Electric shore-based movable cable winch

Abstract

The utility model discloses an electric shore-based movable cable winch, which relates to the technical field of ship-shore connection systems and comprises a container power transformation and distribution system arranged on an electric platform trailer. The container power transformation and distribution system comprises a cable winch, a high-voltage wire inlet cabinet, a high-voltage wire outlet cabinet, a control cabinet, a low-voltage switch cabinet, an embedded socket box, a step-down transformer and an air conditioner. The high-voltage cable management system is placed in the container, then the side face, where the high-voltage cable management system is located, of the container can be opened, and when a shore-side high-voltage socket box needs to be connected, the left side door of the container is opened, and a cable plug is inserted into a connecting plug of the high-voltage socket box; and when the side-by-side door on the left side of the container is closed without input wiring operation, a waterproof sealing strip is arranged on the edge of the door to prevent rainwater from entering from a movable gap. The door opening structure is a folding hinged door with an upper sliding rail and a lower sliding rail, and does not occupy too large space after being opened. And the purposes of better rain prevention, moisture prevention and insulation are achieved.

Description

Technical Field

[0001] This utility model relates to the field of ship-shore connection system technology, and in particular to an electric shore-based mobile cable winch. Background Technology

[0002] To address fuel pollution at port terminals, my country has been vigorously developing shore power in recent years. However, due to varying conditions and construction progress across ports, the following technical issues frequently arise during the actual use of shore power: 1. Many terminals are currently only equipped with high-voltage socket boxes, providing high-voltage power transmission to ships but lacking low-voltage power transmission capabilities. 2. The vessels actually berth vary in type, some high-voltage and some low-voltage, with different specifications and quantities of cable transmission adapters. Some even lack adapters, often preventing connection to the terminal's power supply equipment. 3. The berthing locations of vessels are frequently variable, and the connecting cable length may be insufficient.

[0003] In the ship-to-shore connection system, shore power plugs and sockets are standardized, divided into two main categories: high voltage and low voltage. Commonly used high voltage plugs and sockets have a rated voltage of 6.6kV and a rated current of 350A, and a rated voltage of 12kV and a rated current of 500A. Commonly used low voltage plugs and sockets have a rated voltage of 450V and a rated current of 350A. Plugs and sockets of the same voltage and rated current are compatible. Plugs and sockets of different voltages cannot be connected, and plugs and sockets of the same voltage but different models cannot be connected because their shape, structure, and size are incompatible.

[0004] In my country, the initial approach was to mandate shore power upgrades for port operators. In northern ports, for example, only one 6.6kV, 350A power socket was typically installed. Considering my country's specific circumstances (most vessels along the upper reaches of the Yangtze River are small boats), Chinese shore power experts, when developing shore power connector standards, not only adopted the internationally accepted 450V / 350A low-voltage plugs and sockets but also added a 250A category. Different ships are equipped with different models and quantities of power receiving plugs, creating connection challenges for the shore side.

[0005] The electric shore-based mobile cable winch is a cable management device used in ship-to-shore power supply systems. Installed on the dock, it provides a flexible and convenient cable connection solution for berthing vessels. This mobile container-type high-to-low transfer trolley is used at the dockfront and is stationary near the railing to extend the ship-to-shore connection cable.

[0006] The electric shore-based mobile cable winch operates above ground level at the quayhead. The mobile container-type high-to-low trolley has a built-in socket that can connect to the cable with plug on the ship, and the other end connects to the shore power box on the shore. The mobile container-type high-to-low trolley can be remotely moved to a designated location according to the work position requirements. It is designed to meet outdoor working conditions and can adapt to the humid and harsh working environment of the quay.

[0007] The patent with publication number CN220809787U discloses a self-moving transformer shore power connection system. The cable management system of this device is placed outside the container, and its ability to prevent rain, moisture and insulation is weak. Since the transformer and distribution cabinet system inside the container of this device only contains transformers and related distribution switch cabinets, and transformers cannot change the frequency, we propose an electric shore-based mobile cable winch. Summary of the Invention

[0008] The purpose of this invention is to provide an electric shore-based mobile cable winch that solves the technical problem that low-voltage ships cannot connect to high-voltage shore power after berthing.

[0009] To achieve the above objectives, this utility model provides the following solution:

[0010] This utility model provides an electric shore-based mobile cable winch, including a container power distribution system and an electric flatbed trailer; the container power distribution system is installed on the electric flatbed trailer; the container power distribution system includes a cable winch, a high-voltage incoming cabinet, a high-voltage outgoing cabinet, a control cabinet, a low-voltage switch cabinet, an embedded socket box, a step-down transformer, and an air conditioner.

[0011] Optionally, the container power distribution system is located inside the container, and the container is mounted on the electric flatbed trailer.

[0012] Optionally, the container is provided with a folding double door on one side.

[0013] Optionally, the edges of the folding double doors are provided with waterproof sealing strips.

[0014] Optionally, the top and bottom of the folding double doors are provided with slide rails between them and the container.

[0015] Optionally, the bottom of the container is provided with an anti-slip structure, which is used to stabilize the chassis of the electric flatbed trailer when parked and prevent the electric shore-based mobile cable winch from deviating.

[0016] Optionally, the containerized power distribution system may also include fire extinguishers.

[0017] Optionally, the cable winch includes a high-voltage cable plug, a control box, a variable frequency motor, and an AMP flexible reel cable; the high-voltage cable plug, the AMP flexible reel cable, and the variable frequency motor are electrically connected to the control box; the variable frequency motor is used to drive the AMP flexible reel cable.

[0018] Optionally, the air conditioner includes an indoor unit and an embedded outdoor unit.

[0019] Optionally, the embedded socket box is equipped with four 250A low-voltage shore power sockets and three 350A low-voltage shore power sockets.

[0020] The present invention achieves the following technical advantages over the prior art:

[0021] This utility model relates to an electric shore-based mobile cable winch, which is mounted on an electric flatbed trailer in the form of a complete containerized power distribution system. The electric flatbed trailer can move freely at the dock to meet the power supply needs of ships at various berths. The cable winch is built into the container, and the high-voltage cable management system is located on the side of the container, which has a door. When it is necessary to connect to the high-voltage socket box on the shore, the left door of the container is opened, and the cable plug is inserted into the connector of the high-voltage socket box. The left-side double doors of the container are equipped with waterproof sealing strips on the edges when closed without input wiring operations to prevent rainwater from entering through the gaps. The door structure is a folding double door with upper and lower sliding rails, which does not occupy much space when open. This greatly improves the rainproof, moisture-proof, and insulation capabilities of the entire system. The bottom of the container is equipped with an anti-slip structure to stabilize the electric flatbed trailer chassis when parked, preventing the electric shore-based mobile cable winch from shifting. Furthermore, this electric shore-based mobile cable winch can be equipped with various socket boxes: four 250A low-voltage shore power sockets and three 350A low-voltage shore power sockets. Theoretically, it can be configured with socket boxes to meet the various docking needs of existing low-voltage ships, and the entire device can be used to power the entire ship at one time. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a top view of the interior of the electric shore-based mobile cable winch of this utility model;

[0024] Figure 2 This is the internal front view of the electric shore-based mobile cable winch of this utility model;

[0025] Figure 3 This is a left-side view of the electric shore-based mobile cable winch of this utility model;

[0026] Figure 4 This is a perspective view of the container in this utility model;

[0027] Figure 5This is a right-side view of the electric shore-based mobile cable winch of this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 01. Containerized power distribution system; 02. Electric flatbed trailer;

[0030] 1. First fire extinguisher; 2. Cable winch; 3. High-voltage incoming cabinet; 4. High-voltage outgoing cabinet; 5. Air conditioner indoor unit; 6. Control cabinet; 7. Low-voltage switch cabinet; 8. Second fire extinguisher; 9. Embedded socket box; 10. Step-down transformer; 11. Embedded air conditioner outdoor unit; 12. Folding double door; 13. Anti-slip structure. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figures 1 to 5 As shown, this embodiment provides an electric shore-based mobile cable winch 2, which mainly includes a container power distribution system 01 installed on an electric flatbed trailer 02.

[0034] The containerized power distribution system 01 uses a standard 20-foot container. Inside, it houses a high-voltage incoming cabinet 3, a high-voltage outgoing cabinet 4, a control cabinet 6 (i.e., a PLC control cabinet), a step-down transformer 10 (for isolation and voltage reduction), a low-voltage (switch) cabinet, a cable winch 2, and an embedded socket box 9 (low-voltage). The overall container design includes an indoor air conditioning unit 5 and an embedded outdoor air conditioning unit 11, a first fire extinguisher 1, and a second fire extinguisher 8, demonstrating high integration and facilitating on-site transportation and relocation. During normal use, the container doors open from the left side for wiring input.

[0035] When the left-side double doors of the container are closed without any input wiring operations, the door edges are equipped with waterproof sealing strips to prevent rainwater from entering through the gaps. The door structure is a folding double door 12, which does not take up much space when opened.

[0036] The bottom of the container is equipped with an anti-slip structure 13, which stabilizes the chassis of the electric flatbed trailer 02 when parked, preventing the electric shore-based mobile cable winch 2 from shifting. In this specific embodiment, the anti-slip structure 13 includes anti-slip pads or anti-slip patterns on the part of the container bottom that contacts the electric flatbed trailer 02, to increase the friction between the two and prevent slippage during transportation, thereby stabilizing the chassis of the electric flatbed trailer. Furthermore, anti-slip patterns are also provided at the four corners of the container to further enhance the stability of the container on the electric flatbed trailer 02.

[0037] The cable winch 2 mainly includes a high-voltage cable plug, a control box, a variable frequency motor, and an AMP flexible reel cable. Its function is to connect to the high-voltage shore power socket box on the dock and introduce the 6.6kV / 6kV high-voltage power from the high-voltage shore power socket box into the high-voltage incoming cabinet 3 and high-voltage outgoing cabinet 4 of the container power distribution system 01.

[0038] The high-voltage incoming cabinet 3 and the high-voltage outgoing cabinet 4 are used to disconnect and connect the 6.6kV / 6kV high-voltage power brought in by the cable winch 2.

[0039] The function of control cabinet 6 (i.e. PLC control cabinet) is to execute the opening and closing control logic and protection action logic of each high and low voltage switch cabinet 7.

[0040] The function of step-down transformer 10 is to reduce the 6.6kV / 6kV high-voltage power output from high-voltage outgoing cabinet 4 to a low voltage of 450V / 400V.

[0041] The function of a low-voltage (switch) cabinet is to disconnect and connect the 450V / 400V low-voltage electrical energy input into the low-voltage (switch) cabinet after the transformer has stepped down the voltage.

[0042] The function of the recessed socket box 9 (low voltage) is to connect the low voltage cables with cable plugs that are delivered from ships docked at the port.

[0043] The electric flatbed trailer 02 can be moved by electric power (powered by 2 sets of 400AH / 48V lithium batteries) or by dock forklifts or other towing vehicles, and its size meets the requirements for placing shore power containers.

[0044] The working principle (process) and connection relationship of each component of the electric shore-based mobile cable winch 2 in this utility model are as follows:

[0045] Step 1: During use, first open the folding double door 12 on the left side of the container, and plug the cable plug that was sent down from the ship that is docked into the corresponding capacity socket of the recessed socket box 9 (low voltage).

[0046] Step 2: The high-voltage input power of this device is taken from the 6.6kV / 6kV high-voltage socket box fixedly installed at the front of the wharf. The high-voltage cable plug of the cable winch 2 is quickly connected to the socket on the high-voltage socket box. The 6.6kV / 6kV high-voltage power is introduced into the input terminal of the high-voltage incoming line cabinet 3. The output terminal of the high-voltage circuit breaker of the high-voltage incoming line cabinet 3 is connected to the input terminal of the high-voltage circuit breaker of the high-voltage outgoing line cabinet 4 using copper busbars. The output terminal of the high-voltage circuit breaker of the high-voltage outgoing line cabinet 4 is connected to the primary side of the step-down transformer 10 using copper busbars.

[0047] Step 3: Close the high-voltage incoming cabinet 3 and the high-voltage outgoing cabinet 4 in sequence. At this point, 6.6kV / 6kV high-voltage power is transmitted to the primary side of the step-down transformer 10. If the input voltage is 6.6kV at this time, the secondary side of the step-down transformer 10 will output 450V low-voltage power; if the input voltage is 6kV at this time, the secondary side of the step-down transformer 10 will output 400V low-voltage power.

[0048] Step 4: The input terminal of the low-voltage circuit breaker in the low-voltage (switch) cabinet is connected to the secondary side of the step-down transformer 10 using copper busbars. The output terminal of the low-voltage circuit breaker in the low-voltage (switch) cabinet is connected to the socket of the embedded socket box 9 (low-voltage) using copper busbars. After 450V / 400V low-voltage power is delivered to the input terminal of the low-voltage circuit breaker, the low-voltage circuit breaker in the low-voltage (switch) cabinet is closed. The 450V / 400V low-voltage power is output through the output copper busbar of the low-voltage circuit breaker, and then transmitted to the embedded socket box 9 (low-voltage) via the connecting copper busbar between the output copper busbar of the low-voltage circuit breaker and the embedded socket box 9 (low-voltage). Since the cable plugs from ships docked at the port have already been inserted into the corresponding capacity sockets in the embedded socket box 9 (low-voltage), the 450V / 400V low-voltage power can be successfully delivered to the ship.

[0049] It is worth noting that, for safety reasons, in the control logic of control cabinet 6 (i.e. PLC control cabinet 6), if the cable plugs brought down from the ship docking at the port are not plugged into the corresponding capacity (current size) socket of the embedded socket box 9 (low voltage) in the first step, the circuit breaker of the low voltage (switch) cabinet in the final fourth step will not meet the closing conditions and will not be able to close.

[0050] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0051] This specification uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An electrically powered shore-based mobile cable winch, characterized in that, The container power distribution system and the electric flat trailer; the container power distribution system is arranged on the electric flat trailer; the container power distribution system comprises a cable winch, a high-voltage incoming line cabinet, a high-voltage outgoing line cabinet, a control cabinet, a low-voltage switch cabinet, an embedded socket box, a step-down transformer and an air conditioner; the container power distribution system is arranged in a container, one side of the container is provided with a folding double-leaf door; the container is arranged on the electric flat trailer; the bottom of the container is provided with an anti-skid structure for stabilizing the chassis of the electric flat trailer when parked and preventing the electric shore-based mobile cable winch from deviating.

2. The electrically powered shore-based mobile cable winch of claim 1, wherein, The edge of the folding double-leaf door is provided with a waterproof sealing strip.

3. The electrically powered shore-based mobile cable winch of claim 1, wherein, The top and bottom of the folding double-leaf door are provided with sliding rails between the folding double-leaf door and the container.

4. The electrically powered shore-based mobile cable winch of claim 1, wherein, The container power distribution system further comprises a fire extinguisher.

5. The electrically powered shore-based mobile cable winch of claim 1, wherein, The cable winch comprises a high-voltage cable plug, a control box, a variable frequency motor and an AMP flexible drum cable; The high-voltage cable plug, the AMP flexible drum cable and the variable frequency motor are respectively electrically connected with the control box; the variable frequency motor is used to drive the AMP flexible drum cable.

6. The electrically powered shore-based mobile cable winch of claim 1, wherein, The air conditioner comprises an air conditioner indoor unit and an embedded air conditioner outdoor unit.

7. The electrically powered shore-based mobile cable winch of claim 1, wherein, The embedded socket box is provided with four 250A low-voltage shore power sockets and three 350A low-voltage shore power sockets.

Images