and generating a cooperative time window through time sequence overlapping and speed trend adjustment. Calculating a compensation value by combining inertial parameters and acceleration to generate a trigger window, detecting tension and displacement difference, inputting the tension and displacement difference into a dynamic threshold function for screening and fusion, outputting a synchronous trigger condition, and generating a synchronous control instruction by encoding a device number and a tension change rate after timestamp alignment. According to the method, multi-node tension synchronous acquisition and normalization processing, dynamic response generation through a sliding window, boundary matching action triggering adjustment through an overlapping algorithm, response lag correction through inertia compensation, tension and displacement difference real-time detection, dynamic threshold screening and triggering condition fusion and timestamp alignment packaging instruction consistency are carried out; and the cooperation precision and the system robustness are improved.

The invention discloses a circulating type gravity energy storage transportation system which comprises a master controller, an annular rail, a high-position storage yard and a low-position storage yard, a transportation train is composed of a plurality of carriages which are flexibly connected and arranged on the annular rail, a low-position running rail is arranged on the annular rail, the high-position running rail is provided with a linear loading and unloading section, and the low-position running rail is provided with a linear loading and unloading section. A plurality of grabbing parts are arranged on the high-position storage yard and the low-position storage yard and move back and forth between the loading and unloading section and the stacking area, and the hoisting device is electrically connected with the master controller. By means of the double-circulation design of train circulation operation and heavy block rapid loading and unloading, the core pain points that an existing gravity energy storage system is not coherent in operation and low in efficiency are effectively solved, and the energy storage efficiency is improved. And a reliable system solution is provided for realizing large-scale, high-efficiency and fast-response gravity energy storage commercialized application.

The present invention provides a container-handling vehicle (9′) for picking up storage containers (6) from a three-dimensional grid (4) of an underlying storage system (1), comprising a vehicle body (13) and at least one lifting device (18) for lifting a storage container (6) from the grid (4), the lifting device (18′) comprises a lifting band drive assembly (47, 47′,31), a horizontal lifting frame (17) and a plurality of lifting bands (16a, 16b); the lifting band drive assembly (47, 47′,31) is connected to the vehicle body (13) and comprises at least one rotatable lifting shaft (22.22′); the lifting frame (17,17) comprises four corner sections (36), gripper elements (24) for releasable connection to a storage container (6), and a lifting band connector (32,32′) arranged at each of the corner sections; the lifting bands (16a, 16b) are connected to the lifting band drive assembly (47, 47′,31) and the lifting band connectors (32,32′), such that the lifting frame (17, 17) may move in a vertical direction relative to the lifting band drive assembly by rotation of the lifting shaft (22,22); wherein at least three of the lifting band connectors (32,32′) are adjustable, such that the vertical distance between the respective corner sections and the lifting band drive assembly may be adjusted.

The invention discloses an automobile hoisting device, and belongs to the technical field of engineering hoisting. The problems that the gravity center of a component is difficult to accurately determine, the position and posture control of a cargo boom is inaccurate, and the load cannot be adaptively adjusted exist in the hoisting process of an existing automobile crane. The device comprises a truck crane body, a cargo boom tail end execution module, a cargo boom body sensing module, an environment sensing module and a control module. The control module is internally provided with a dynamic gravity center correction unit, a multi-sensor fusion unit and a self-adaptive load control unit, processes related sensor data based on Kalman filtering, extended particle filtering and a model prediction control algorithm, and outputs an adjustment instruction. The method is mainly used for improving the accuracy, safety and efficiency of automobile hoisting operation.

The main object of the invention is an antenna module for an acoustic point defence system (SAD) and an acoustic system comprising said module. The antenna module comprises at least one array of electroacoustic transmitting transducers (TX) and at least one array of electroacoustic receiving transducers (RX). The arrays of transmitting transducers and the arrays receiving transducers have the characteristic of being housed in a watertight container adapted to be submerged in water when the module is in operation, for example by means of a hoist or winch device (SMMR - Launching and Recovery System). The container has watertight accesses, for example via watertight connectors, for at least one cable for a power supply signal, connected or connectable with a power supply unit external to the container, and for at least one cable for a data signal, connected or connectable to a remote control unit adapted to send commands and receive target detection states and / or signals. The antenna module comprises a local control and calculation unit housed inside the container, which local control and calculation unit is equipped with an input for the power supply signal and a port for the data signal, and is interfaced with the arrays of transducers for controlling the signal transmitted by the arrays of transmitting transducers and processing the signals received by the arrays of receiving transducers on the basis of commands received by the data port.

The invention relates to a steel structure trestle hoisting device, belongs to the technical field of bridge construction machinery, and is used for solving the technical problems that traditional hoisting equipment is low in mounting precision, poor in posture adjusting efficiency and easy to deform in structure. The device comprises a portal crane main body, wherein an electric trolley of which the stroke is matched with the width of a trestle is arranged at the lower part of a fixed cross beam; the dynamic self-adaptive balance assembly adjusts load balance in real time through a rigid frame, a three-axis tilt angle sensor, a balancing weight and an electric push rod. The lifting appliance group adopts a servo motor to drive four lifting hooks to cooperatively work, and a laser positioning assembly is combined for precise positioning; the digital twinning cooperative control system integrates prediction, control logic and a pre-judgment type intervention module through an embedded industrial controller, analyzes data of an encoder and a pressure sensor in real time, predicts deformation and gravity center shift, and dynamically regulates and controls the hoisting speed, the transverse position of a trolley and the balance weight displacement. The device is suitable for high-precision rapid installation of the large-span steel structure trestle, and the construction safety and efficiency are improved.

The present technical scheme belongs to the technical field of motor assembly equipment, and specifically relates to a top cover wire installation equipment, comprising a frame; a material moving device, which is installed on the frame and has a plurality of workstations; a positioning device, which is installed on the material moving device; a wire frame device, which is installed on the material moving device; a lifting device, which is installed on the frame or the material moving device; a locking device, which is installed on the frame; a material unloading device, which is installed on the frame and is located beside the material moving device; the top cover and the wire are positioned by the positioning device and the wire frame device, the material moving device transfers the positioned top cover and the wire to the locking device, the lifting device straightens the wire, and the locking device tightens the nut to the top cover to complete the installation of the wire; the material unloading of the product is realized by the material unloading device; a mechanized production method is adopted to replace the traditional manual nut tightening operation, so as to improve production efficiency, save manpower and time, ensure the quality of nut tightening, and improve the qualified rate of products.

The invention belongs to the technical field of gate shaft construction, and particularly relates to a one-time forming pouring system and a one-time forming pouring method. The gate groove formwork and the vertical shaft sliding formwork assembly in the one-time forming pouring system can move in the depth direction of the gate shaft and jointly define a pouring ring, and when the strength of hydraulic concrete structures corresponding to the vertical shaft sliding formwork assembly and the gate groove formwork reaches the demolding strength, the gate groove formwork and the vertical shaft sliding formwork assembly are separated. The positions of the vertical shaft sliding formwork assembly and the gate groove formwork can be adjusted through the lifting device and the hoisting device, so that the pouring space rises in the depth direction of the gate shaft, continuous pouring of the hydraulic concrete structure is met, pouring of the hydraulic concrete structure does not need to be conducted step by step, joints are avoided, and the construction efficiency is improved. The integrity and shear strength of the hydraulic concrete structure are improved, so that the construction quality of the hydraulic concrete structure in the gate shaft is ensured, and meanwhile, the construction difficulty is reduced.

The invention belongs to the technical field of transformer coil hoisting, and particularly relates to a hoisting device for transformer coil installation, which comprises a moving frame, an adjusting mechanism is installed on the moving frame, a clamping piece is arranged on the adjusting mechanism, and the clamping piece comprises an installation frame, a lifting frame, a first sliding plate, a first supporting arm, a second supporting arm and a lifting air cylinder. The lifting air cylinder is arranged on the adjusting mechanism and connected with the adjusting mechanism, the lifting frame is installed on the adjusting mechanism in a sliding mode, a piston rod of the lifting air cylinder is connected with the lifting frame, and the installation frame is arranged below the lifting frame and connected with the lifting frame. According to the transformer coil hoisting device, the transformer coil can be fixed from the interior of the transformer coil through the arrangement of the clamping piece, the transformer coil which is clamped and fixed can be hoisted under the action of the lifting air cylinder, workers do not need to carry the transformer coil again during discharging, and the hoisting efficiency and hoisting quality of the transformer coil through the transformer coil hoisting device are greatly improved.

The laminated slab construction hoisting device comprises a hoisting frame, the hoisting frame comprises two longitudinal beams arranged in parallel and two transverse beams arranged in parallel, and the two transverse beams are fixed between the two longitudinal beams to form a rectangular frame matched with a laminated slab unit in size; a lifting device and a positioning device are installed on the lifting frame, the lifting device is installed on the opposite sides of the two longitudinal beams, the lifting device comprises a winding assembly and lifting assemblies, the lifting assemblies are symmetrically arranged on the two sides of the winding assembly, the winding assembly is provided with two output ends, and the two output ends are connected with the positioning device. The lifting assemblies on the two sides are driven by the output ends of the two sides of the winding assembly correspondingly, the positioning device is used for positioning the position of the laminated slab, the laminated slab is kept stable in the lifting process, collision and damage caused by shaking are avoided, and the working efficiency is improved. And through stable hoisting and accurate positioning, the risks of shaking and collision of the laminated slab in the hoisting and mounting process are reduced, and the operation safety is improved.

The invention discloses a hoisting device and method for casting production. The hoisting device comprises a hoisting plate, two clamping pincers and an automatic telescopic piece, and two sets of inserting claws are arranged at the bottoms of the two clamping pincers in a staggered mode; two pulleys are connected below the lifting plate in a left-right sliding mode, the top ends of the clamping pincers are each fixedly connected with a set of lifting ropes, and the two sets of lifting ropes are crossed, then bypass the pulleys in the opposite side directions and are connected with the inserting claws; a rectangular ring is arranged at the crossed position of the lifting ropes, the upper end of the rectangular ring is connected with an automatic telescopic piece, a rhombic four-bar linkage is hinged to the lower end of the rectangular ring, and the left and right sides of the rhombic four-bar linkage are hinged to power arms of the clamping pincers; through the arrangement of the automatic telescopic piece, the lifting plate, the clamping pincers, the pulley, the inserting claw, the rectangular ring and the lifting rope, the automatic telescopic piece stretches out and draws back up and down, the two clamping pincers can be driven to be opened or closed through the rhombic four-bar linkage, and therefore a casting is automatically clamped or released, and time and labor are saved; in addition, through coordination and cooperation of a lifting rope, a rhombic four-bar linkage and an inserting claw, the clamping effect on the casting is improved.

The utility model discloses an assembly type concrete open-web sandwich plate hoisting device, an open-web sandwich plate is a #-shaped prefabricated part, the hoisting device comprises a hoisting tool, and the hoisting tool comprises an upper sling, an upper transverse hoisting beam, a lower sling, a lower transverse hoisting beam and an opening clamping device; the two upper transverse hanging beams are rotationally arranged in a mutually crossed manner, and the upper sling is connected to the crossed position of the two upper transverse hanging beams; the lower slings are arranged at the two ends of each upper transverse hanging beam respectively, the other end of each lower sling is connected with the corresponding lower transverse hanging beam, and an opening clamping device is arranged at the other end of each lower transverse hanging beam. By applying the hoisting device for the fabricated concrete open-web sandwich plate, the hoisting problem of the fabricated concrete open-web sandwich plate is effectively solved.

The invention provides a steel box girder hoisting device for building construction, and relates to the technical field of building construction, slings are arranged at the tail parts of a main hook and an auxiliary hook, and during hoisting, under the action of the gravity of a hoisted steel box girder, the slings move from the tail parts of the main hook and the auxiliary hook to the middle parts to drive the auxiliary hook to rotate relative to the main hook; the middle part of the auxiliary hook is gradually close to the middle part of the main hook, namely the auxiliary hook is gradually changed from a state of being separated from the main hook to a state of being combined with the main hook. The auxiliary hook is limited by the damping mechanism in the rotating process, the speed of the lifting appliance moving from the tails of the main hook and the auxiliary hook to the middle is reduced, and the damping effect is achieved, that is, the damping mechanism absorbs impact stress generated between the auxiliary hook and the lifting appliance when the lifting appliance is subjected to instantaneous impact force at the moment of lifting load; and when the lifting appliance moves from the tail parts of the main hook and the auxiliary hook to the middle part, the auxiliary hook provides lateral support and limit for the lifting appliance, so that the unstable shaking of the lifting appliance is reduced, and the influence on the lifting stability and the construction safety of the steel box girder is reduced.

The invention discloses a wind generating set anti-inclination hoisting device which comprises a hoisting frame used for hoisting a generating set and a hoisting seat connected with a hoisting hook, balancing weights are slidably connected to the periphery of the hoisting frame, and the periphery of the hoisting frame is connected with the hoisting seat through a telescopic device; an inclination sensing device and a plurality of wind direction sensing devices are arranged on the hanging bracket; the inclination sensing device detects inclination of the hanging bracket and triggers the corresponding driving device to enable the balancing weight to move in the opposite direction. Each wind direction sensing device responds to wind in a preset direction range and triggers the corresponding telescopic device to stretch out and draw back so as to counteract hanging bracket inclination caused by the wind in the direction. The device can prevent inclination caused by self weight or wind power of the wind turbine generator.

The invention relates to the field of nuclear fusion device installation, and discloses a hoisting device and a Dewar base hoisting method.The hoisting device comprises a balancing component, a hoisting shaft assembly, a hoisting tool component and a lifting assembly; the balancing component comprises a main body part and lifting lugs, at least two lifting lugs are arranged at the upper end of the main body part, and a containing space is formed between any two adjacent lifting lugs; the hanger shaft assembly comprises a hanger shaft and a retainer, and the hanger shaft is provided with a locking structure; the multiple lifting assemblies are arranged in the circumferential direction of the balancing component and comprise cable-stayed lifting mechanisms, vertical lifting mechanisms and connecting bases, the cable-stayed lifting mechanisms are connected with the main body part and the lifting tool component, the vertical lifting mechanisms are connected with the lifting tool component, and the vertical lifting mechanisms and the cable-stayed lifting mechanisms are both configured to be adjustable in length; and the connecting seat is connected with the bottom of the vertical lifting mechanism. According to the hoisting device, the Dewar base can be better horizontally adjusted, deformation of the Dewar base in the hoisting process is prevented, and the installation precision of the Dewar base is improved.

The invention relates to the technical field of construction equipment, in particular to a hoisting device for fabricated building prefabricated parts. The hoisting device comprises an annular frame, a plurality of lifting assemblies and a rotating assembly, the top side of the annular frame is connected with external hoisting equipment, the annular frame is provided with a mounting cavity and a passing hole, the mounting cavity comprises a first cavity, a second cavity and a third cavity, the passing hole is formed in the bottom side of the annular frame, and the passing hole communicates with the second cavity; each lifting assembly comprises a sliding block set, a lifting mechanism and a lifting ring rod, the sliding block sets are slidably connected with the upper side wall and the lower side wall of the second cavity, the lifting driving mechanisms are installed on the sliding block sets, and the bottom ends of the lifting ring rods penetrate through the passing holes and are used for being connected with the prefabricated parts. Each rotating assembly comprises an outer gear ring, a driven gear, a rotating driving mechanism and a connecting frame, the connecting frames are fixedly connected with the sliding sets, the rotating driving mechanisms are installed on the connecting frames, the driven gears are rotationally connected to the sliding block sets, and the outer gear rings are meshed with the driven gears.

The invention relates to the technical field of reinforcing steel bar binding hanging brackets and discloses a reinforcing steel bar binding hanging bracket and a using method thereof.The reinforcing steel bar binding hanging bracket comprises a movable support and a cross beam, the cross beam is arranged at the top of the movable support and fixedly connected with the movable support, and the reinforcing steel bar binding hanging bracket further comprises a hoisting device arranged on the cross beam and used for hoisting a reinforcing steel bar cage; the top of the hoisting device is fixedly connected with the cross beam; the fixing mechanism is arranged at the central position of the cross beam and used for fixing the hoisting device, the top of the fixing mechanism is fixedly connected with the cross beam, the hoisting device comprises an upper fixing seat, the upper fixing seat is arranged at the central position of the top of the cross beam, and the top of the upper fixing seat is fixedly connected with a double-shaft motor. According to the reinforcing steel bar binding hanging bracket and the using method thereof, different positions of a reinforcing steel bar cage can be grabbed respectively, so that the reinforcing steel bar cage is more stable when being hoisted conveniently, and the reinforcing steel bar cage is not prone to shaking greatly in the moving process.

The invention relates to the technical field of steel corridor construction, and provides an integral steel corridor air jump hoisting device and method.The hoisting device comprises a pair of lifting platforms fixed to buildings at the two ends of a steel corridor correspondingly, and a first set of lifting assemblies and a second set of lifting assemblies are arranged on the lifting platforms; the first lifting assembly and the second lifting assembly each comprise a plurality of lifters and a plurality of lifting ropes, the upper ends of the lifting ropes are connected with the lifters, and the lower ends of the lifting ropes are connected with the steel corridor. After being pre-assembled, the steel corridor is lifted through the first lifting assembly, the steel corridor and the supporting structure are staggered by a target distance during lifting, and after the steel corridor is lifted to the target height, the steel corridor jumps to the position above the supporting structure through the second lifting assembly and is integrally lowered to the supporting structure. Compared with an existing mode, the method is short in operation time and small in workload, and the steel gallery splicing quality control difficulty and the hoisting operation safety risk are reduced.

The invention relates to the technical field of hoisting, and particularly discloses a hoisting device for a converter ladle, the hoisting device comprises a lifting hook, a lifting rope for lifting the lifting hook and a lifting frame hinged to the ladle, an unhooking mechanism comprises a push rod rotationally mounted on the lifting hook, an elastic piece I, a transmission assembly and a clutch assembly, the lifting hook is connected with the lifting rope through the elastic piece I, and the lifting hook is connected with the lifting rope through the elastic piece II; after a ladle is placed on a bearing object, along with descending of the lifting rope, the transmission assembly drives the push rod to rotate forwards, after the push rod abuts against the lifting ring, the clutch assembly enables the push rod and the lifting hook to be locked, and when the lifting ring moves towards the opening of the lifting hook, the clutch assembly enables the push rod and the lifting hook to be disconnected gradually. After the push rod abuts against the lifting ring again, the clutch assembly locks the push rod and the lifting hook again, and meanwhile the push rod pushes the lifting ring out of the opening of the lifting hook; the lifting hook has the beneficial effect that the problem that the lifting hook and the lifting frame are not thoroughly separated can be avoided.

The invention provides a hoisting device and a hoisting construction method, and the hoisting device comprises a track which is laid on the surface of a roof steel structure; the tool trolley is detachably arranged on the track and can move along the track; the lifting system is arranged on the tool trolley so as to lift and hoist the unit plate; and the two leveling systems are suspended at the top of the tool trolley and are respectively arranged on the two sides of the lifting system so as to adjust the mounting angle of the hoisting unit plate. When the hoisting device is used for hoisting construction, normal use of a tower crane is not occupied, other hoisting work is not affected, and benefits are high; building construction of floors under the roof is not affected, simultaneous operation can be achieved, and the construction period is shortened; and the method is not limited by application scenes, high requirements on the flatness and the bearing capacity of a traveling surface when a truck crane and a crawler crane are used for hoisting are avoided, and the applicability is good.

The invention relates to the technical field of hoisting devices, in particular to a material hoisting method for building steel structure construction. A material hoisting method for building steel structure construction comprises the following steps that SS01, laying is conducted, specifically, before materials for building steel structure construction are hoisted, a hoisting machine and a hoisting device are preset, and the hoisting machine pulls the hoisting device through a hoisting cable, SS02, hoisting is conducted, and hoisting is conducted according to the specification of a to-be-hoisted steel structure during hoisting; and finally, the hoisting specification of the hoisting device is matched with the specification of the to-be-hoisted steel structure. The hoisting device has the beneficial effects that during hoisting operation, on one hand, magnetic attraction positioning, side clamping positioning and lower limiting during hoisting of a steel structure can be achieved, and therefore the stability of the building steel structure in the hoisting state is effectively guaranteed; and on the other hand, the hoisting device can adjust the hoisting specification during hoisting operation and is suitable for hoisting operation of special-shaped or irregular building steel structures.

The utility model belongs to the technical field of fertilizer production equipment, and provides a feeding device for water-soluble fertilizer production, which comprises a case and a hoisting device, a discharging hopper is arranged on the lower portion of the machine box, a bag passing bin is arranged on the top of the machine box, a feeding port is formed in the right side of the bag passing bin and is kept in an open state, and a rear cover plate is arranged on the left side of the bag passing bin. A sieve mesh plate is arranged at the bottom of an inner cavity of the bag passing bin, the discharging hopper is arranged below the bag passing bin, the sieve mesh plate is located above the discharging hopper, the sieve mesh plate is sunken downwards, bagged raw materials are dragged leftwards under driving of the conveying belt, the bottom of a bag is dragged on the sieve mesh plate, the bottom of the bag is scratched after making contact with a bag breaking cutter, and the bag breaking cutter is used for breaking the bag. The probability that a bag is scratched is reduced through the arc-shaped knife body, meanwhile, the bag can be scratched more quickly and smoothly through the sawtooth-shaped knife edge, raw materials in the bag rapidly extrude and expand the crevasse under the action of gravity and fall into the discharging hopper downwards, and the feeding work is completed.

A hoisting device, a movable platform and a load shipping method of the movable platform wherein the hoisting device comprises a lifting mechanism, a hook mechanism and a limiting portion, the lifting mechanism comprises a fixed structure and a movable member configured to be capable of lifting and moving relative to the fixed structure, the hook mechanism is connected with the movable member, and the limiting portion is connected with the movable member. The movable part is configured to drive the hook mechanism to move up and down. And the limiting part is configured to be in contact with or separated from the hook mechanism. And when the hook mechanism is in contact with the limiting part, the limiting part is used for preventing the hook mechanism from being freely opened, so that the hook mechanism is closed for hanging the load. In response to the movable part driving the hook mechanism to descend to be separated from the limiting part, the hook mechanism is configured to be freely opened to release the load. According to the hoisting device, the situation that the hook mechanism is suddenly opened due to an emergency, and consequently the load falls off from the air can be avoided, the safety performance is improved, automatic throwing of the load can be achieved, personnel intervention is reduced, and manpower and material resources are saved.

The invention relates to an overwater square block hoisting method and system, and belongs to overwater square block hoisting. The overwater square block hoisting method comprises the steps of hoisting a square block, obtaining the relative position relation between a hoisting device and the square block, obtaining the real-time position of the square block, obtaining the relative posture data of a hoisting system and the square block, obtaining the real-time posture of the square block and guiding square block hoisting. According to the above-water square block hoisting method, a camera, a Beidou receiver, a clinometer, an inertial navigation device and other devices are used for obtaining the relative position and posture data of a hoisting device and a square block in real time, the square block is accurately guided to be hoisted to the designed position through a data processing and feedback mechanism, and all-directional monitoring and accurate control in the square block hoisting process are achieved.

The invention relates to a large-scale deep hypothermia environment test system and method, the test system comprises a main body structure, the main body structure comprises a test section and further comprises a transfer plant, the transfer plant comprises a dry air hall communicated with the test section, the dry air hall is connected with an environment air hall through a dry-wet conversion gate, the bottom of the dry air hall communicates with a low-temperature model transformation room, and the bottom of the ambient air hall communicates with a model assembly room; a track is further arranged in the transfer plant, a model hoisting device capable of moving along the track is arranged on the track, and the model hoisting device is used for hoisting the model assembly to the test section, the low-temperature model transformation room and the model assembly room. According to the invention, the model assembly can be hoisted among the model assembly room, the low-temperature model transformation room and the test sections through the transfer plant, so that the operation safety is improved, the test efficiency is greatly improved, the model can be debugged in time in the test process, and the test effect is effectively improved.

The invention discloses a fabricated steel-UHPC external prestressing combined box girder and a construction method and application thereof, and relates to the technical field of bridge engineering, the fabricated steel-UHPC external prestressing combined box girder comprises a prefabricated steel-UHPC combined top plate, a prefabricated steel-UHPC combined bottom plate, a prefabricated steel-UHPC combined web plate, a steel diaphragm plate and an external prestressing system. The box girders are formed by combining prefabricated slabs, the prefabricated web plates are firmly connected with the prefabricated top plate and the prefabricated bottom plate through welded steel plates and post-poured UHPC, and arrangement and tensioning of external prestress are achieved by arranging steel anchor boxes and steering gears in box chambers. According to the combined box girder, the steel and the UHPC are combined to form a structural form that the steel plate is wrapped by the UHPC, and the advantages of high strength, high durability, high toughness, high compactness, low creep and the like of the UHPC and the advantages of high strength, high elastic modulus and weldability of steel are fully utilized, so that the box girder has the advantages of being excellent in structural stress performance, light in overall weight, good in durability, small in later-stage deformation, low in cost and the like. And the hoisting device is especially suitable for bridges in urban rail transit or urban railways.

The hoisting clamp comprises two sets of four-connecting-rod clamps A and B which are connected side by side in a mirroring mode through a plurality of pin shafts, and two sets of ratchet wheel self-locking mechanisms C and D are installed between the two sets of four-connecting-rod clamps and are responsible for self-locking when clamping rods of the two sets of four-connecting-rod clamps are opened and clamped; a rotating shaft is movably arranged between the two sets of four-connecting-rod clamp clamping rods; the ratchet wheel self-locking mechanism comprises a ratchet wheel, a stop pawl and a spring pressing sheet; the ratchet wheel is mounted on a pin shaft in the middle of a second clamping rod A and a second clamping rod B of the two sets of four-connecting-rod clamps; the stop pawl is fixedly mounted on a rotating shaft and is matched with the ratchet wheel to realize locking action; the spring pressing sheet is fixedly mounted on the inner side of a first clamping rod and is used for pressing the stop pawl on ratchets of the ratchet wheel; the tooth directions of the two ratchet wheels of the two ratchet wheel self-locking mechanisms are opposite. The shaft part hoisting device is simple in structure, convenient to operate, high in hoisting efficiency and high in safety, hoisting and mounting work of shaft parts is facilitated, and the mounting efficiency and the operation safety are improved.

The invention relates to the technical field of hoisting equipment, and discloses a prefabricated assembly type component hoisting device and method.The prefabricated assembly type component hoisting device comprises a cable mounting assembly and four steel cables, the cable mounting assembly comprises a pulley block, a pulley shaft and a pulley outer cover, the steel cables are arranged at the bottom of a mounting shell, and the mounting shell is arranged at the bottom of the cable mounting assembly; the mounting shell comprises an upper shell and a lower shell, an upper deflection auxiliary plate and a lower deflection auxiliary plate are symmetrically arranged in the mounting shell, and a movable disc is arranged between the two deflection auxiliary plates. Through the arrangement of the two deflection auxiliary plates and the moving disc, when the motion state of a component is changed, the moving disc can move, the length of a sling extending out of the interior of the mounting shell can be changed, the length of a steel cable is compensated, and therefore it is guaranteed that the component is in a balanced state, and the situation that the steel cable is uneven in stress is relieved.

The invention relates to the technical field of logistics box hoisting, and discloses port logistics box hoisting equipment which comprises a hanging element, the hanging element comprises a hanging bracket, a fixed seat is fixedly arranged in the middle of the hanging bracket, a transmission wheel is rotationally arranged on the fixed seat, a hoisting rope connected with a crane is wound on the transmission wheel, and a box body is arranged below the hanging bracket; a mounting shell is arranged on the hanging bracket, a first clamping plate and a second clamping plate are slidably arranged on the two sides of the opposite angles of the mounting shell correspondingly, a first rack and a second rack which are connected with the first clamping plate and the second clamping plate correspondingly are slidably arranged in the mounting shell, and a driving mechanism for driving the first rack and the second rack to slide at the same time is arranged on the mounting shell. According to the logistics box hoisting device, hoisting elements can be positioned, twist locks on the hoisting elements are aligned to lock holes in a logistics box, hoisting is facilitated, meanwhile, the box body can be limited, and the situation that the box body shakes and the gravity center shifts due to strong wind blowing during hoisting is prevented.

The invention provides a method for hoisting a tripod by using a sling, the tripod comprises a front support rod and a rear pull rod, the tripod is arranged on a crane revolving platform, the tripod is hoisted by using a hoisting device, the hoisting device comprises a front lifting hook, a rear lifting hook and the sling, and the method comprises the following specific steps: connecting the front support rod with the rear pull rod; one end of the sling is connected with the sling connecting position of the front support rod, and the other end of the sling is connected with the sling connecting position of the rear pull rod; the rear lifting hook runs to pull up the front supporting rod to be close to one side of the lifting belt, so that the lifting belt is in a straightened state; the front lifting hook and the rear lifting hook cooperatively operate to pull the front supporting rod to be close to one side of the front lifting hook, so that the rear pull rod is in a vertical state; the front lifting hook and the rear lifting hook operate together, and the front supporting rod and the rear pulling rod are moved to the position above the rotary platform; the front supporting rod and the rear pulling rod are connected with the corresponding positions of the rotary platform, and operation is convenient, safe and reliable.