131 results about "Container crane" patented technology

A full-unit lifting method for a quayside container crane includes calculating an overall center position of gravity of the quayside container crane full-unit; estimating a lifting height and a floating amplitude required by a main hook of a floating crane according to a water level differential at a dock and a height of the quayside container crane full-unit; selecting the floating crane and obtaining detailed parameters thereof according to basic lifting conditions of the floating crane; selecting a type of the main hook according to a weight of the quayside container crane full-unit, checking whether an interference between the boom of the floating crane and the front boom occurs, and determining an inclination angle of the floating crane during lifting; calculating a load on the lifting wire rope and selecting the lifting wire rope and a shackle; making preparations before lifting; and performing lifting at the dock.

The utility model discloses a container lifting appliance for a container ship. The container lifting appliance comprises a lifting appliance body, a guide frame and a driving mechanism, guide frames are installed on the front side, the rear side, the left end and the right end of the lifting tool body, each guide frame comprises a telescopic rod penetrating through the edge of the lifting tool body, one end of each telescopic rod is fixedly connected through a movable plate, a guide rod is fixed to the other end of each telescopic rod, and an inclined face is arranged at the lower end of each guide rod so as to make contact with a container in advance and guide the container in the descending process of the lifting tool. The driving mechanism comprises a motor fixed to the outer side of the lifting appliance body, an output shaft of the motor is connected with a lead screw, the lead screw penetrates through a threaded hole of the movable plate and is connected with a check block, and the motor drives the lead screw to rotate so as to drive the guide frame to conduct telescopic adjustment, so that the lifting appliance can be accurately in butt joint with the container in the shaking state. The lifting appliance butt joint error is reduced through the adjusting function of the guide frame, and the operation stability is improved.

The invention discloses a hoisting positioning remote control system and device for a port container crane, and relates to the technical field of cranes, the hoisting positioning remote control system comprises a remote control terminal, a network transmission unit, an equipment control unit, an offset detection unit, a monitoring and adjusting unit and a reason analysis unit. According to the invention, through sensor fusion detection and image auxiliary judgment of the offset detection unit, the accuracy of hanger position offset detection can be improved, offset detection is carried out before hoisting, during hoisting and after hoisting, and the positions, attitude data and video monitoring pictures of the hanger and the container can be checked in real time through the remote control terminal; position deviation of the lifting appliance is found in time, a remote control terminal sends an instruction to correct the deviation, the positioning precision of the lifting appliance is guaranteed, the lifting appliance can be rapidly and accurately aligned to a container, the grabbing effect on the container is guaranteed, stability is kept in the lifting process, and the situation that the container falls off due to gravity center deviation or shaking is avoided.

The invention relates to the technical field of remote control, in particular to a hoisting positioning remote control method and system for a port container crane, and the method comprises the following steps: collecting a space coordinate sequence of a lifting appliance, analyzing a vector included angle and a displacement length, generating a track curvature sequence, and generating risk points based on the comparison of curvature and space distance; the method comprises the following steps of: calculating the trajectory curvature and the spatial position of a lifting appliance, calculating the collision time advance, constructing a three-dimensional outer envelope surface based on a predicted value, calculating a stacking boundary error, performing projection calculation on a coverage proportion, and generating a lifting risk area. The lifting appliance movement is monitored in real time and potential risk points are identified by accurately calculating the trajectory curvature and the spatial position of the lifting appliance; the collision time is predicted by combining the ratio of the tangential speed to the spatial distance, the risk prediction precision is improved, three-dimensional pose analysis and error control enable the spatial error distribution of the lifting appliance to be finely managed, a risk area is calibrated in time, operation interruption is avoided, and the precision, safety and remote control capability of lifting operation are integrally improved.

The invention provides a container truck anti-hoisting method and system based on multi-line scanning, relates to the technical field of container cranes, and aims to avoid additional purchase of special equipment, reduce the number of hardware, simplify the system structure, reduce the debugging process and improve the production efficiency by utilizing an existing cart anti-collision laser scanner and an existing container truck guide laser scanner of a crane. The arrangement positions of existing cart anti-collision laser scanners and container truck guiding laser scanners are verified in use, the functions of the existing scanners are reasonably utilized by means of the existing scanners, interference risks cannot be additionally increased, and normal operation of anti-collision equipment, guiding equipment and the like of the crane is guaranteed; a fusion three-dimensional model is constructed by acquiring various information, and the states of the container truck, the lifting appliance and the surrounding environment can be comprehensively and accurately reflected; and when the container truck abnormally displaces and the speed of the lifting appliance exceeds the limit, an interlocking signal is triggered to stop, a reliable early warning mechanism is provided for preventing the container truck from being lifted, and the loading and unloading operation safety is effectively guaranteed.

A lubricating device for a pitching steel wire rope of a quayside container crane belongs to the technical field of steel wire rope lubrication and comprises a main body support, a lubricating sleeve capable of penetrating through a steel wire rope is arranged on the top side of the main body support, and an oil injection hole is formed in the lubricating sleeve; walking mechanisms arranged on the two sides of the lubricating sleeve are arranged at the two ends of the main body support correspondingly and can walk along the steel wire rope so as to drive the main body support to walk on the steel wire rope; an oil supply mechanism is arranged on the bottom side of the body support and connected with an oil conveying pipe, the oil conveying pipe is connected with an oil injection hole in the lubricating sleeve, and the oil supply mechanism can convey lubricating grease into an inner cavity of the lubricating sleeve through the oil conveying pipe and the oil injection hole. The lubricating device for the pitching steel wire rope of the quayside container crane is reasonable in design, simple in structure, convenient to use, good in lubricating effect, safe, reliable, capable of effectively improving working efficiency and reducing environmental pollution and suitable for popularization.

The invention discloses an electric energy feedback collection and load peak suppression system for a wharf crane, and relates to the technical field of wharf power supply and distribution and energy management. Wherein the wharf crane comprises a quayside container crane (quay crane), a rail or rubber-tyred container portal crane (gantry crane) and the like, which are called cranes for short hereinafter. According to the system, instantaneous power, average power, peak duration and power increasing rate of a wharf power station, feedback power and feedback electric energy of a crane, capacity and charging and discharging parameters of an energy storage device, and electric energy quality indexes of a power grid are collected in real time; respectively calculating a peak impact index, a feedback absorption coefficient, a peak valley switching coefficient and a harmonic suppression coefficient, and comparing and analyzing with a preset threshold to generate a corresponding strategy; and integrating the results of the modules, carrying out unified scheduling on the energy storage device, and realizing power fluctuation compensation and stable output through a smooth scheduling strategy, thereby constructing an operation mechanism. According to the method, the instantaneous peak power of the wharf power station can be effectively inhibited, the feedback energy consumption capability is improved, the peak-valley scheduling economy is optimized, the electric energy quality is improved, and the safety, stability and energy efficiency of system operation are improved.

The embodiment of the invention provides a hybrid power system of a quayside container crane and a control method, and relates to the technical field of hybrid power of quayside container cranes. The problems that due to the large power requirement of the quayside container crane, the power cannot be adapted when the hybrid power technology is applied, and the battery parallel connection risk is large are solved. The system comprises a DC bus, a bidirectional rectifier, a plurality of frequency converters, a plurality of charging and discharging branches and a control system. The plurality of charging and discharging branches are physically isolated and connected in parallel to the direct current bus, each charging and discharging branch comprises a battery pack and a bidirectional direct current converter, and the control system is used for calculating the distribution power of the single charging and discharging branch according to the real-time quay crane power requirement and the number of the online charging and discharging branches. The hybrid power control method for the quayside container crane is used for controlling the system, the distribution power of a single charging and discharging branch is accurately calculated through the real-time quayside crane power requirement and the number of online charging and discharging branches, and balanced charging and discharging between battery packs are achieved.

The present invention relates to the technical field of lithium battery replacement devices for container cranes, and discloses a lithium battery replacement device, including a lifting crane and a battery loading mechanism, wherein the battery loading mechanism is arranged on one side of the lifting crane, and one end of the lifting crane is fixedly connected to a suction lifting mechanism, and a linkage control mechanism is arranged on the lower side of the suction lifting mechanism, and a battery main body mechanism is fixedly connected to the lower side of the linkage control mechanism, and the battery main body mechanism is arranged inside the battery loading mechanism. In the present invention, the battery main body mechanism and the battery loading mechanism cooperate with each other, thereby alleviating the cumbersome disassembly and assembly operations and the inconvenience of replacement. Existing battery loading mechanisms mostly rely on bolts or simple clips for fixing, and the bolts are easy to loosen and the clips are easy to fail. Moreover, the suction lifting mechanism and the linkage control mechanism cooperate with each other, thereby improving the problems of time-consuming operation and high skill requirements for personnel when replacing lithium batteries, and difficulty in achieving rapid replacement.

The invention discloses a double-trolley shoreside bridge type container crane operation system, which is characterized in that two trolleys are arranged on a main beam of a crane, and the two trolleys respectively carry out container ship unloading and loading operation in different areas on a container ship in tandem in a step-by-step manner; and the two trolleys respectively implement ship loading and unloading operation inside and outside the gauge of the crane without mutual interference, and compared with a ship loading and unloading mode of a traditional main beam single trolley crane container, the ship loading and unloading operation efficiency of a container wharf is remarkably improved. According to the single-trolley crane, the two trolleys are arranged on the same main beam and the same track in tandem, the structure of an existing single-trolley crane can be directly transformed, new main beam and other structures do not need to be configured for newly-added trolleys, the single-trolley crane has the advantages of being simple in transformed structure and low in transformed cost, the loading and unloading efficiency is greatly improved, and meanwhile the loading and unloading cost is reduced. And the investment cost of the shoreside bridge crane is greatly reduced.

The utility model relates to a quayside container crane driver with a heat dissipation device, and belongs to the technical field of drivers. The crane driver comprises an electric control cabinet, a power supply control board, a driving control board and a power-off protector, the power supply control board and the driving control board are arranged on one side in the electric control cabinet, the two control boards are arranged in parallel, and a heat dissipation device is further arranged in the electric control cabinet. The heat dissipation device comprises a first mounting plate, a second mounting plate, a fixing plate and a heat dissipation fan, the fixing plate is connected with the first mounting plate and the second mounting plate, the heat dissipation fan is arranged on the fixing plate, the fixing plate is provided with a fixing through hole which penetrates through the end faces of the two sides and is used for mounting the heat dissipation fan, and an output port of the heat dissipation fan corresponds to the control panel. Through the heat dissipation device, heat accumulation in the electric control cabinet is relieved, and the probability that the two control panels are overheated and burnt is reduced.

This invention relates to the field of remote crane control technology, specifically a crane control device, comprising a cabinet, a support carrier, and a guardrail. The cabinet is mounted on the support carrier; the guardrail is also mounted on the support carrier; the support carrier is the crane's frame or trolley; a control mechanism is installed inside the cabinet, which receives control commands remotely sent from the control room; the control mechanism integrates the crane's electric hoist control unit, trolley control unit, and crane trolley control unit; it also includes: a detection mechanism installed inside the cabinet; and a protective mechanism installed inside the cabinet, used to detect if the cabinet becomes loose. This invention achieves remote control of port container cranes by controlling the movement of the trolley and crane units within the crane, as well as the movement of transported containers, through the control mechanism; and it eliminates the need for personnel to frequently climb the crane to maintain the cabinet, greatly improving the convenience of inspections.

This utility model discloses a container loading and unloading bridge weight sensor junction box, enabling wiring between the weight sensor and the electrical control box. The box includes a housing; a main control board with an intelligent main control module is installed inside the housing; a temperature sensor and a humidity sensor, controlled by the main control module, collect temperature and humidity data within the housing; and a wireless communication module controlled by the main control module. An external terminal with a display is installed outside the housing, communicating wirelessly with the main control module and receiving temperature and humidity data from the main control module, which is then displayed on the screen. In this utility model, because the temperature sensor and humidity sensor are installed inside the junction box to detect the internal temperature and humidity, and the external terminal with a display shows the internal temperature and humidity, the internal conditions of the housing can be understood without opening the box.

The embodiment of the invention provides a quayside container crane transfer platform, an impact resistance verification method thereof and a readable storage medium, and relates to quayside container crane transfer platforms. The problem that a quay crane transfer platform based on static elastic design is insufficient in high-energy instantaneous impact resistance and light weight can be solved. According to the verification method, the platform structure enters a controllable plastic deformation stage through finite element calculation. When the total strain energy T is larger than or equal to the impact potential energy E, it is indicated that the structure converts impact kinetic energy into internal energy of materials through deformation modes such as reinforcing rib buckling and panel plastic upheaval, and effective dissipation of the energy is completed. And when the maximum strain value epsilon is smaller than or equal to the limit strain epsilon max of the material, it is ensured that the plastic deformation of the bearing component is always within the ductility capacity range of the material. Impact energy is actively dissipated through structural deformation, and the platform can be lighter and the cost can be reduced in combination with a manufacturing process.

A container handling system, comprising a container crane configured to move a container between a container yard and a loading / unloading zone, the loading / unloading zone is configured to receive a transport vehicle for transporting the container. The loading / unloading zone further comprises a protective structure configured to cover a predetermined section of the loading / unloading zone.

The application provides a sling working condition detection method, a container crane and a port automation system. The method comprises the following steps: transforming a radar coordinate system into a target coordinate system, and calibrating the position of a sling center in the target coordinate system; obtaining radar information and calculating the edge position information of the sling in the current working condition according to the position of the sling center; calculating the relative position between the edge position of the sling and the to-be-lifted article according to the radar information and the edge position information, and judging whether the sling is in a safe working condition. The radar information obtained by the radar can be converted into a target coordinate system which is constructed according to the sling working environment, and the position information of the vehicle, the to-be-lifted article and the sling is identified. Whether the sling is in a safe working condition is judged by determining the relative position between the sling edge and the to-be-lifted article, so that the safety of the sling work is improved.

The invention discloses an active anti-swing and all-directional lifting appliance micro-motion system, relates to the technical field of cranes, solves the problems of efficiency loss and safety risk caused by lifting appliance swing of a traditional container crane, repeated correction cost of alignment deviation, adaptive fault of precision speed and automation requirements and the like, and comprises a crane carriage and a special lifting appliance, the hoisting trolley is connected with the winding system, the winding system comprises a plurality of steel wire ropes, the special lifting appliance comprises a lifting appliance upper frame and a plurality of steel wire rope fixing devices, the steel wire ropes are connected to the corresponding steel wire rope fixing devices, and corresponding moving devices are connected between the steel wire rope fixing devices and the lifting appliance upper frame. And the moving device drives the steel rope fixing device and the lifting appliance upper frame to move relatively. Through a winding system and a plurality of moving devices, a combined system of active anti-swing and omni-directional lifting appliance micro-motion is completed, and the dual effects of swing suppression and fine alignment are achieved.

The invention provides a method for preventing a container from being scratched and a yard crane. According to the lifting appliance, under the working condition that the lifting appliance moves up and down when box grabbing and releasing operation is executed, the relative distance between the corner point pixel coordinates of the standard box at the target position and the edge of the adjacent box and the edge of the top face of the lock hole in different preset directions is calculated, and an alarm can be given under the condition that the relative distance is smaller than a threshold value; the function of preventing the container from being scratched when the lifting appliance moves up and down due to container grabbing and releasing is achieved, and then the technical effect that when the lifting appliance moves up and down during container grabbing and releasing operation, anti-collision early warning is conducted on the container, and therefore the working efficiency is improved is achieved. In this way, the technical problem that when the lifting appliance moves up and down during container grabbing and releasing operation, anti-collision early warning is difficult to conduct on the container is solved.

The application discloses a container front crane driving speed limit comprehensive control method and a crane. On the basis of cooperating with the speed limit control of an engine and a gearbox, a plurality of multi-dimensional reference signals for auxiliary speed limit control, such as a sling load, a large arm position, a hoisting box weight and the like, are provided by a sling controller, a large arm length angle sensor and a pressure sensor. Through the participation of the above-mentioned multi-element auxiliary signals, auxiliary speed limit can be carried out by detecting the load condition and the sling position, the safe height and the safe extension of the sling movement are indicated, and through the intuitive guidance prompt information, the driver can timely execute the correction operation, the visual obstruction or the large arm action overrun is avoided, and therefore the safety of the container crane driving and operation is improved. Further, in combination with the signal for detecting the container weight provided by the application, different levels of speed limit values can be set as required, the fine speed limit function is realized, the safety is ensured, and the crane operation efficiency can be improved.

The invention provides a quayside container crane with a container safety inspection system, and relates to the technical field of container inspection, the quayside container crane comprises: a gantry structure provided with a cross beam; the main beam is arranged on the portal structure; the moving device is arranged on the main beam and is provided with a driving device; the hoisting device is arranged below the moving device; the container safety inspection system is arranged on the cross beam; the hoisting device ascends after grabbing the container and moves along with the moving device; when the container moves to the position above the cross beam, the container descends, the container stays at the detection position, and the container safety inspection system detects the container; and the hoisting device continues to descend until the container is placed on the container carrying tool. According to the technical scheme, through mutual cooperation of the moving device, the driving device and the hoisting device, the container is continuously transferred, the container is detected in the transferring process, actions in the whole process are coherent, time is saved, and the working efficiency of a port is improved.

The application discloses a remote control type container crane and belongs to the technical field of hoisting devices. The container crane comprises a beam frame, a trolley mechanism sliding on the beam frame and a lifting plate hoisted by a sling. The sling is located at the two sides of the trolley mechanism, and the end of the sling away from the trolley mechanism is connected with a lifting appliance. The meshing of the rack and the spur gear can drive the rotating shaft to rotate, thereby the meshing of the driving bevel gear and the driven bevel gear can drive the adjusting rod to rotate, which is beneficial to adjusting the position of the adjusting rod relative to the connecting cylinder, so that the lifting appliances on the two sides can be simultaneously sleeved outside the lifting rod. When the lifting appliance is sleeved outside the lifting rod, the guide block is located at the flared portion, so that the sling can drive the one end of the steering rod to be upwardly raised during the winding process of the sling, which is beneficial to the sling to carry the adjusting assembly to the vertical direction and hoist the container, thereby avoiding the inclination of the container when the container is hoisted.

The utility model discloses an anti-collision protection structure of a quayside container crane girder, which comprises two girders, a protection device is arranged at the bottom of each girder, the protection device comprises a buffer rubber pad, a spring, an anti-collision plate, an air bag and an insertion block, the top of the buffer rubber pad covers the bottom of each girder, and the top of the spring covers the anti-collision plate. An anti-collision plate is arranged below the buffering rubber pad, and the outer wall of the anti-collision plate is fixedly connected to the inner wall of the main beam. The utility model relates to the technical field of anti-collision protection of a quayside container crane girder, through the matching among a rubber buffer pad, a spring and an air bag, when the bottom of the girder is collided by a container, most of the borne impact force is firstly released by the air bag, and if the collision force is too large, the air bag is damaged. The air bag can be replaced by means of the inserting connection relation between the inserting blocks on the two sides of the air bag and the main beam, and then the anti-collision plate, the springs and the rubber buffering cushion are matched.

The application discloses a container crane control system and method based on situation awareness, relates to the crane control technical field, collects standard data of the crane, establishes a historical database about the characteristics of the crane after preprocessing and normalization, searches the historical database, selects the crane for executing the task by screening the same kind of goods tasks, analyzes the historical data, splits the task links, analyzes the task link completion degree, judges the link execution state, analyzes the characteristic deviation condition, thereby analyzes the influence degree of the characteristic on the link according to the characteristic deviation condition, comprehensively considers the task completion degree, thereby obtains the correlation coefficient of the link execution state on the task completion condition, analyzes the adaptation degree of the crane to the task, obtains the preselected crane, comprehensively considers the residual working time length of the preselected crane, selects the crane to receive the hoisting task, and the application controls the real condition of the container crane through the situation awareness, formulates the preventive measures, and enhances the overall operation stability.

The application discloses a large container crane intelligent early warning system based on personnel behavior analysis, comprising the following steps: collecting the behavior of operating personnel, the running state of equipment and environmental parameters in real time through a multi-modal sensor network, constructing a dynamic data set, extracting behavior characteristics using a time difference embedding algorithm, generating a multi-level space-time feature matrix in combination with dynamic scene influence factors, dynamically calculating regional risk factors using a Bayesian inference model, and generating a comprehensive risk value through an adaptive multi-objective optimization algorithm, dividing the risk level into three categories of low, medium and high, triggering a graded early warning response according to the risk level, and generating optimized behavior adjustment suggestions in combination with a quantum probability behavior prediction algorithm, dynamically optimizing feature extraction rules and risk assessment logic through a progressive learning algorithm, and forming a closed-loop optimization process. The application realizes intelligent analysis and real-time early warning of personnel behavior, and improves the safety and adaptability in the crane operating environment.

The invention relates to the technical field of quayside container crane structures, in particular to a quayside container crane derailing prevention device which comprises a rail and a wheel set moving on the rail, two grooves are oppositely formed in the rail, a plurality of derailing prevention columns are arranged in each groove, and side plates are arranged on the two sides of each wheel set. According to the invention, the derailment phenomenon of the traditional wheel set during advancing on the track is effectively solved, the wheel set and the track are always kept in a connection state conveniently, and the wheel set is allowed to advance on the track, so that the phenomena of jack toppling, door leg buckling and the like caused by derailment are effectively avoided; by means of the mode that the multiple clamping sets circularly move on the side plates when moving along with the wheel sets, part of the multiple clamping sets are always used in cooperation with part of the anti-disengaging columns on the grooves, so that the effect that the wheel sets are always kept in the connection state with the track when moving on the track is achieved, and alternate and cyclic use of the multiple clamping sets is achieved.

The utility model relates to an electric double-body barge which comprises a barge body. The middle parts of the sheet bodies are connected into a whole through a connecting bridge, and each sheet body comprises a deckhouse and a container type power supply; the bridge type container crane is composed of a bridge and a container hoisting mechanism; the bridge frame comprises a metal box type supporting structure and a track; the shore power connection equipment comprises a rotating base mounted on the sheet body, an electric capstan wound with a cable is mounted on the rotating base, the shore power connection equipment further comprises a telescopic arm, one end of the telescopic arm is mounted on the rotating base, and a cable conveying device for releasing the cable is mounted at the other end of the telescopic arm; the electric catamaran barge adopts a catamaran type layout, has a larger deck operation space, can store more container type power supplies, has better stability, is beneficial to carrying out hoisting operation under complex sea conditions, meets the multi-scene power supply requirements, and also meets the green and environment-friendly requirements.

The utility model provides a container crane shipping temporary navigation light power-loss protection early warning device and a quay crane, the power-loss protection early warning device is powered by a transport ship power supply, and the power-loss protection early warning device comprises an uninterruptible power supply, a navigation light system, a network controller and an audible and visual alarm, the network controller is electrically connected to the two ends of the transport ship power supply, the uninterruptible power supply and the network controller are arranged in parallel, and a first control interface of the network controller is electrically connected with an electric output port of the uninterruptible power supply; the navigation light system comprises a main navigation light which is electrically connected with an electric output port of the uninterruptible power supply; and the audible and visual alarm is electrically connected with the second control interface of the network controller. According to the power-loss protection early warning device, the navigation lamp and the quay crane can timely give an early warning after power loss, and can continuously work for a period of time to provide sufficient inspection and maintenance time for maintenance personnel, so that collision accidents caused by the fact that the navigation lamp is not turned on during the period are avoided.

The utility model relates to a bulk cargo grab bucket lifting opening and closing mechanism for a quayside container crane, which belongs to the field of quayside container cranes and comprises a lifting appliance upper frame, a bulk cargo grab bucket lifting opening and closing structure, a steel wire rope chain and a four-rope bulk cargo grab bucket. The bulk cargo grab bucket lifting opening and closing mechanism is connected to the lower portion of the lifting tool upper frame, and the steel wire rope lock chain is connected between the bulk cargo grab bucket lifting opening and closing mechanism and the four-rope bulk cargo grab bucket. The bulk cargo grab bucket lifting opening and closing structure comprises a main body steel structure fixedly connected to the bottom of the lifting tool upper frame, a motor fixedly connected to the top of the main body steel structure and a coupler fixedly connected to an output shaft of the motor. According to the bulk cargo grab bucket lifting opening and closing mechanism for the quayside container crane, only one connector needs to be made for butt joint in a program, the technical improvement cost is greatly reduced, and a user only needs to purchase the bulk cargo grab bucket lifting opening and closing mechanism, so that function upgrading of multi-species operation can be achieved.

The invention provides a trolley running device and method suitable for a nuclear power station spent fuel container crane, and relates to the field of trolley running of cranes, the trolley running device comprises a weight transporter and an electric-hydraulic pusher, the top surface of the weight transporter is fixed on a hoisting mechanism chassis through a connecting mechanism, the bottom surface of the weight transporter is mounted on a rail, and the electric-hydraulic pusher is mounted on the rail. And the electric-hydraulic pusher is fixed on the chassis side surface of the hoisting mechanism chassis, which is vertical to the running direction of the trolley, through a connecting mechanism. The connecting mechanism comprises a bolt. The ultra-low speed of 0.7 m / min can be met. The height of the weight transporter is 170mm, and the diameter of the wheel is larger than or equal to 500mm. Each small roller of the heavy object transporter is stressed in a 400mm stroke, and the whole stress of the mechanism is balanced. The device has the advantages that the whole stress is balanced, the height of the heavy object transporter is small (170mm), and the diameter of a wheel is larger than or equal to 500mm; the height of the whole machine is reduced by using the weight transporter, the gravity center is low, and the operation is more stable.