86results about "Vertical ship-lifting" patented technology

The invention provides a gear and rack climbing type ship lift adopting a balance winding drum for safe fortification and an operation method of the gear and rack climbing type ship lift, relates to the field of ship lifts, and aims to solve the problems of main engine arrangement and water leakage safety fortification of a high-water-head large-tonnage ship lift. The ship lift comprises a self-bearing ship chamber structure, gear and rack driving mechanisms distributed on side wing platforms, a balance winding drum device at the top of a tower column, a balance weight system and a butt joint locking / jacking device. The ship chamber driving mechanism is driven to ascend and descend through meshing of a gear and a rack, the balance winding drum device is connected with the ship chamber and the balance weight system through a steel wire rope, weight balance is achieved, and locking is achieved through an accident brake during water leakage. The butt joint device resists loads through frictional contact and mechanical self-locking. According to the invention, the manufacturing and mounting problems of the super-large winding drum are avoided, space conflicts are solved, a three-level protection mechanism is constructed, the braking response time is less than or equal to 0.5 second, the locking reliability is 100%, and the device is suitable for navigation of ships with 200m-level water heads and 5000 tons.

The application belongs to the technical field of ship traction, and particularly discloses a system and method for traction of a ship by a ship lift. The system comprises electric push wheels, a ship lift module, upstream and downstream navigation walls, an electric push wheel and ship fast connection device, and a remote centralized control system. The electric push wheels are provided with two push wheels and a propulsion system integrated on the push wheels. The ship lift module is provided with a first guide device and a braking system. The upstream and downstream navigation walls are provided with a second guide device and a lifting system. The electric push wheel and ship fast connection device comprises a matching connection male head and a connection female head. The application can greatly improve the operation safety and efficiency of the ship lift. Through the traction of the electric push wheels, the ship can reduce exhaust and noise pollution when passing through the ship lift, and can save the operation cost of the ship owner. The traction system is simple to operate and maintain, and the navigation operation guarantee rate of the ship lift is improved.

The present invention discloses a double-channel ship lift arranged perpendicular to a waterway and a navigation method thereof, comprising a ship lift arranged on the downstream side of a dam, wherein an upstream entry pilot channel and an upstream exit pilot channel are respectively provided between the upper part of the ship lift and the water area upstream of the dam, and a downstream entry pilot channel and a downstream exit pilot channel are respectively provided between the lower part of the ship lift and the water area downstream of the dam; the present invention can greatly reduce the waiting time between ships entering and leaving the carriage, thereby significantly improving the navigation efficiency of the ship lift.

The utility model relates to the technical field of ship lifts, in particular to a ship lift navigation channel which comprises a navigation channel body, and the navigation channel body is integrally in a U shape with an opening in the upper end. The swing mechanism comprises a lifting plate arranged on the inner wall of the channel body, a swing plate is hinged to the lifting plate, a pushing assembly is further arranged on the lifting plate, the output end of the pushing assembly makes contact with the swing plate, and a reset spring is arranged between the lifting plate and the swing plate; through the arrangement of the swing mechanism for generating water waves, when the ship reception chamber deflects, the water waves generated by the deflection side restrain the inclination trend of the ship reception chamber, and then the possibility that the ship reception chamber collides with the channel body is reduced; meanwhile, when the ship reception chamber enters water, water flow is pushed to the middle under the action of water waves on the two sides, and the probability that the ship reception chamber gets close to the side and finally collides with the channel body is reduced.

A motor vehicle hub station configured to function as a terminal for an air motor vehicle, a ground motor vehicle, or a water motor vehicle, the motor vehicle hub station including a plurality of levels by a combination of a water surface level connected to a water surface and having an entrance for a water motor vehicle, a port level having a takeoff and landing field for an air motor vehicle, or a ground level configured to be connected to a ground and having an entrance for a ground motor vehicle, wherein a lift passage having an internal space extending in an up-down direction of the motor vehicle hub station is provided between the levels, the internal space is connected to each of the water surface level, the port level, and the ground level, and the air motor vehicle, the ground motor vehicle, or the water motor vehicle is lifted or lowered through the internal space.

The invention discloses a transverse centering device and method for a ship chamber of a large ship lift, and relates to the technical field of large ship lifts.The transverse centering device comprises two sets of guide oil cylinder systems, two sets of mechanical guide mechanisms, a compensation oil cylinder system and a hydraulic control system; the two guide oil cylinder systems are symmetrically arranged on the two sides of the bottom of the ship chamber. The two sets of mechanical guide mechanisms are symmetrically arranged on the two sides of the ship chamber, each mechanical guide mechanism comprises a fixed part and a movable part, the fixed parts are installed on buildings on the corresponding sides, the movable parts are fixedly arranged on guide oil cylinder systems at the bottoms of the corresponding sides of the ship chamber, and the movable parts ascend and descend along with the ship chamber. One side, far away from the ship chamber, of the movable part is locally sleeved on the fixed part in a sliding manner; the hydraulic control system and the compensation oil cylinder system are used for controlling the two guide oil cylinder systems to achieve stability in the transverse centering and lifting process of the ship chamber. Through cooperation of a mechanical structure and a hydraulic system, transverse centering of the ship chamber is achieved, and the operation efficiency and the operation safety can be effectively guaranteed.

An anti-collision device with a hydraulic cylinder buffering function belongs to the field of hydraulic metal structures and comprises an anti-collision beam, rail supports are arranged at the two ends of the anti-collision beam and matched with rail grooves, and a buffering jack is arranged on the back of the anti-collision beam and connected with a jack back support. The device is simple in structure and convenient to operate and use, impact energy is absorbed to a great extent, and safety is improved.

The present invention provides a safe braking method for a ship lift with a braking force curve adjustable with external load, and the braking process is divided into five stages: the first stage: after the main hoist turns from normal speed to a preset overspeed limit, the braking system issues a brake-on command, and the main hoist speed continues to increase to the brake-on speed, at which time the braking force of the brake is 0; the second stage: after the brake is actually applied, the main hoist force increases from zero to the first-level braking force; the third stage: the main hoist force is maintained at the adjusted braking force to complete the braking of the main hoist, at which time the main hoist speed is reduced to 0 in the middle process, and the main hoist stops; the fourth stage: after the main hoist speed reaches 0 and stops, the braking force quickly increases to 100% braking force; the fifth stage: the brake maintains a full-pressure brake-on state. The present invention can realize precise control of braking acceleration and speed synchronization during the braking process, and complete precise and synchronous braking of the ship lift under different working loads at one time.

This invention discloses a hydraulic system and control method for a ship lift sealing frame, relating to the field of hydraulic system technology. The hydraulic system for the ship lift sealing frame includes: multiple active cylinders and multiple passive cylinders; a power supply assembly for drawing hydraulic oil from an oil tank; a throttling and reversing module, whose inlet end is connected to the outlet end of the power supply assembly, for regulating the flow direction of hydraulic oil into the active and passive cylinders; the throttling and reversing module is connected to the rodless chamber of the active cylinders through a first active oil circuit, which is connected to the first passive oil circuit through a sequence valve. In using the hydraulic system for the ship lift sealing frame provided in this application, during the extension of the sealing frame, only the synchronicity of the active cylinders needs to be ensured, reducing the number of cylinders requiring synchronicity, lowering the control difficulty of maintaining synchronicity, thereby reducing the cost of achieving synchronicity requirements and improving the synchronicity of the ship lift sealing frame hydraulic system.

The invention provides a dynamic adjusting method for a ship chamber of a launching type ship lift after entering water. The dynamic adjusting method comprises the following steps that the downstream water level (WD), the water depth (WX) of the ship chamber and the water entering depth (WR) are detected in real time through a sensor; adjusting is triggered based on predefined parameters (the standard water depth WXB of the ship chamber, the allowable fluctuation range WX delta M of the water depth, the maximum draft WCM of the ship and the maximum water entry depth WRM of the ship chamber); if WRM (descending condition) or WR is smaller than WRM-delta 2 (lifting condition), delta 1 and delta 2 take the design water depth + / -5%-10%; when descending is triggered, the main elevator runs to WX = WXB + WXdeltaM, and lifting is triggered in a similar way; the levelness (height difference is less than 1cm) of four corners of the ship chamber is monitored during adjustment; and after adjustment, if the WX is within the range of [WXB-WX delta M, WXB + WX delta M], the door is closed, otherwise, adjustment is repeated. According to the method, the ship chamber water depth is kept within an effective range through dynamic adjustment, and ship draft and ship lift operation safety are guaranteed.

The invention discloses a ship lift overspeed protection device and method based on a nut stud safety mechanism, and belongs to the technical field of ship lift protection equipment. The ship lift overspeed protection device comprises a ship chamber, a driving structure, a transmission mechanism, a compression mechanism, a stretching mechanism and a hydraulic damping mechanism; the driving mechanism drives the short screw rod to idle in the long nut column through the transmission mechanism when the ship chamber operates normally; an overspeed clutch is arranged on the transmission mechanism; the compression mechanism is connected with the short screw rod and is matched with the hydraulic damping mechanism to prevent the ship chamber from moving downwards; the stretching mechanism is connected with the ship chamber and matched with the hydraulic damping mechanism to prevent the ship chamber from moving upwards. According to the ship lift overspeed protection device and method based on the nut column safety mechanism, the problems that in the prior art, a braking system depends on an electrical control system, and safety accidents such as ship chamber top rushing or falling easily occur during electrical failure can be effectively solved.

The invention discloses a rack replacement method of a large gear rack climbing type ship lift, which comprises a middle rack replacement method, and the middle rack replacement method comprises the following steps: primarily ejecting a middle rack to be replaced by four ejector rods; a rack lifting appliance is connected to the middle rack to be replaced, and the bridge crane is connected with the rack lifting appliance through a steel wire rope; the middle rack to be replaced is completely ejected out from the position between the upper rack section and the lower rack section which are adjacent; operating the bridge crane to move out the middle rack to be replaced and move in a new middle rack; a new middle rack is preliminarily pushed in; and after the rack lifting appliance is dismounted, the new middle rack is completely pushed between the upper and lower adjacent rack sections. The rack replacement device is simple in structure, convenient to replace and high in universality, a rack of a gear and rack driving system on the large gear and rack climbing type ship lift can be safely and stably replaced, rack maintenance work of the large gear and rack climbing type ship lift is guaranteed, and therefore it is guaranteed that the ship lift safely runs for a long time.

The utility model discloses a signal detection device for an anti-collision plunger latch oil cylinder of a ship lift chamber. The signal detection device comprises a mounting bracket, a fixed part, a guide part, a gas spring, a sliding block and a detection part, the fixing part and the guide part are respectively arranged on the mounting bracket, the fixing part is used for fixing the gas spring, the sliding block is arranged on a telescopic rod of the gas spring, the detection parts are respectively arranged on two sides of the sliding block, and a trigger piece is arranged on the sliding block; the detection part is used for detecting the upper limit position and the lower limit position of the sliding block at a preset position, and the guide part is used for guiding the sliding block; a telescopic rod of the gas spring abuts against a piston rod of the plunger latch oil cylinder. According to the scheme, the problems that a built-in stroke sensor cannot be installed on the plunger latch oil cylinder and the piston rod is arranged in equipment and cannot be detected to be in place through a conventional method are solved, the reliability of connection or separation of the truss and the steel wire rope can be ensured by accurately detecting the in-place action condition of the plunger latch oil cylinder, and safe operation of ship lift equipment is ensured.

The invention discloses a screw-out device and method for a short screw of a gear rack climbing type ship lift, and the screw-out device comprises an upper guide assembly, a tower top bridge crane, a lower guide assembly, a lower slewing bearing, a module driving assembly, a distance measuring assembly and a gap monitoring assembly, the upper guide assembly comprises an upper guide frame, a lifting lug connected with the lifting end of a tower top bridge crane is arranged on the upper guide frame, the lower guide assembly comprises a lower guide frame, the upper guide frame and the lower guide frame are connected to the short screw through an upper slewing bearing and a lower slewing bearing respectively, and the lower slewing bearing is provided with outer teeth. The module driving assembly comprises a gear engaged with the outer teeth and a joint module used for driving the gear to rotate. According to the device, in the process that the tower top bridge crane lifts the short screw, the joint module can drive the short screw to rotate, and the short screw can be safely screwed out through the distance measuring assembly, the gap monitoring assembly and the electric control system, so that the short screw can be independently overhauled and maintained.

A ship lift safety mechanism gap adjustment method and a ship lift safety mechanism turning method, first require to disconnect the connection between the ship compartment attitude driving point reducer and the synchronous shaft which needs to be adjusted, and then reinstall the synchronous shaft after adjusting the ship compartment to the horizontal state. Then, the adjustment direction is determined by measuring the gap value of the upper and lower ends of the safety mechanism screw pair. Subsequently, the driving universal coupling of the safety mechanism is removed, and the specially designed ship lift safety mechanism gap adjustment device is connected and fixed with the upper rotary support disc of the safety mechanism. By manually rotating the device, the upper and lower gap values of the safety mechanism screw pair can be selectively increased or decreased until the preset standard is met. Finally, after confirming that the gap adjustment meets the standard, the driving universal coupling of the safety mechanism is reassembled to restore the normal operation of the ship lift. The present application not only improves the safety and reliability of the ship lift, but also simplifies the maintenance process and reduces the operation difficulty.

The application discloses a ship lock of ship lift anti-collision locking latch oil cylinder signal detection device and method, which comprises a mounting bracket, a fixing part, a guide part, a gas spring, a sliding block and a detection part. The fixing part and the guide part are arranged on the mounting bracket respectively. The fixing part is used for fixing the gas spring. The sliding block is arranged on the telescopic rod of the gas spring. The detection part is arranged on both sides of the sliding block and a trigger is arranged on the sliding block. The detection part detects the upper and lower limit positions of the sliding block at the predetermined position. The guide part is used for guiding the sliding block. The telescopic rod of the gas spring is in contact with the piston rod of the locking latch oil cylinder. The scheme solves the problems that the locking latch oil cylinder cannot be installed with a built-in stroke sensor and the piston rod arranged in the equipment cannot be detected through a conventional method. The action of the locking latch oil cylinder to the position can be accurately detected to ensure the reliability of the truss and the steel wire rope connection or separation, and the safe operation of the ship lift equipment is ensured.

The utility model discloses a ship lift butt joint C-shaped water seal preassembling tool, and relates to the technical field of water conservancy projects, the ship lift butt joint C-shaped water seal preassembling tool comprises a water seal body and a plurality of synchronous jacking trolleys, and the top of each synchronous jacking trolley is fixedly provided with an inner angle aluminum and an outer angle aluminum which are parallel to each other through bolts; two pieces of angle aluminum at the tops of the synchronous jacking trolleys are sequentially connected to form a U-shaped mounting groove, and the outer wall of the water seal body is attached to the inner wall of the mounting groove; a plurality of first clamps and second clamps are arranged on the side wall of the mounting groove, and the water seal body is fixed in the mounting groove through the first clamps and the second clamps. According to the utility model, the design is reasonable, a plurality of sets of synchronous jacking trolleys are assembled together by using the angle aluminum, and then the water seal body is fixed in the mounting groove through the first clamp and the second clamp, so that the whole water seal body can be tiled and fixed in a mounting room, the subsequent punching and water seal action test are facilitated, and the water seal replacement period is shortened.

The present invention discloses a tension and compression bidirectional limiting device for structural joints of a navigable aqueduct, which relates to the technical application fields of civil engineering and earthquake engineering. It includes two groups of steel plates, each group of steel plates including a mounting backplate and a plurality of triangular steel plates; the tips of the triangular steel plates of the two groups of steel plates are cross-stacked; a chute is provided in the middle of each triangular steel plate; a fixed cylinder is arranged on one side of the chute close to the mounting backplate, and a sliding cylinder is arranged in the overlapping area of the chutes of the two groups of triangular steel plates. The present invention is a steel structure, which can provide sufficient stiffness and the limiting ability to accurately control displacement; under strong earthquake action, when used in combination with a liquid viscous damper, it can accurately limit the relative displacement between the troughs while reducing vibration and consuming energy, and replace the water stop at the structural joint to bear the tensile force and collision force caused by excessive relative displacement, thereby protecting the water stop from being damaged. The present invention also relates to a method for using this tension and compression bidirectional limiting device for structural joints of a navigable aqueduct.

The invention discloses a ship lift long nut-short screw safety mechanism thread pair gap real-time monitoring system and method based on computer vision, and the system comprises an image collection module which is used for obtaining a real-time image of a thread pair, and carrying out the distortion correction of the image through a hardware compensation module and a software compensation module; the image processing module is used for carrying out key point detection on the acquired image, identifying a nut column angular point and a thread angular point, and storing two-dimensional image coordinate values of the nut column angular point and the thread angular point; the back projection module is used for converting the two-dimensional image coordinate value into a three-dimensional physical space coordinate based on a projection matrix and further calculating a thread pair gap value; and the display and early warning module is used for displaying the gap value of the thread pair, the historical trend curve and the image video stream in real time, and triggering multi-stage early warning when the gap is abnormal. According to the ship lift long nut-short screw safety mechanism thread pair gap real-time monitoring system and method based on computer vision, high-precision and high-real-time non-contact measurement on the safety mechanism thread pair gap can be achieved.

The utility model relates to the technical field of winch type vertical ship lifts, in particular to a shipyard ship lift platform locking structure used for pier loading and launching of ships, which comprises a hanging bracket structure and a locking support arranged on the wall of a harbor basin, and the hanging bracket structure is connected with a ship bearing platform of a ship lift into a whole; pulling plates are arranged on the two sides of the hanging bracket structure, the pulling plates are arranged on the two sides of a movable pulley, and the movable pulley is connected with a fixed pulley block of the ship lift through a traction rope; a mandrel is arranged at the axis of the movable pulley, a shaft sleeve is embedded in the mandrel, and the shaft sleeve is a sliding bearing and is sleeved on the outer side of the mandrel in a matched manner; pear-shaped holes are formed in the upper portion of the pulling plate, pin shafts are arranged on the two sides of the locking support, and the two ends of the pin shafts are correspondingly installed in the pear-shaped holes; according to the utility model, the plug pin difficulty is greatly reduced, and the equipment failure rate is reduced; the designed pulling plate counterweight structure enables the ship bearing platform to face various different ship conditions, the vertical posture of the hanging bracket structure can be kept, and hole alignment is easy.

Systems and method for launching and recovering marine vessels are provided. The systems include buoyant pontoon coupled with suspension frames, hoists coupled to the suspension frames, and a lift platform suspended from the suspension frames via the hoists. The hoists are configured to raise and lower the lift platform relative to the suspension frames to launch and recover vessels. The height of the pontoons relative to sea level is modifiable, allowing the system to be tide independent.

An anti-collision protection device for the side wall of a ship chamber of a ship lift comprises a mounting plate, supporting plates are fixed to the two ends of the mounting plate, and lead screws are rotatably mounted on the supporting plates and driven by servo motors; the front face of the adjusting plate is detachably connected with the movable plate, and the front face of the movable plate is connected with the buffer plate through the damper. The anti-collision protection device for the side wall of the ship chamber of the ship lift can achieve lifting and is convenient to overhaul.

The invention discloses a ship lift large-modulus gear rack stress monitoring device and method. The ship lift large-modulus gear rack stress monitoring device mainly comprises a laser monitoring array, a monitoring module, an equivalent strain contact module, a stress contact module and a main control module. Under a calibration working condition, constructing a finite element model through a laser monitoring array and an equivalent strain contact module; the stress contact module is used for monitoring a gear stress state of the gear in a liquid-gas spring pressure relief and pressurization state and a gear and rack transmission state in real time; the monitoring module is used for monitoring the pressure value of a rodless cavity of the liquid-gas spring and the dynamic expansion and contraction amount of a piston rod of the liquid-gas spring. The master control module controls the hydraulic system to achieve dynamic pressure control and adjustment of the liquid-gas spring, and a tooth surface meshing area of the gear is not stressed. According to the ship lift large-modulus gear rack stress monitoring device and method, it can be ensured that the gear rack is not stressed when a ship chamber is in butt joint with an upper lock head and a lower lock head.

The driving device of the ship lift lock head working door comprises a door leaf and a lock head structure, supporting assemblies are symmetrically arranged on the two sides of the lock head structure, supporting sealing sets are arranged on wall plates on the two sides of a lock head, one end of a spline shaft is connected with the supporting assemblies, and the other end of the spline shaft penetrates through the supporting sealing sets and extends to the outer sides of the wall plates. Lug plate assemblies are symmetrically and fixedly arranged at the bottom of the gate leaf and connected with the spline shaft, the first end of the crank arm is connected with the end, located on the outer side of the wall plate, of the spline shaft, one end of the hydraulic oil cylinder is hinged to the hydraulic oil cylinder support, the other end of the hydraulic oil cylinder is hinged to the second end of the crank arm, and the hydraulic oil cylinder is in signal connection with the controller. The driving device solves the technical problems that an existing driving device is complex in structure and inconvenient to maintain, and the technical effects that the structure is simple, maintenance is convenient, and the reliability of long-term operation of a gate is ensured are achieved.

A ship lift ship chamber and upstream butt joint method suitable for a low navigation water level comprises the steps that firstly, the maximum variable amplitude of upstream periodic water level changes is calculated and compared with the designed maximum misloading water depth of a ship lift, and the direct butt joint feasibility of a ship chamber is judged; if the misloading water depth limit is exceeded, dynamically selecting a ship chamber butt joint position by combining the time when the ship enters and exits from the chamber and the water level change period: for a large-draft ship, positioning the ship chamber below the maximum variable amplitude middle position to avoid stranding; a snack ship is positioned above the middle position so as to shorten the carriage passing time. Through autonomous water level analysis and dynamic docking decision, the safety of ship compartment docking under the low water level condition is achieved.

A vertical force transmission horizontal displacement jacking device comprises a jacking hydraulic oil cylinder, the jacking hydraulic oil cylinder is installed on an oil cylinder support, a piston rod of the jacking hydraulic oil cylinder is connected with a wedge-shaped block, the wedge-shaped block is used for sliding in a guide groove, the wedge-shaped block is matched with a jacking block, and the wedge-shaped block is used for driving the jacking block to move when moving; the jacking block is hinged to the fixing support through a connecting rod. The jacking devices are symmetrically arranged on the two sides of the ship chamber, and the jacking devices are mainly used for jacking the ship chamber in the longitudinal direction in the butt joint period and bearing the horizontal load acting on the ship chamber. And power in the vertical direction is converted into displacement in the horizontal direction, so that the device can adapt to various working environments, and the safety and the stability in the jacking process can be ensured.

The application discloses a ship lift bearing ship chamber on-line monitoring method and monitoring system, including the following contents: data monitoring, data acquisition, state evaluation and fault analysis; the health state of the equipment of the ship lift is evaluated according to the collected data; if the evaluation result is abnormal, a prewarning or alarm signal is sent according to the abnormal degree; when the alarm is monitored, the collected data is compared with the data in the data storage module, the alarm information is diagnosed and analyzed to generate the equipment fault maintenance decision; the application monitors the structure capacity and operation posture of the bearing ship chamber, and realizes real-time control of the structure performance index and equipment operation state of the bearing ship chamber, so that the bearing ship chamber is monitored; when the health state of the bearing ship chamber is in an abnormal state, the bearing ship chamber is adjusted and maintained in time; when the alarm signal is received, the monitoring data is compared with the data in the data storage module, the fault diagnosis is quickly obtained, and the maintenance decision is given.

The invention relates to the technical field of ship lifters, and particularly discloses a ship lift counterweight system steel wire rope assembling and disassembling system and method.The ship lift counterweight system steel wire rope assembling and disassembling system comprises an auxiliary rope winding and unwinding device arranged on the same side with a counterweight system and provided with an auxiliary rope and a rope winding and unwinding device installed on a ship reception chamber; the auxiliary rope take-up and pay-off device is mounted on a supporting platform for mounting a guide pulley block; when the steel wire rope is detached, the auxiliary rope is connected with the steel wire rope, the other end of the steel wire rope is connected with the rope winding and unwinding device, the auxiliary rope is wound off through the auxiliary rope winding and unwinding device, and meanwhile the steel wire rope is wound off through the rope winding and unwinding device. When the steel wire rope is installed, the auxiliary rope is wound around the guide pulley block to be connected with a new steel wire rope wound on the rope winding and unwinding device, the auxiliary rope is wound through the auxiliary rope winding and unwinding device, and meanwhile the new steel wire rope is unwound through the rope winding and unwinding device. The ship lift counterweight system steel wire rope quick dismounting device effectively realizes quick dismounting of the ship lift counterweight system steel wire rope, ensures normal and stable operation of the counterweight system, and effectively avoids the phenomenon of rope slipping.

The invention discloses an unloading method and device for main lifting equipment of a steel wire winch underwater ship lift, and belongs to the technical field of ship lift engineering.The unloading method comprises the steps that configuration parameters of the ship lift are obtained, and the water load needing to be discharged by a ship chamber is calculated according to the configuration parameters; the ship chamber is drained according to the water load, the winch is started to lift the ship chamber after drainage, the balance weight descends to the ground, and the steel wire rope on the balance weight side is gradually loosened until unloading is completed; the winding drums are locked, the ship chamber side steel wire rope needing to be unloaded is determined, and single-winding-drum unloading is sequentially conducted according to the winding drums where the ship chamber side steel wire rope is located; the single winding drum unloading comprises the steps that a leveling oil cylinder corresponding to a target winding drum is started to stretch out, a ship chamber side steel wire rope on the leveling oil cylinder is gradually loosened till unloading is completed, and after corresponding overhauling is completed, the leveling oil cylinder is started to retract till the load value of the ship chamber side steel wire rope is reset. Compared with a traditional hydraulic jack unloading mode, time and labor are saved, and the device is suitable for application and popularization.