334 results about "Crane Equipment" patented technology

The disclosure relates to the technical field of tower cranes, and particularly to a tower crane device and a mounting method and a control method thereof. The tower crane device comprises a machine platform (1), a tower column (2) and an arm frame hoisting apparatus, the tower column (2) is rotatably connected to the machine platform (1) and the tower column (2) rotates around a center of the tower column relative to the machine platform (1), the arm frame hoisting apparatus comprises a tail frame structure (3), a sleeving frame structure (4) and an jib structure (5), the tail frame structure (3) and the jib structure (5) are both connected with the sleeving frame structure (4), the sleeving frame structure (4) is connected with the tower column (2), and the sleeving frame structure (4) ascends and descends in a height direction of the tower column (2).

The invention discloses a new energy access lower harbor area transformer insulation performance and service life evaluation method, which comprises the following steps: firstly, establishing a wind and light storage AC / DC hybrid micro-grid equivalent simulation model, and quantifying a composite action mechanism of new energy fluctuation and harmonic characteristics on dynamic loss and hot-spot temperature rise of a transformer; analyzing a harmonic loss mechanism of the transformer in different operation modes; secondly, constructing a quay crane and field crane operation simulation model, and analyzing the harmonic characteristics of bridge crane equipment and the influence of the harmonic characteristics on the harmonic distortion rate of the power distribution network; then, on the basis of the data, a transformer hot-spot temperature dynamic calculation model is established in combination with bidirectional power flow characteristics; and finally, calculating transient temperature distribution of the transformer through a flow field-temperature field coupling method, and constructing a multi-physical field coupled insulation aging rate model to realize evaluation of the residual life of the transformer. The method solves the problem that the traditional method cannot quantify the bidirectional power flow and harmonic wave composite aging effect.

The invention relates to the technical field of crane equipment health monitoring, in particular to a crane running state health monitoring system and method. A sensing data acquisition unit is used for acquiring a winding drum vibration harmonic component, a steel wire rope leakage magnetic field gradient and a pulley block real-time load; the data analysis unit performs rotating speed synchronous variational mode decomposition on the vibration component to extract resonance characteristics, performs temperature and stress double-compensation correction on a leakage magnetic field gradient, quantifies an energy entropy attenuation rate through wavelet packet decomposition, constructs a phase difference model of a load and vibration to output a slip risk phase offset, calculates a load spectrum damage cumulant, and calculates a load spectrum damage cumulant; and after the four heterogeneous features are fused, a residual life coefficient is output through a dual-channel convolution-long and short-term memory hybrid neural network, and an execution unit triggers crane speed reduction control when the residual life coefficient is lower than a threshold value, so that the problems of insufficient multi-source data fusion and lack of dynamic compensation in the traditional technology are solved, and the fault early warning accuracy is improved.

The present invention relates to the field of crane equipment, and in particular to a sway reduction and stabilization device for a crane hoist. In view of the problem in the prior art that a steel wire rope will inevitably shake during the speed regulation of a trolley, a sway reduction and stabilization device for a crane hoist is provided. Two first auxiliary ropes that are cross-arranged with each other are respectively arranged on the front and rear sides between a stabilization plate and a mounting plate. The lower ends of the first auxiliary ropes are respectively fixedly connected to fixed plates. When the crane trolley drives the hoist to move, the fixed plates are pulled mutually by the first auxiliary ropes that are cross-arranged with each other. Under the action of a two-way ratchet self-locking structure, while ensuring that the first auxiliary rope can be retracted and released by a first winding wheel, the pulling force from the first auxiliary rope cannot drive the first winding wheel to rotate, so that the first auxiliary rope can effectively maintain traction, reduce the shaking of the hoist during movement, and enhance the stability of the hoist during movement.

The invention discloses an intelligent and safe hoisting monitoring method for a large-tonnage I-beam, relates to the field of construction safety, is based on a monitoring system consisting of a sensing layer, a transmission layer, a data layer, a decision layer and an execution layer, and comprises the following steps: deploying the sensing layer, constructing the transmission layer, configuring the data layer, constructing the decision layer and responding to the execution layer. Structural stress is monitored through a high-precision strain gauge and a distributed optical fiber sensor, the posture is monitored through an MEMS tilt angle sensor and a six-axis gyroscope, the state of the lifting appliance is monitored through a tension sensor and a visual recognition sensor, the environment is monitored through an ultrasonic anemograph and a laser radar, and multi-dimensional data collection is conducted through a displacement sensor monitoring device. Full-scene monitoring of the state of the I-shaped beam, the performance of a lifting appliance, the working environment and crane equipment is achieved, potential risks are captured without dead corners, the accuracy and reliability of data under complex working conditions are ensured, the problems that traditional monitoring data are prone to being interfered by the environment and insufficient in precision are solved, and the safety coefficient is increased.

The invention relates to the technical field of line crane warning, in particular to an overhead line trend intelligent crane sentry warning method and system based on Beidou positioning. The method comprises the steps that base station data information including power transmission tower pole and line trend data is acquired based on Beidou positioning, and construction crane position information is monitored in real time; respectively constructing a power transmission line corridor model and a warning tape model based on the acquired data; carrying out model integration and optimization on the constructed power transmission line corridor model and the warning tape model; generating early warning information based on the integrated and optimized model; and carrying out sentry alarm on the construction crane based on the generated early warning information. Real-time monitoring of numerous power transmission tower and power transmission line corridor areas, including power grid power transmission line channel display, crane equipment map point location display, crane early warning track display and the like, can be realized.

The application discloses a kind of unmanned vehicle accurate parking methods of port crane scene, through the setting of desired accurate parking position, adjust the distance and direction of vehicle, guide vehicle accurate parking, through the position that template map has saved desired accurate parking, and the plane parameter of crane, improve the accuracy of vehicle stop, can improve the efficiency of loading and unloading box operation, increase the economic benefit of single vehicle unit time, simultaneously, through laser radar, the point cloud data of crane can be directly scanned and obtained, realize the accurate parking of port crane scene, do not need to make any modification to crane equipment and install any equipment, there is no special requirement to crane structure, size etc., with good universality, the characteristics such as low introduction cost.

The invention relates to the technical field of crane equipment, and provides a movable portal crane which comprises a portal support frame and a track, rails are laid and installed on the two sides of the bottom end of the gate-type supporting frame, braking mechanisms are arranged at the two ends of the bottom of the gate-type supporting frame, rolling wheels are movably installed at the bottom end of the gate-type supporting frame, and an electric hoist is movably installed at the top of the gate-type supporting frame. By arranging the lubricating mechanism, when a steel wire rope lifts a heavy object, through cooperation between a second gear and a forward and reverse rack, a fourth gear rotates forwards, the second rack is driven to move towards the middle at the same time, extrusion plates are made to get close, a piston is pushed to move towards one side through extrusion of a connecting rod, and lubricating oil is sprayed out from an oil outlet; when the steel wire rope moves upwards, the steel wire rope is fully contacted with the surface of the steel wire rope, so that lubrication is uniform, friction between the steel wire rope of the portal crane and parts such as a pulley and a winding drum is reduced, and the service life of the steel wire rope is prolonged.

The utility model discloses a crane equipment near-electricity alarm based on field intensity detection in the technical field of near-electricity alarms, which comprises a crane, a signal receiving component is mounted at one end of a crane body of the crane, an induction transmitting module is arranged at one end of a suspension arm of the crane, and the signal receiving component comprises a signal receiving module. The signal receiving module is in electric signal connection with the induction transmitting module, a supporting base is installed at the bottom of the signal receiving module, the safety protection design in the signal receiving module effectively reduces pollution and damage of the external environment to key parts of the equipment, long-term stable operation of the equipment is guaranteed, and the dust removing piece arranged in the protection part can effectively remove dust in the equipment. According to the near-electricity alarm designed in the scheme, impurities accumulated on the explosion-proof glass can be regularly cleaned through cooperation with the guide sliding groove, the clear display effect is ensured, sight blocking caused by dust accumulation is reduced, the safety and reliability in the operation process are improved, and potential safety hazards can be effectively reduced in an electric power construction site.

The invention belongs to the technical field of crane equipment, and discloses a cable crane for bridge safety construction, which is technically characterized by comprising a cross beam, support plates are fixedly mounted at two ends of the cross beam respectively, a bearing block is slidably mounted on the surface of the cross beam, and a crane is fixedly mounted on the surface of the bearing block. The output end of the crane is connected with a cable, a first protection mechanism matched with the cable is arranged in the bearing block and comprises a protection ring, a first positioning assembly and a first adjusting assembly, and a second protection mechanism is arranged on the side wall of the supporting plate. The second protection mechanism comprises a damping spring, a second positioning assembly and a second adjusting assembly, and the problems that an existing cable crane is lack of necessary protection measures, the hoisted goods can drive the cable to swing towards the periphery under the inertia effect, and the stability is poor when the cable hoists the goods are solved.

The invention provides an electronic fence safety protection early warning system and method based on crane operation, and relates to the technical field of safety protection early warning. The early warning system comprises a dynamic fence generation module which is used for generating an electronic fence area according to working range parameters of crane equipment, dynamically adjusting an electronic fence boundary and generating dynamic fence data; the multi-source data fusion analysis module is used for identifying and calculating the operation risk factors according to the multi-source data and generating real-time operation risk state information; the environment self-adaptive adjustment module is used for dynamically adjusting the early warning parameters according to the external environment data and generating adjusted early warning parameters; and the comprehensive early warning output module is used for evaluating the overall risk of the crane operation according to the dynamic fence data, the real-time operation risk state information and the adjusted early warning parameters, and generating a corresponding early warning instruction according to an evaluation result. The method can comprehensively guarantee the safety of crane operation.

The invention discloses a monorail crane for coal mining, and belongs to the technical field of monorail crane equipment, the monorail crane comprises a suspension assembly, the suspension assembly comprises a clamping oil cylinder, and two side edge mounting plates are fixedly connected to the interior of the clamping oil cylinder; the opposite side walls of the two side edge mounting plates are fixedly connected with steering assemblies used for supporting and guiding, transmission assemblies used for transmission and direction guiding assemblies used for guiding the direction. When the device passes through a bent I-shaped rail, the direction guiding assemblies are used for guiding steering of the steering bevel wheels through the transmission assemblies; the steering bevel wheel is not forced to steer directly depending on the curve guide of the I-shaped rail, so that the abrasion of the steering bevel wheel is reduced, and meanwhile, the rotating force from the steering bevel wheel on the outer side of the curve can enable the direction guide assembly on the same side to approach the I-shaped rail, so that the I-shaped rail is pushed, the inclination of the clamping oil cylinder can be effectively relieved, and the stability of the clamping oil cylinder is improved. And the pressure borne by the inner side steering bevel wheel is reduced.

The invention relates to the technical field of operation control of hoisting equipment, and provides a ship loading-truck loading integrated operation method and system for mast hoisting equipment. The method comprises the following steps: adjusting an anchor cable of the mast crane to enable the mast crane to be in an initial operation state; a main arm variable-amplitude combined lifting system is started, and the mast crane is controlled to lift the heavy equipment from the cabin at the intelligently optimized lifting angle until the heavy equipment is completely separated from the cabin; the heavy equipment is controlled to hover to a shoreside transition area along with the amplitude variation action of the main arm; in the reverse amplitude variation process or after the reverse amplitude variation process is completed, according to the real-time position of the transport vehicle and the posture of the equipment, dynamic fine adjustment is conducted on the operation path, and the dynamic fine adjustment comprises adjustment of the amplitude variation angle of a main arm, the lifting height and the horizontal movement track of the equipment; and the equipment is controlled to fall to a transport vehicle plate, and the postures of the lifting points and the alignment deviation of the equipment and the vehicle plate are continuously monitored in the vehicle falling process till the equipment accurately falls in place, and vehicle loading is completed.

The utility model relates to the technical field of crane equipment, in particular to an anti-unhooking tool for a crane hook. Comprising a plurality of limiting ridges, the limiting ridges are fixedly installed on a lifting hook, the limiting ridges are of an annular structure, limiting columns extending towards the outer side of the lifting hook are installed on the limiting ridges, a lifting rope is hung in the lifting hook and placed between every two adjacent limiting ridges, and an isolation area is formed between every two limiting columns on the side portions of the adjacent limiting ridges; the limiting ridges and the limiting columns are used for limiting the lifting rope, the limiting ridges are arranged at the bottom of the lifting hook, the limiting columns are arranged on the side portion of the lifting hook, and the opening of the lifting hook cannot be shielded, so that the lifting rope with the diameter close to the size of the opening of the lifting hook can be smoothly disassembled and assembled in the lifting hook, and operation convenience is improved.

The invention discloses a one-key positioning calculation method based on hydropower station gate bridge crane equipment, which comprises the following steps of: performing initialization processing, actually acquiring real-time position information of a gate bridge crane, establishing a reference coordinate system, and calculating the position error of the gate bridge crane. Error correction is conducted on the positioning data, dynamic path planning is conducted, and the portal crane equipment executes the path through autonomous navigation. According to the one-key positioning calculation method based on the gate bridge crane equipment of the hydropower station, the error model and the dynamic path planning model based on sensor data are introduced, so that the positioning precision and the path planning efficiency of the gate bridge crane equipment are remarkably improved. Positioning deviation caused by environment changes, sensor errors and equipment movement can be dynamically corrected through data of sensors such as a GPS, a laser radar and an IMU. According to the dynamic path planning method combining obstacle avoidance and environmental adaptability, the path can be adjusted in real time, new obstacles can be avoided, and environmental changes can be coped with.

[Problem] To provide a crane device capable of generating a bird's-eye view image in a wide range at a low cost. [Solution] A crane device 12 includes a sensor group 26, wide-angle cameras 17, 18, a display 84, a rotation base 21, a boom 22, and a winch 23. The wide-angle camera 17 is attached to the lower surface of the boom 22 in a collapsed posture, and the wide-angle camera 18 is attached to the upper surface of the boom 22 in the collapsed posture. The angles of view of the wide-angle camera 17 and the wide-angle camera 18 are both 210 degrees. The wide-angle camera 17 captures an image of the front side of the crane vehicle 10 from above. The wide-angle camera 18 captures an image of the rear side of the crane vehicle 10 from above. That is, the wide-angle cameras 17, 18 capture images of the entire circumference of the crane vehicle 10 from above. Bird's-eye view image data is generated on the basis of the first captured image data generated by the wide-angle camera 17 and the second captured image data generated by the wide-angle camera 18. A bird's-eye view image represented by the bird's-eye view image data is displayed on a display 84.

The invention belongs to the technical field of monorail crane equipment, and particularly relates to an auxiliary transport robot rail gradient switching device and method.The auxiliary transport robot rail gradient switching device comprises two fixed rails arranged at different heights, and a transition rail switching mechanism is arranged between the two fixed rails; the transition rail switching mechanism is used for connecting transition rails with different gradients between two fixed rails and comprises a first connecting disc and a second connecting disc which are oppositely arranged in parallel and coaxially connected through a transmission shaft, and the multiple transition rails with different gradients are evenly arranged between the two connecting discs in the circumferential direction of the connecting discs; the lifting unit is used for driving the first connecting disc, the second connecting disc and the transition rails with the different gradients to move up and down together, and the first driving unit can drive the first connecting disc and the second connecting disc to rotate synchronously so as to change the transition rails with the different gradients. The problem that in the prior art, due to site limitation, a plurality of different slopes cannot be freely switched is solved.

The invention discloses a crane operation early warning method and system based on TOA positioning, and the method comprises the steps: S1, responding to a hoisting equipment work starting signal, and obtaining the distance information of hoisting equipment and an obstacle in real time through each UWB base station; s2, according to the distance information, collected by each UWB base station, of the obstacles and the hoisting equipment, the coordinate positions of the obstacles and the hoisting equipment are obtained in real time based on the TOA positioning technology; s3, according to the position information of the hoisting equipment and the obstacle, predicting the operation states of the hoisting equipment and the obstacle, and determining the safe distance between the hoisting equipment and the obstacle; and S4, when the actual distance between the crane equipment and the obstacle is smaller than the safety distance determined at the moment, performing early warning prompt. The anti-collision device can effectively prevent the hoisting equipment from colliding with obstacles in the operation process, reduces the accidents of collision injury of personnel on an operation site and equipment damage, and is suitable for further popularization and application.

The invention belongs to the technical field of crane equipment, and particularly relates to a safe and efficient vertical shaft elevator which comprises a door frame, and a 3t trolley is slidably connected to the door frame. The output end of the 3t trolley is connected with a connecting mechanism, and the connecting mechanism is connected with a manned lifting cage; the connecting mechanism comprises a safety box connected with the manned lifting cage, and the front end and the rear end of the safety box are each provided with two fixed pulley blocks which are arranged in a staggered mode and matched with a steel wire rope of the 3t trolley; each fixed pulley block comprises a pair of fixed pulleys which are symmetrically arranged and rotationally connected with the safety box, and a safety device for synchronously fixing the vertical steel wire rope and the steel wire rope between the pair of fixed pulleys is arranged on the safety box; according to the invention, the problem that the operation risk of the existing man-carrying cage of the vertical shaft hoist in high-altitude and low-temperature-resistant regions is high is effectively solved, and the safe operation requirement of the lifting height of 400 meters in the high-altitude regions can be met.

The present invention discloses a mine monorail crane, which relates to the technical field of monorail crane equipment and includes an I-beam rail, a carriage distributed below the I-beam rail, and a diesel main engine box. A plurality of groups of connection mechanisms for connecting the carriage and the diesel main engine box are arranged on the outer side of the I-beam rail; a braking mechanism for braking is arranged inside each group of connection mechanisms; a buffer mechanism is connected between each group of connection mechanisms; the connection mechanism drives the carriage and the diesel main engine box to move along the bottom of the I-beam rail. In case of an emergency, the braking of the braking mechanism and the buffering of the buffer mechanism are used to protect the equipment against inertia. The mine monorail crane disclosed by the present invention has the effects of multi-stage braking, high stability and safety.

The invention provides a crane hydraulic control system, and relates to the technical field of hydraulic control, and the system comprises the following steps: obtaining crane hydraulic control requirements according to crane equipment parameters of crane equipment; a crane hydraulic control assembly is determined according to the crane hydraulic control requirement, simulation processing is conducted, and a crane hydraulic control assembly simulation model is obtained; load data of the crane hydraulic control assembly are determined according to crane hydraulic control requirements and fed back to the crane hydraulic control assembly simulation model, and real-time feedback control is conducted on flow data of the crane hydraulic control assembly; when the flow data of the crane hydraulic control assembly is matched with the load data, a hydraulic control instruction is generated to control crane equipment to execute corresponding actions; and hydraulic control over the crane is effectively achieved.

The invention belongs to the technical field of hoisting equipment, and discloses steel structure hoisting equipment for building and road bridge construction, the steel structure hoisting equipment comprises a base, a support and winding mechanisms, the bottom of the support is fixedly provided with an adjusting assembly, the winding mechanisms are symmetrically installed in the adjusting assembly, and the winding mechanisms control the two winding mechanisms to move transversely. According to the hoisting device, through the cooperation effect of the steel rope fixing assembly, the rotating assembly and the hoisting base, when the steel structure is hoisted, the auxiliary steel ropes are rapidly wound around the outer side of the steel structure, and in the rotating process, the auxiliary steel ropes on the two sides wrap the top of the steel structure and are automatically wound, so that the steel structure is tightened, and the hoisting efficiency is improved. And the electric push rod pushes the positioning assembly to move downwards, the wound auxiliary steel rope is further locked, the rotating assembly is locked and fixed, rapid winding and fixing are completed, hoisting stability is maintained, a winding rope and the auxiliary steel rope do not need to be specially found, the auxiliary steel rope is fixed in the hoisting device, use at any time is achieved, and the use effect is good.

The invention relates to the technical field of mast crane equipment control, and provides a precise amplitude variation control method and system for a main arm of a mast crane. The method comprises the steps of obtaining structural parameters, and calibrating an arm angle sensor and a steel wire rope tension sensor; sensor data of an arm angle sensor and a steel wire rope tension sensor are collected and preprocessed in real time, and angle and tension feedback signals are generated; judging an adjustment strategy corresponding to the current working condition according to the angle and tension feedback signal, and generating a winch traction rate parameter corresponding to the adjustment strategy; a synchronous control instruction is sent to the two sets of variable frequency winches, the rotating angle and the hoisting state are adjusted, corresponding feedback data are obtained, closed-loop correction is conducted based on the feedback data, and control parameters are dynamically adjusted; wherein in the micro-amplitude adjustment stage, a segmented low-speed control and tension balance strategy is adopted, and high-precision positioning is ensured; and after the conditions of angle stability and stress balance are met, adjustment is ended. The method realizes control of high-precision adjustment of the angle of the main arm.

The invention relates to the field of slag crane travelling cranes, in particular to slag crane travelling crane equipment for a waste incineration power plant and a using method. The invention aims to solve the technical problems that when a bridge type slag crane is used for hoisting garbage through a mechanical grab bucket, the mechanical grab bucket shakes and swings, and the swinging mechanical grab bucket can increase the transfer time, reduce the operation efficiency, cause extra burden and abrasion to a mechanical structure of the bridge type slag crane and even cause safety accidents. Comprising a steel wire rope, a hoisting mechanism is fixedly connected to the end of the steel wire rope, a buffering mechanism is rotationally connected to the outer side of the steel wire rope, and a grab bucket mechanism is arranged on the lower side of the buffering mechanism. By arranging the buffering mechanism, two buffering balls slide in a transverse cylindrical sliding groove of a shell in a reciprocating mode to extrude and stretch buffering springs on the two sides, the two buffering balls slide in a reciprocating mode to drive two linkage bases to slide in an oval sliding groove of the shell in a reciprocating mode, and at the moment, four buffering wheels of the buffering mechanism are kept at the same height all the time.

The invention discloses a mining monorail crane, and relates to the technical field of monorail crane equipment, the mining monorail crane comprises an I-shaped steel rail, a carriage and a diesel mainframe box, the carriage and the diesel mainframe box are distributed below the I-shaped steel rail, and the outer side of the I-shaped steel rail is provided with a plurality of groups of connecting mechanisms used for connecting the carriage and the diesel mainframe box; a braking mechanism for braking is arranged in each group of connecting mechanism; a buffer mechanism is connected between each group of connecting mechanisms; the connecting mechanism drives the carriage and the diesel mainframe box to move along the bottom of the I-shaped steel rail, and under the emergency condition, inertia prevention protection is carried out on the equipment through braking of the braking mechanism and buffering of the buffering mechanism. The mining monorail crane disclosed by the invention has the effects of multi-stage braking, high stability and high safety.

The utility model relates to a multifunctional intelligent portal crane, relates to crane equipment technical field, including support subassembly, slide mechanism, hoisting mechanism and multistage telescopic link, support subassembly includes support and crossbeam, support is provided the both ends of crossbeam; the sliding mechanism comprises a hoisting frame and a driving wheel, the driving wheel is rotationally arranged on the hoisting frame, the driving wheel is connected to the cross beam in a sliding mode, and the hoisting frame is connected with a lifting hook through a hoisting mechanism; one end of the multi-stage telescopic rod is arranged on the hoisting frame, and the other end of the multi-stage telescopic rod is connected with the lifting hook. According to the utility model, through the multi-stage telescopic rod, the technical problem that a certain potential safety hazard exists as the hanging bracket is easy to rotate and shake due to inertia in the process of hoisting articles by the crane is solved.

The utility model relates to the technical field of constructional engineering, in particular to an anti-skid device for a movable formwork, which comprises a main beam, a front support leg, a rear support leg, a rear longitudinal moving auxiliary support leg, an outrigger suspension arm, a track, a rear suspension, an outer formwork, a bottom formwork, a suspension rod, a side formwork, an inner formwork, a reinforcement cage lifting appliance, a reinforcement cage tire car, a hydraulic and electric appliance, a halfpace and a handrail. According to the utility model, the upward moving beam yard is adopted to automatically finish the hole passing displacement of the supporting legs without other auxiliary crane equipment on the ground, the mechanical degree is high, the operation is simple, the safety and reliability are realized, and the rain-proof and sun-proof ceilings are arranged at the tops of the outriggers on the two sides of the main beam, so that all-day work of the moving beam yard can be ensured; when a concrete box girder is poured, steel bars of a next hole of box girder can be bound at the tail of the concrete box girder, the construction efficiency is greatly improved, the construction period is shortened, when a continuous beam or a continuous steel structure and other inter-bridge transition are carried out, only the side formwork and the bottom formwork need to be unfolded, passing can be conveniently carried out, the whole machine dismantling workload is reduced, and the transition operation efficiency is improved.

The invention belongs to the technical field of crane equipment, and particularly relates to a low-temperature-resistant crane suitable for high altitude, which comprises an elevated frame, a bridge frame is slidably connected to the elevated frame, and a crane carriage is arranged on the bridge frame; the crane carriage comprises a rack, a hoisting mechanism is arranged on the rack, and a lubricating mechanism for lubricating a steel wire rope of the hoisting mechanism is arranged on the rack; the lubricating mechanism comprises a supporting cavity detachably connected with the rack, a plurality of penetrating holes corresponding to steel wire ropes of the hoisting mechanism are formed in the supporting cavity, and a plurality of sets of conical lubricating cavities corresponding to the penetrating holes respectively are formed in the supporting cavity. The multiple sets of lubricating cavities comprise a plurality of fan-shaped lubricating cones synchronously sliding in the radial direction of the penetrating hole, and an oil way structure for providing lubricating oil for the lubricating cavities is arranged on the rack. According to the high-altitude low-temperature-resistant crane capable of conveniently lubricating the steel wire rope, the steel wire rope of the crane carriage can be conveniently lubricated.

The invention provides a ship block floating carrying method, which comprises the following steps of: launching a main ship body to berth at a wharf of a still water harbor basin, carrying out stowage leveling on a launching area, lightering a block needing to be carried to a specified position, and selecting corresponding floating crane equipment according to the weight of the block to carry out floating carrying on the block. The invention provides a brand-new feasibility scheme for whole ship building, the whole ship is built by combining equipment and facility conditions of each site and fully utilizing existing resources, the requirement of a traditional mode for site conditions is broken through, site limitation is broken through, the slipway or dock period is shortened, other site resources are not occupied, and the construction cost is reduced. And the production rhythm of other types of ships is ensured.

The utility model discloses a position adjusting device for boom and boom equipment, the position adjusting device for boom comprises a fly boom mechanism and an adjusting mechanism, the fly boom mechanism comprises a fly boom body and a fly boom driving piece, the first end of the fly boom body is rotatably arranged on the free end of the main boom body, and the second end of the fly boom body is rotatably arranged on the free end of the main boom body. The fly arm driving part is arranged on the main arm body, the telescopic end of the fly arm driving part is in driving connection with the fly arm body, the adjusting mechanism comprises an adjusting arm body, an adjusting driving part and a connecting rod assembly, the adjusting arm body is rotatably arranged at the second end of the fly arm body, and the end, away from the fly arm body, of the adjusting arm body can be used for installation of a working device; the adjusting driving part is arranged on the fly boom body, the telescopic end of the adjusting driving part is in driving connection with the adjusting arm body through the connecting rod assembly, and when operation is executed, the working device is roughly adjusted to be close to a working position point through the fly boom mechanism, then the working device is finely adjusted to the working position point through the adjusting mechanism, and therefore the position of the working device is accurately controlled.