A friction energy-absorbing active arresting protection device for ship lock passage

Abstract

The utility model provides an active type blocking protection device suitable for ship lock passing, mainly includes mechanical hand, guide pulley and friction energy absorption device from upstream to downstream in turn on both sides of lock chamber, the mechanical hand is caught to brake band and is hung with the ship bollard, brake band passes through guide pulley and is installed in friction energy absorption device, and friction energy absorption device carries out the brake band and is braked. Brake band end is connected with blocking cable through plain band connector. The active type blocking protection device suitable for ship lock passing can cope with the safety risk of collision lock gate during large fleet lock passing.

Description

Technical Field

[0001] This utility model relates to the field of ship arresting safety protection, and in particular to a friction energy-absorbing active arresting protection device for ships passing through locks. Background Technology

[0002] The gates located at both ends of the lock chamber are one of the main facilities of the lock. The normal opening and closing of the gates is a necessary condition for the safe operation of the lock. When the lock is running downstream, there is a risk that the ship may collide with the lower gate if it enters the lock at too high a speed or if it has a large cargo load and insufficient braking force. The collision will cause damage to the lock equipment and the ship passing through the lock, threaten the life and property safety of the ship's crew, and generate huge negative social impact and economic losses.

[0003] According to statistics, the average tonnage of cargo ships passing through the Three Gorges Dam locks increased from 2,844 tons in 2011 to 4,972 tons in 2021, while the number of ships passing through the locks in a single operation decreased from 5.37 in 2011 to 4.0 in 2021, indicating a trend towards larger cargo ships. Simultaneously, the Ministry of Transport is actively promoting the "Three Gorges Ship Type," with a length of 130 meters and a beam of 16.3 meters, which is highly compatible with the lock chamber dimensions (280m × 34m). Four ships of this type can pass through the locks simultaneously, achieving a lock chamber area utilization rate of 97% and a single passage weight of nearly 25,000 tons. With the increasing size and standardization of ships passing through the locks, the difficulty of mooring operations has also increased, and the risk of collisions with the lock gates has risen accordingly. Ensuring the safe and stable operation of the navigation structures and facilities at the Three Gorges-Gezhouba Dam and preventing navigational disruptions caused by ship collisions with the lock gates have become urgent problems that need to be solved. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a friction-absorbing active arresting protection device for ships passing through locks, so as to deal with the safety risks of large fleets colliding with lock gates during lock passage, protect the lives and property of ship owners, and ensure unobstructed navigation.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] An active arresting and protection device for ships passing through a lock includes a robotic arm, a guide wheel, and a friction energy absorption device installed sequentially from upstream to downstream on both sides of the lock chamber; the robotic arm grasps the brake band and attaches it to the ship's mooring bollard; the brake band passes through the guide wheel and is installed on the friction energy absorption device, which retracts and releases the brake band and applies braking.

[0007] The brake band end is connected to the arresting cable via a plain band connector.

[0008] The friction energy absorption device consists of a reel, a brake disc, and a friction brake; wherein, the reel is driven by a drive device to wind and release the brake band; the brake disc is arranged on both sides of the reel and is coaxial with the reel, and the friction brake is distributed on one side of the brake disc and applies friction braking to the brake disc.

[0009] A radar speedometer is installed on the downstream gate of the gate chamber.

[0010] This utility model discloses a friction-absorbing active arresting protection device for ships passing through locks, which has the following technical effects: A speed measuring (distance measuring) instrument is installed on the lower lock gate of the lock chamber to monitor the entering ship in real time. A robotic arm, guide pulley, friction energy absorption device, brake band, cable connector, and arresting cable are installed on both sides of the lock chamber to arrest overspeeding or stalling ships entering the lock. When the speed of the entering ship exceeds a preset upper limit when it is a certain distance from the lower lock gate, an audible and visual alarm is triggered to prompt the entering ship to slow down. Simultaneously, the robotic arm is activated, grabs the arresting cable, rotates it 90°, and enters working mode. As the entering ship passes, the robotic arm attaches the arresting cable to the ship's mooring bollard, the brake band is tensioned, and the arresting force is transmitted to the friction energy absorption device through the guide pulley. The friction energy absorption device converts the ship's kinetic energy into heat energy and releases it. After the ship comes to a stop and is moored, the sailor releases the arresting cable from the mooring bollard, and the retraction system of the friction energy absorption device retracts the brake band to its initial state. Technically, this avoids safety accidents caused by ships speeding or stalling and colliding with the lock gates, reduces the safety risks of passing through the lock, and protects the lives and property of ship owners. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0012] Figure 1 This is a schematic diagram of the operation of this utility model.

[0013] Figure 2 This is a schematic diagram of the installation of this utility model.

[0014] Figure 3 This is a schematic diagram of the structure of this utility model on one side of the gate.

[0015] Figure 4 This is a schematic diagram of the friction energy absorption device in this utility model.

[0016] In the diagram: 1. Robotic arm; 2. Brake band; 3. Guide pulley; 4. Friction energy absorption device; 5. Strap connector; 6. Arresting cable; 7. Speedometer; 8. Audible and visual alarm. Detailed Implementation

[0017] like Figures 1-4As shown, a friction-absorbing active arresting protection device for ships passing through a lock includes a robotic arm 1, a brake band 2, a guide pulley 3, and a friction-absorbing device 4 installed sequentially from upstream to downstream on both sides of the lock chamber; in addition, a radar speed meter 7 (or radar rangefinder) is installed on the lock gate, and an audible and visual alarm 8 is installed around the lock chamber.

[0018] like Figure 3 As shown, the robotic arm 1 is installed 40 meters from the lower gate and 1 meter from the gate wall. When not in operation, the robotic arm 1 retracts outside the gate wall; when in operation, it rotates 90° to its working position. The robotic arm 1 is an HSR-JR6210L / 165 industrial robotic arm from Huashu Robotics Co., Ltd. The robotic arm 1 uses motion imaging positioning to accurately place the arresting cable 6 onto the moving ship's mooring bollard.

[0019] like Figure 3 As shown, the guide pulley 3 is installed 2 meters downstream of the manipulator and 1 meter from the gate wall, and is fixed to the hydraulic embedded parts by screws. The guide pulley 3 consists of two sets of guide wheels, one horizontal and one vertical, which are used to change the angle of the brake band to adapt to changes in the direction of braking force.

[0020] like Figure 4 As shown, the friction energy absorption device 4 is installed on the downstream side of the guide pulley 3 and is fixed to the hydraulic embedded parts by screws. The friction energy absorption device 4 includes a reel 4-1, which is driven by a drive device 4-2 (servo motor + chain transmission mechanism) on one side to realize the winding or release of the brake band 2. Brake discs 4-3 are respectively arranged at both ends of the reel and coaxially connected to the reel. Friction brake 4-4 extends forward and contacts the brake disc 4-3 to perform friction braking. By adjusting the pressure of friction brake 4-4, different resistance and braking distance control requirements can be met.

[0021] When the friction brake 4-4 is working, it produces a braking effect, and the reel 4-1 does not rewind or releases; when the friction brake 4-4 is in a non-working state, it has no braking effect, and the reel 4-1 can perform a rotary rewinding operation.

[0022] The friction brake 4-4 uses a hydraulic piston caliper to pressurize the brake disc 4-3, thereby generating friction braking force. It is connected to a small hydraulic pump station, and the friction braking force can be changed by controlling the opening and closing of the pump station and adjusting the system pressure.

[0023] like Figures 3-4 As shown, one end of the brake band 2 is wound around the reel 4-1, and the other end passes through the guide pulley 3 and connects to the belt connector 5. The other end of the belt connector 5 is connected to the arresting cable 6. The arresting cable 6 is ring-shaped to facilitate gripping by the robotic arm 1.

[0024] The radar speedometer 7 is installed on the downstream gate of the lock chamber to measure the distance and speed of the incoming ships in real time. When the collected data exceeds the preset value, the sound and light alarm 8 automatically plays a voice message to prompt the ship to slow down, and at the same time wakes up the automatic manipulator 1 to enter the working state.

[0025] An active blocking method for ships passing through a lock includes the following steps:

[0026] Step 1: In the downstream mode of the lock, when the ship enters the lock chamber, the radar speedometer 7 starts to monitor the navigation speed v of the ship and the distance l between the ship and the gate in real time. Set the warning distance L = 50 m and the safe speed V = 0.5 m / s. When l < L, if the measured ship speed v > V, a signal is output, and the sound and light alarm 8 gives a voice warning to prompt the ship to slow down and wakes up the manipulator 1 to enter the working state; if v ≤ V, no signal is output.

[0027] Step 2: When the manipulators 1 on both sides of the lock chamber are woken up, the manipulator 1 grabs the blocking cable 6 and rotates 90° to enter the working state. When the ship passes by the manipulator 1, the manipulator 1 puts the blocking cable 6 around the ship's mooring bitt and then returns to the initial state. The friction brake 4-4 enters the working state simultaneously after the manipulator 1 is woken up.

[0028] Step 3: The ship continues to sail, the brake belt 2 is tightened, and the blocking force is transmitted to the reel 4-1 and the brake disc 4-3 through the guide pulley 3. The friction brake 4-4 brakes to convert the energy into frictional heat energy and releases it.

[0029] Step 4: After the ship stops and is moored by the cable, when the ship's sailor detaches the blocking cable 6 from the mooring bitt, the reel 4-1 works, and at the same time the friction brake 4-4 stops working. The reel 4-1 rotates reversely to retract the brake belt 2 to the initial position.

Claims

1. A friction-absorbing active arresting protection device for ships passing through locks, characterized in that: The system includes a robotic arm (1), a guide pulley (3), and a friction energy absorption device (4) installed sequentially from upstream to downstream on both sides of the lock chamber. The robotic arm (1) grabs the brake band (2) and attaches it to the ship's mooring bollard. The brake band (2) passes through the guide pulley (3) and is installed on the friction energy absorption device (4). The friction energy absorption device (4) retracts, releases, and brakes the brake band (2).

2. The friction-absorbing active arresting protection device for ships passing through locks according to claim 1, characterized in that: The brake band (2) is connected to the arresting cable (6) via a plain band connector (5).

3. The friction-absorbing active arresting protection device for ships passing through locks according to claim 1, characterized in that: The friction energy absorption device (4) consists of a reel (4-1), a brake disc (4-3), and a friction brake (4-4); wherein, the reel (4-1) is driven by a drive device (4-2) to wind up and release the brake band (2); the brake disc (4-3) is arranged on both sides of the reel (4-1) and is coaxial with the reel (4-1); the friction brake (4-4) is distributed on one side of the brake disc (4-3) and applies friction braking to the brake disc (4-3).

4. The friction-absorbing active arresting protection device for ships passing through locks according to claim 1, characterized in that: A radar speed measuring instrument (7) is installed on the downstream gate of the gate chamber.

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