A ship lock gate anti-collision device and anti-collision method

Abstract

The present invention relates to a ship lock gate anti-collision device and an anti-collision method. The anti-collision device includes an energy dissipation counterweight assembly, a floating drum frame, a double-drum winch, and a blocking cable; the energy dissipation counterweight assembly includes a first-stage energy dissipation counterweight, a connecting chain, a second-stage energy dissipation counterweight, and a lifting chain; the double-drum winches are symmetrically distributed on the top of the lock walls on both sides of the ship lock, and include a motor, a block brake, a blocking cable open pinion and shaft, a blocking cable open gear, a blocking cable drum and shaft, a jaw clutch, a counterweight open pinion and shaft, a counterweight open gear, a counterweight drum and shaft, and a drum ratchet lock assembly for unidirectionally locking the counterweight drum and shaft; the blocking cable includes a blocking cable that spans the ship lock chamber and connects the double-drum winches on both sides of the chamber; the floating drum frame includes a floating drum, a frame, and a steering shaft. Compared with the prior art, the structure of the present invention is simpler, and the installation and transformation of the whole set of devices on one side can be realized in a ship lock chamber well groove, saving space.

Description

Technical Field

[0001] The present invention relates to the technical field of lock equipment, and particularly relates to a lock gate anti-collision device and an anti-collision method. Background Art

[0002] In lock equipment and facilities, in order to ensure safe operation, some large locks are equipped with anti-collision warning devices. The purpose is to remind ship drivers to operate carefully after the ship enters the lock chamber and approach the lock gate at the specified speed. At the same time, if a ship gets out of control or misoperates, the anti-collision device will play a certain blocking role, slowing down the ship and reducing the damage that may be caused by collisions. Common anti-collision warning devices are composed of ship-blocking steel wires, warning signs, lifting frames, fixed double-drum hoists and embedded parts, etc. The ship-blocking steel wire of this type of anti-collision device is hinged to the lifting frame, and there is no energy dissipation system. When a ship with a stalled speed hits the ship-blocking steel wire, the huge impact force is transmitted through the steel wire to the lifting frame, and finally through the track embedded parts to the lock wall well slot, and in severe cases, it directly causes irreversible damage to the lifting frame and the concrete of the lock wall well slot. This type of anti-collision warning device mainly functions as a warning, and its anti-collision function is insufficient. For example, the lock anti-collision device mentioned in the patent CN111402553A "A Lock Anti-Collision System with a Ship-Retaining Cable Lowering Protection Device",

[0003] Relevant literature has also disclosed lock anti-collision devices with energy dissipation systems. For example, the lock anti-collision device proposed by B. Voznesensky et al. in "Anti-Collision Devices of Locks" includes an energy dissipation circuit and an anti-collision chain lifting system circuit. The two circuits are relatively independent. The energy dissipation circuit is composed of an anti-collision chain, a frame and a braking system with a hydraulic buffer. Rao Gangqiang's "Anti-Collision Equipment for the Second Lock of the Gezhouba Water Control Project" mentions a lock anti-collision device with hydraulic braking equipment. Such anti-collision devices in the literature all have the disadvantages of relatively complex structures, requiring more space to arrange the anti-collision system, and being cumbersome to overhaul and maintain. Summary of the Invention

[0004] The purpose of the present invention is to provide a lock gate anti-collision device and an anti-collision method.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A lock gate anti-collision device includes an energy dissipation counterweight assembly, a floating barrel frame, a double-drum hoist and a blocking chain cable;

[0006] The energy dissipation counterweight assembly includes a first-stage energy dissipation counterweight, a connecting chain, a second-stage energy dissipation counterweight and a lifting chain. The second-stage energy dissipation counterweight is arranged below the first-stage energy dissipation counterweight and is connected to the first-stage energy dissipation counterweight through the connecting chain, and the lifting chain is connected above the first-stage energy dissipation counterweight;

[0007] The described double-drum hoist is symmetrically distributed on the top of the lock walls on both sides of the ship lock and is installed on the top of the reserved anti-collision device lock groove on the lock wall. It includes a motor, a block brake, an open-type small gear and shaft for the blocking chain, an open-type large gear for the blocking chain, a blocking chain cable drum and shaft, a jaw clutch, an open-type small gear and shaft for the counterweight, an open-type large gear for the counterweight, a counterweight drum and shaft, and a drum ratchet lock assembly for unidirectional locking of the counterweight drum and shaft. The open-type large gear for the blocking chain is connected to the blocking chain cable drum and shaft and meshes with the open-type small gear and shaft for the blocking chain for transmission. The open-type large gear for the counterweight is connected to the counterweight drum and shaft and meshes with the open-type small gear and shaft for the counterweight for transmission. The motor is shaft-coupled with the block brake and then connected to the open-type small gear and shaft for the blocking chain. The open-type small gear and shaft for the blocking chain and the open-type small gear and shaft for the counterweight are coaxially connected through a jaw clutch;

[0008] The described blocking chain cable includes a blocking chain that spans the lock chamber of the ship lock and connects the double-drum hoists on both sides of the lock chamber;

[0009] The described buoy frame includes a buoy, a frame, and a steering shaft. The frame is arranged on the buoy, and a steering shaft is arranged on the frame. The buoy frame is installed in the lock groove, below the double-drum hoist, and can automatically lift and lower in the lock groove with the change of water level. The lifting chain passes through the buoy frame and connects to the counterweight drum and shaft. The blocking chain bypasses the steering shaft and then connects to the blocking chain cable drum and shaft.

[0010] Preferably, the double-drum hoist further includes a speed reducer and a coupling. After the motor is shaft-coupled with the block brake, it is connected to the high-speed input shaft of the speed reducer. One end of the shaft of the open-type small gear and shaft for the blocking chain is connected to the low-speed output shaft of the speed reducer through a coupling, and the other end is coaxially connected to the open-type small gear and shaft for the counterweight through a jaw clutch.

[0011] Preferably, the first-stage energy-dissipating counterweight and the second-stage energy-dissipating counterweight of the energy-dissipating counterweight assembly are connected by four connecting chains. The lower end of the lifting chain is connected to the first-stage energy-dissipating counterweight. An anti-overload hanging weight is arranged in the middle of the lifting chain. The upper end of the lifting chain is connected to the energy-dissipating counterweight lifting steel wire rope. The energy-dissipating counterweight lifting steel wire rope is wound around the counterweight drum and shaft, and the rope end is fixed to the counterweight drum and shaft through a pressing plate.

[0012] Preferably, the frame of the buoy frame is provided with a counterweight chain cable hole and a blocking chain cable hole. The steering shaft is installed at the front end of the frame in the middle of the blocking chain cable hole. The lifting chain and the energy-dissipating counterweight lifting steel wire rope of the energy-dissipating counterweight assembly pass through the counterweight chain cable hole. The anti-overload hanging weight is located below the counterweight chain cable hole. After the blocking chain bypasses the steering shaft, its upper end is connected to the blocking chain lifting steel wire rope. The blocking chain lifting steel wire rope is wound around the blocking chain cable drum and shaft, and the rope end is fixed to the blocking chain cable drum and shaft through a pressing plate.

[0013] Preferably, the drum ratchet lock assembly includes a large ratchet, a pawl, and an electric hydraulic push-pull device with a built-in return spring. The large ratchet is bolted to the counterweight drum and the non-large gear mounting end of the shaft through flange holes. A connecting rod is welded to the back of the pawl and is hinged to the electric hydraulic push-pull device. The piston rod end of the electric hydraulic push-pull device is hinged to the winch base bracket. The drum ratchet lock assembly maintains the pawl in contact with the ratchet teeth of the ratchet wheel through the action of the built-in return spring of the electric push-pull device. The pawl is disengaged from the ratchet teeth of the ratchet wheel by controlling the electric hydraulic push-pull device and maintains the disengaged state.

[0014] Further preferably, the ship lock gate anti-collision device also includes a control system, which connects the motor, the block brake, the tooth clutch and the electric hydraulic pusher and puller.

[0015] More preferably, the counterweight drum and shaft and the arresting chain drum and shaft are provided with a load meter for overload alarm and a height sensor (encoder + limit switch) for lower limit alarm of travel, and the load meter and height sensor are connected to the control system.

[0016] A method for preventing a ship lock gate from collision is implemented by using the above device.

[0017] Preferably, the anti-collision method for lock gates comprises the following steps: the first row of ships entering the lock on the downstream side collides with the arresting chain due to brake failure or misoperation, the arresting chain intercepts the stalled ship, and at the same time the arresting force is transmitted to the double-drum winches on both sides through the arresting chain and the lifting wire rope, so that the arresting chain rope drum and shaft unwind and rotate, and the connected tooth clutch drives the counterweight drum and shaft to reel and rotate, and starts to lift the first-stage energy dissipation counterweight, and at the same time the first-stage energy dissipation counterweight pulls the second-stage energy dissipation counterweight up together through the connecting chain.

[0018] Further preferably, when the kinetic energy of the stalled ship exceeds the rated design energy dissipation value of the anti-collision device, the lifting height of the first-stage energy dissipation counterweight and the second-stage energy dissipation counterweight is greater than the rated design value, and the anti-overload hammer on the counterweight lifting chain contacts the bottom of the counterweight chain cable hole of the buoy frame, pulling the buoy frame up together.

[0019] When a ship enters the lock, the present invention uses a blocking chain to intercept out-of-control or misoperated ships. After the blocking chain for ship interception is tensioned, the pulling force is transmitted through transmission devices such as a drum, an open gear set, and a clutch, and is converted into the gravitational potential energy of an energy-dissipating counterweight, so that the stalled ship is braked before colliding with the lock gate, protecting the gate. By setting a jaw clutch in the hoisting mechanism (double-drum hoist) and combining it with a control system, a single set of power systems on one side realizes the combination of the lifting system circuit of the blocking chain of the ship lock anti-collision device and the energy-dissipating circuit. And by setting two-stage energy-dissipating counterweights, while realizing the self-balancing of the anti-collision chain tension by using the gravity of the counterweights, the daily working load of the hoisting mechanism is reduced. By setting a floating barrel rack, the lifting height of the blocking chain cable is automatically set according to the change of the lock chamber water level, and the working state of the blocking chain cable is maintained at a certain height above the water surface.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. The structure of the present invention is simple. By setting a clutch in the hoisting mechanism to control the hoisting power distribution and the sequence, the energy-dissipating circuit of the ship lock anti-collision device and the lifting circuit of the blocking chain are realized in one set of devices. Compared with the ship lock anti-collision device with hydraulic energy absorption, one set of hoisting mechanism is reduced, and the structure is simpler. The whole set of devices can be installed and transformed unilaterally in the lock chamber shaft of a ship lock, saving space;

[0022] 2. The present invention is safe and reliable. The device is designed with an energy-dissipating counterweight, which converts the kinetic energy of the stalled ship into the gravitational potential energy of the energy-dissipating counterweight, effectively protecting the lock gate, avoiding ship collisions, and improving the safety of the lock structure equipment;

[0023] 3. The present invention has graded counterweights to improve the service life. The energy-dissipating counterweights are set in grades. Under normal circumstances, only half of the counterweight weight is lifted to tension the blocking chain, and all the energy-dissipating counterweights are used only during anti-collision interception, reducing the daily load of the hoisting mechanism and extending the service life of the device;

[0024] 4. The present invention has strong recoverability and is convenient for maintenance. Within the designed anti-collision capacity range, the kinetic energy of the stalled ship is converted into the gravitational potential energy of the energy-dissipating counterweight, and finally the energy is dissipated under the interaction of the transmission device and the water in the lock chamber. The device can automatically recover to the state before the collision, and no maintenance and replacement of parts are required after the collision;

[0025] 5. The present invention can automatically adapt to the water level height and has good convenience. The floating barrel rack uses buoyancy to automatically lift and lower with the lock chamber water level, automatically setting the lifting elevation of the blocking chain at a certain height above the water surface, realizing accurate automatic adjustment of the blocking chain height;

[0026] 6. The chain cable of the present invention is self-balanced, improving the interception effect. While achieving the tension self-balancing of the blocking chain by utilizing the gravity of the counterweight, the blocking chain is always kept taut and straight, with a small middle sag, effectively avoiding problems such as the slack of the blocking chain and large middle sag caused by device deformation and chain cable relaxation, thus maintaining a good interception effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the ship lock anti-collision device of the present invention;

[0028] Figure 2 It is a schematic diagram of the structure of the double-drum winch of the present invention;

[0029] Figure 3 It is a schematic diagram of the structure of the drum ratchet lock assembly of the present invention;

[0030] Figure 4 It is a schematic diagram of the structure of the buoy frame of the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the energy dissipation counterweight assembly of the present invention;

[0032] Figure 6 It is a flowchart of the control method of the present invention;

[0033] In the figure: 100 - energy dissipation counterweight assembly, 101 - secondary energy dissipation counterweight, 102 - connecting chain, 103 - primary energy dissipation counterweight, 104 - lifting chain, 105 - anti-overload hanging hammer, 106 - energy dissipation counterweight lifting steel wire rope, 200 - buoy frame, 201 - buoy, 202 - frame, 203 - pulley, 204 - counterweight chain cable hole, 205 - blocking chain cable hole, 206 - steering shaft, 300 - double-drum winch, 301 - motor, 302 - block brake, 303 - reduction gearbox, 304 - coupling, 305 - blocking chain open-type pinion and shaft, 306 - blocking chain open-type large gear, 307 - blocking chain cable drum and shaft, 308 - jaw clutch, 309 - counterweight open-type pinion and shaft, 310 - counterweight open-type large gear, 311 - counterweight drum and shaft, 312 - drum ratchet lock assembly, 313 - base, 314 - large ratchet wheel, 315 - ratchet pawl, 316 - electro-hydraulic pusher, 400 - blocking chain cable, 401 - blocking chain, 402 - blocking chain lifting steel wire rope. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The present invention will be described in detail below with reference to the drawings and specific embodiments. The following embodiments are implemented on the premise of the technical solution of the present invention, and the detailed implementation manners and specific operation processes are given, but the protection scope of the present invention is not limited to the following embodiments.

[0035] Embodiment 1

[0036] An anti-collision device for a lock gate, such as Figure 1 shown, which includes an energy dissipation counterweight assembly 100, a buoyant barrel frame 200, a double-drum hoist 300, and a blocking cable 400.

[0037] Specifically, as Figure 4 shown, the energy dissipation counterweight assembly 100 includes a first-stage energy dissipation counterweight 103, a connecting chain 102, and a second-stage energy dissipation counterweight 101 that are connected in sequence from top to bottom. A lifting chain 104 is connected above the first-stage energy dissipation counterweight 103.

[0038] The double-drum hoists 300 are symmetrically distributed on the tops of the lock walls on both sides of the lock. The specific structure is as Figure 2 shown, which includes a motor 301, a block brake 302, a blocking cable open pinion and shaft 305, a blocking cable open gear 306, a blocking cable drum and shaft 307, a jaw clutch 308, a counterweight open pinion and shaft 309, a counterweight open gear 310, and a counterweight drum and shaft 311. Among them, the blocking cable open gear 306 is connected to the blocking cable drum and shaft 307 and meshes with the blocking cable open pinion and shaft 305 for transmission. The counterweight open gear 310 is connected to the counterweight drum and shaft 311 and meshes with the counterweight open pinion and shaft 309 for transmission. The motor 301 is shaft-connected to the block brake 302 and then connected to the blocking cable open pinion and shaft 305. The blocking cable open pinion and shaft 305 and the counterweight open pinion and shaft 309 are coaxially connected through the jaw clutch 308. The double-drum hoist 300 also includes a drum ratchet lock assembly 312 for unidirectionally locking the counterweight drum and shaft 311.

[0039] The blocking cable 400 includes a blocking cable 401 that spans the lock chamber and connects the double-drum hoists 300 on both sides of the chamber. As Figure 3 shown, the buoyant barrel frame 200 includes a buoy 201, a frame 202, and a steering shaft 206 provided on the frame 202. The frame 202 is provided on the buoy 201. The buoyant barrel frame 200 is installed in the gate slot, below the double-drum hoist 300. The lifting chain 104 passes through the buoyant barrel frame 200 and connects to the counterweight drum and shaft 311. The blocking cable 401 bypasses the steering shaft 206 and then connects to the blocking cable drum and shaft 307.

[0040] Embodiment 2

[0041] A ship lock gate anti-collision device, which mainly consists of an energy dissipation and counterweight assembly 100, a buoy frame 200, a double-drum winch 300, and a blocking chain cable 400; the double-drum winch 300 includes a motor 301, an electro-hydraulic block brake 302, a reduction gearbox 303, a coupling 304, a blocking chain open-type pinion and shaft 305, a blocking chain open-type large gear 306, a blocking chain cable drum and shaft 307, a jaw clutch 308, a counterweight open-type pinion and shaft 309, a counterweight open-type large gear 310, a counterweight drum and shaft 311, a drum ratchet lock assembly 312, a shaft seat, and a base 313; the energy dissipation and counterweight assembly 100 includes a first-stage energy dissipation and counterweight 103, a connecting chain 102, a second-stage energy dissipation and counterweight 103, a lifting chain 104, an anti-overload hanging hammer 105, and an energy dissipation and counterweight lifting steel wire rope 106; the buoy frame 200 includes a buoy 201, a frame 202, and a steering shaft 206; the blocking chain cable 400 includes a blocking chain 401 and a blocking chain lifting steel wire rope 402. The double-drum winch 300, the energy dissipation and counterweight assembly 100, and the buoy frame 200 are symmetrically distributed on the top of the lock walls on both sides of the ship lock and in the lock grooves, appear in pairs, and are connected by the blocking chain cable 400.

[0042] Specifically, the above-mentioned blocking chain cable drum and shaft 307 are installed on the base 313 through a shaft and a bracket, and the blocking chain open-type large gear 306 is connected to the blocking chain cable drum and shaft 307 through flange hole bolts and meshes with the blocking chain open-type pinion and shaft 305 for transmission.

[0043] The above-mentioned counterweight drum and shaft 311 are installed on the base 313 through a shaft and a bracket, and the counterweight open-type large gear 310 is connected to the counterweight drum and shaft 311 through flange hole bolts and meshes with the counterweight open-type pinion and shaft 309 for transmission.

[0044] After the above-mentioned motor 301 is shaft-coupled with the electro-hydraulic block brake 302, it is connected to the high-speed input shaft of the reduction gearbox 303. One end of the blocking chain open-type pinion and shaft 305 is connected to the low-speed output shaft of the reduction gearbox 303 through a coupling 304 and is installed and fixed on the base 313. The blocking chain open-type pinion and shaft 305 are installed and fixed on the base 313 through a shaft seat.

[0045] The above-mentioned counterweight open-type pinion and shaft 309 are coaxially installed and fixed on the base 313 with the blocking chain open-type pinion and shaft 305 through a shaft seat.

[0046] The above-mentioned jaw clutch 308 is normally closed, and the blocking chain open-type pinion and shaft 305 and the counterweight open-type pinion and shaft 309 are coaxially connected through the jaw clutch 308.

[0047] The above-mentioned drum ratchet lock assembly 312 includes a large ratchet wheel 314, a pawl 315, and an electro-hydraulic pusher 316.

[0048] The above-mentioned large ratchet wheel 314 is connected to the non-large gear installation end of the counterweight drum and shaft 311 through flange hole bolts.

[0049] The above-mentioned electro-hydraulic pusher 316 is internally provided with a return spring. The piston connecting rod is hinged to the base bracket of the hoist. When powered off, the piston connecting rod is in the extended state. When working under power, the piston connecting rod contracts, and the distance between the hinge point of the installation base of the electro-hydraulic pusher 316 and the hinge of the piston connecting rod is shortened.

[0050] A connecting rod is welded to the back of the pawl 315 of the above-mentioned drum ratchet lock assembly 312 so as to be hinged to the installation base of the electro-hydraulic pusher 316.

[0051] The above-mentioned drum ratchet lock assembly 312 keeps the pawl in contact with the ratchet teeth through the action of the return spring internally provided in the electro-hydraulic pusher 316.

[0052] The above-mentioned drum ratchet lock assembly 312 can make the pawl 315 disengage from the ratchet teeth of the ratchet wheel 314 by controlling the electro-hydraulic pusher 316 and maintain the disengaged state.

[0053] The first-stage energy-dissipating counterweight 103 and the second-stage energy-dissipating counterweight 101 of the above-mentioned energy-dissipating counterweight assembly 100 are connected by four connecting chains 102. The lower end of the lifting chain 104 is connected to the first-stage energy-dissipating counterweight 103. An overload-proof hanging weight 105 is arranged in the middle of the lifting chain 104. The upper end of the lifting chain 104 is connected to the energy-dissipating counterweight lifting steel wire rope 106.

[0054] The above-mentioned energy-dissipating counterweight lifting steel wire rope 106 is wound around the counterweight drum and shaft 311, and the rope end is fixed to the counterweight drum and shaft 311 through a pressing plate.

[0055] The above-mentioned floating drum frame 200 includes a frame 202 and a floating drum 201 welded together. Sliders are installed at the front and rear parts of the frame 202, and pulleys 203 are installed on both sides.

[0056] A counterweight chain hole 204 and a blocking chain hole 205 are arranged in the middle of the above-mentioned floating drum frame 200. The steering shaft 206 is installed at the front end of the middle part of the blocking chain hole 205 of the frame.

[0057] The above-mentioned floating drum frame 200 is installed in the gate slot, below the double-drum hoist 300. The lifting chain 104 and the energy-dissipating counterweight lifting steel wire rope 106 of the energy-dissipating counterweight assembly 100 are installed and pass through the counterweight chain hole 204 of the floating drum frame.

[0058] The overload-proof hanging weight 105 in the above-mentioned energy-dissipating counterweight assembly 100 is located below the counterweight chain hole 204 of the floating drum frame.

[0059] The blocking chain 401 of the above-mentioned assembly spans across the lock chamber and connects the double-drum hoists 300 on both sides of the lock chamber.

[0060] The above-mentioned arresting cable 401 bypasses the buoy frame steering shaft 206 and is connected to the arresting cable lifting steel wire rope 402 at its upper end.

[0061] The above-mentioned arresting cable lifting steel wire rope 402 is wound around the arresting cable drum and shaft 307, and the rope end is fixed to the arresting cable drum and shaft 307 through a pressing plate.

[0062] The working process of the control method for the anti-collision device of the lock gate in this embodiment is as Figure 5 shown:

[0063] 1) Start the anti-collision device

[0064] In the initial state of the anti-collision device, the jaw clutch 308 is in the normally closed state (the arresting cable drum and shaft 307 and the counterweight drum and shaft 311 are in the connected state), the arresting cable 401 sinks to the bottom of the underwater lock chamber, the drum ratchet lock assembly 312 is locked unidirectionally (it can only be wound and rotated unidirectionally, and the unwinding is prevented), the motor-end electro-hydraulic block brake 302 is braked, and the first-stage energy-dissipating counterweight 103 and the second-stage energy-dissipating counterweight 101 are located at the bottom of the well groove.

[0065] After the ship passing through the lock upstream has left the lock, the lock enters the downstream state. First, control the hoist motor 301 to reverse (the counterweight drum and shaft 311 wind and rotate, and the arresting cable drum and shaft 307 unwind and rotate), and at the same time release the electro-hydraulic block brake 302. The drum ratchet lock assembly 312 winds and lifts the first-stage energy-dissipating counterweight 103, the arresting cable drum and shaft 307 unwinds, and the arresting cable lifting steel wire rope 402 is lowered. After a travel of about 1 meter, the connecting chain 102 between the first-stage energy-dissipating counterweight 103 and the second-stage energy-dissipating counterweight 101 is tensioned, the load cell of the counterweight drum and shaft 311 alarms, and at the same time the arresting cable drum and shaft 307 is lowered by about 1 meter to reach the lower limit alarm of the travel. If either of the two conditions is met, the motor 301 stops, and at the same time. When the counterweight drum and shaft 311 winds, due to the action of the drum ratchet lock assembly 312, it is ensured that the counterweight drum and shaft 311 can only wind and rotate, and the unwinding is prevented. After the motor stops, the lifted first-stage energy-dissipating counterweight 103 can also be locked at a certain height.

[0066] Next, disconnect the jaw clutch 308, control the motor 301 to start rotating forward, and at the same time release the block brake 302, and the arresting cable drum and shaft 307 starts to wind and rotate. After disconnecting the jaw clutch 308, due to the action of the drum ratchet lock assembly 312, the first-stage energy-dissipating counterweight 103 in the previous step remains at the lifted height without moving. The arresting cable 401 follows the lifting of the arresting cable lifting steel wire rope 402 and rises out of the water surface by about 0.5 meter and then contacts the buoy frame steering shaft 206. The arresting cable drum and shaft 307 continues to wind, and the arresting cable 401 hanging across the lock chamber water surface starts to be tensioned. When the alarm value of the load cell of the arresting cable drum and shaft 307 is reached, the motor 301 stops, and at the same time the block brake 302 is braked.

[0067] Finally, close the jaw clutch 308, control the reverse-start motor 301, and at the same time release the block brake 302 and unlock the drum ratchet lock assembly 312. When the unlocking push rod position switch of the drum ratchet lock assembly 312 is in place, the motor 301 stops. At this time, the arrester cable drum and shaft 307 and the counterweight drum and shaft 311 are in a connected state, the block brake 302 is released, and the drum ratchet lock assembly 312 is kept in an unlocked state. The first-stage energy-dissipating counterweight 103 and the tensioned arrester cable 401 are in a gravity self-balanced state. The entire device enters the arrester and anti-collision working state, and the downstream ship starts to enter the lock.

[0068] 2) Arrester and anti-collision process

[0069] The first row of downstream ships entering the lock hits the arrester cable due to braking failure or misoperation. The arrester cable 401 intercepts the stalled ship, and at the same time, the arresting force is transmitted to the double-drum winches 300 of the lifting mechanisms on both sides through the arrester cable 401 and the arrester cable lifting wire rope 402, causing the arrester cable drum and shaft 307 to unwind and rotate. The connected jaw clutch 308 drives the counterweight drum and shaft 311 to wind and rotate, starting to lift the first-stage energy-dissipating counterweight 103. At the same time, the first-stage energy-dissipating counterweight 103 pulls the second-stage energy-dissipating counterweight 101 to rise together through the connecting chain 102. The kinetic energy of the stalled ship is converted into the gravitational potential energy of the counterweight, realizing the anti-collision function and protecting the miter gate. During the whole process, electrical equipment such as the motor 301, the block brake 302, and the drum ratchet lock assembly 312 do not participate, and the two parallel drum groups can be regarded as a fixed pulley.

[0070] When the kinetic energy of the stalled ship exceeds the rated design energy-dissipating value of the anti-collision device, at this time, the lifting heights of the first and second-stage energy-dissipating counterweights are greater than the rated design value, and the overload prevention hanging hammer 105 on the counterweight lifting chain contacts below the buoy frame counterweight cable hole 204, pulling the buoy frame 200 to rise together. Due to the rise of the buoy frame 200, the buoyancy of the buoy 201 decreases, which is equivalent to increasing the energy-dissipating counterweight and enhancing the energy-dissipating effect. At this time, the whole device is in an overload state, and the anti-collision device maximally protects the miter gate.

[0071] 3) Initialization of the anti-collision device

[0072] After the first row of ships entering the lock stops stably, if no collision or rubbing accident occurs, the anti-collision device starts to initialize.

[0073] Start the block brake 302 to brake, start the drum ratchet lock assembly 312 to reverse stop, and open the jaw clutch 308. Since the counterweight drum and shaft 311 are hanging the first-stage energy dissipation counterweight 103, they rotate a small angle by themselves and are then reverse stopped and locked by the drum ratchet lock assembly 312. Reverse start the motor 301, and at the same time release the block brake 302. The arrester cable drum and shaft 307 start to unwind and lower the arrester cable 401. After lowering to the bottom of the brake chamber until the lower limit of the stroke (the difference between the bottom stroke of the brake chamber and the lower limit of the stroke of the arrester cable drum and shaft 307 is the length of the two-stage counterweight connection chain), the motor 301 stops, and at the same time the block brake 302 is started to brake.

[0074] Close the jaw clutch 308, reverse start the motor 301, and at the same time release the block brake 302 and unlock the drum ratchet lock assembly 312. When the unlocking push rod position switch of the drum ratchet lock assembly 312 is in place, switch to the forward rotation motor 301. The counterweight drum and shaft 311 unwind and lower the first-stage energy dissipation counterweight 103, and at the same time the arrester cable drum and shaft 307 wind up.

[0075] When reaching the lower limit of the drum stroke of the counterweight drum and shaft 311, at this time the first-stage energy dissipation counterweight 103 is stacked on the second-stage energy dissipation counterweight 101, the motor 301 stops, and at the same time the block brake 302 is started to brake and the drum ratchet 312 assembly is reverse stopped and locked, and the anti-collision device returns to the initial state.

[0076] The above description of the embodiments is for the convenience of those of ordinary skill in the art to understand and use the invention. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative efforts. Therefore, the present invention is not limited to the above embodiments, and the improvements and modifications made by those skilled in the art without departing from the scope of the present invention according to the disclosure of the present invention should be within the protection scope of the present invention.

Claims

1. An anti-collision device for a lock gate, characterized in that, It includes an energy dissipation counterweight assembly (100), a floating drum frame (200), a double-drum winch (300), and a blocking chain cable (400); The energy dissipation counterweight assembly (100) includes a first-stage energy dissipation counterweight (103), a connecting chain (102), a second-stage energy dissipation counterweight (101), and a lifting chain (104). The second-stage energy dissipation counterweight (101) is arranged below the first-stage energy dissipation counterweight (103) and is connected to the first-stage energy dissipation counterweight (103) through the connecting chain (102). The lifting chain (104) is connected above the first-stage energy dissipation counterweight (103); The double-drum winches (300) are symmetrically distributed on the top of the lock walls on both sides of the ship lock. It includes a motor (301), a block brake (302), a blocking chain open pinion and shaft (305), a blocking chain open gear (306), a blocking chain cable drum and shaft (307), a jaw clutch (308), a counterweight open pinion and shaft (309), a counterweight open gear (310), a counterweight drum and shaft (311), and a drum ratchet lock assembly (312) for unidirectionally locking the counterweight drum and shaft (311). The blocking chain open gear (306) is connected to the blocking chain cable drum and shaft (307) and meshes with the blocking chain open pinion and shaft (305) for transmission. The counterweight open gear (310) is connected to the counterweight drum and shaft (311) and meshes with the counterweight open pinion and shaft (309) for transmission. The motor (301) is shaft-connected to the block brake (302) and then connected to the blocking chain open pinion and shaft (305). The blocking chain open pinion and shaft (305) and the counterweight open pinion and shaft (309) are coaxially connected through the jaw clutch (308); The blocking chain cable (400) includes a blocking chain (401) that spans across the lock chamber and connects the double-drum winches (300) on both sides of the chamber; The floating drum frame (200) includes a floating drum (201), a frame (202), and a steering shaft (206). The frame (202) is arranged on the floating drum (201), and the steering shaft (206) is arranged on the frame (202). The floating drum frame (200) is installed below the double-drum winch (300) by the buoyancy of the floating drum (201). The lifting chain (104) passes through the floating drum frame (200) and is connected to the counterweight drum and shaft (311). The blocking chain (401) bypasses the steering shaft (206) and is then connected to the blocking chain cable drum and shaft (307).

2. The ship lock gate anti-collision device according to claim 1, characterized in that The double-drum winch (300) further includes a reduction gearbox (303) and a coupling (304). After the motor (301) is shaft-connected to the block brake (302), it is connected to the high-speed input shaft of the reduction gearbox (303). One end of the shaft of the blocking chain open pinion and shaft (305) is connected to the low-speed output shaft of the reduction gearbox (303) through the coupling (304), and the other end is coaxially connected to the counterweight open pinion and shaft (309) through the jaw clutch (308).

3. The anti-collision device for the ship lock gate according to claim 1, characterized in that, The first-stage energy dissipation counterweight (103) of the energy dissipation counterweight assembly (100) is connected to the second-stage energy dissipation counterweight (101) via four connecting chains (102); the lower end of a lifting chain (104) is connected to the first-stage energy dissipation counterweight (103); an anti-overload hanging hammer (105) is arranged in the middle of the lifting chain (104); the upper end of the lifting chain (104) is connected to an energy dissipation counterweight lifting steel wire rope (106); the energy dissipation counterweight lifting steel wire rope (106) is wound on a counterweight drum and a shaft (311); and the rope end is fixed to the counterweight drum and the shaft (311) via a pressure plate.

4. The anti-collision device for the lock gate according to claim 1, characterized in that, The frame (202) of the buoy frame (200) is provided with a counterweight chain rope hole (204) and an arresting chain rope hole (205); the steering shaft (206) is installed at the front end of the frame in the middle of the arresting chain rope hole (205); the lifting chain (104) and the energy dissipation counterweight lifting wire rope (106) of the energy dissipation counterweight assembly (100) pass through the counterweight chain rope hole (204); the anti-overload hanging hammer (105) is located below the counterweight chain rope hole (204); the upper end of the arresting chain (401) is connected to the arresting chain lifting wire rope (402) after passing around the steering shaft (206); the arresting chain lifting wire rope (402) is wound on the arresting chain rope drum and shaft (307); and the rope end is fixed to the arresting chain rope drum and shaft (307) through a pressure plate.

5. The anti-collision device for the lock gate according to claim 1, characterized in that, The drum ratchet lock assembly (312) includes a large ratchet (314), a pawl (315), and an electric hydraulic push-pull device (316) with a built-in reset spring. The large ratchet (314) is bolted to the non-large gear mounting end of the counterweight drum and the shaft (311) through flange holes. A connecting rod is welded to the back of the pawl (315) and is hinged to the electric hydraulic push-pull device (316). The piston rod end of the electric hydraulic push-pull device (316) is hinged to the winch base bracket. The drum ratchet lock assembly (312) maintains contact between the pawl (315) and the ratchet teeth of the ratchet (314) through the action of the built-in reset spring of the electric push-pull device. The pawl (315) is disengaged from the ratchet teeth of the ratchet by controlling the electric hydraulic push-pull device (316) and maintains the disengaged state.

6. The ship lock gate anti-collision device according to claim 5, characterized in that, The ship lock gate anti-collision device also includes a control system, which is connected to the motor (301), the block brake (302), the tooth clutch (308) and the hydraulic push-pull rod.

7. The anti-collision device for the lock gate according to claim 6, wherein, The counterweight drum and shaft (311) and the arresting chain drum and shaft (307) are both provided with a load meter for overload alarm and a height sensor for lower limit alarm of travel, and the load meter and the height sensor are connected to the control system.

8. A method for preventing a ship lock gate from being collided, characterized in that The method is carried out using the device as described in any one of claims 1 to 7.

9. The anti-collision method for the lock gate according to claim 8, characterized in that, The following steps are involved: The first row of ships entering the lock on the downstream side hits the arresting chain due to a brake failure or misoperation, and the arresting chain (401) intercepts the stalled ship. At the same time, the arresting force is transmitted to the double-drum winches (300) on both sides through the arresting chain (401) and the lifting wire rope (402), so that the arresting chain rope drum and the shaft (307) unwind and rotate, and the connected tooth clutch (308) drives the counterweight drum and the shaft (311) to rewind and rotate, and starts to lift the first-stage energy dissipation counterweight (103). At the same time, the first-stage energy dissipation counterweight (103) pulls the second-stage energy dissipation counterweight (101) to rise together through the connecting chain (102).

10. The method for preventing a ship lock gate from being collided according to claim 9, characterized in that, When the kinetic energy of the stalled ship exceeds the rated design energy dissipation value of the anti-collision device, the lifting height of the first-stage energy dissipation counterweight (103) and the second-stage energy dissipation counterweight (101) is greater than the rated design value, and the anti-overload hanging hammer (105) on the counterweight lifting chain contacts the lower part of the counterweight chain cable hole (204) of the buoy frame (200), pulling the buoy frame (200) to rise together.

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