High-voltage power supply pit for wharf

Abstract

The utility model discloses a wharf high-voltage power supply pit, which relates to the technical field of wharf high-voltage power supply and comprises a foundation pit, a cover plate arranged on the foundation pit, a guide device arranged on the lower surface of the cover plate, a high-voltage junction box arranged in the foundation pit, and a cable drum arranged on one side of the high-voltage junction box and used for winding a high-voltage cable. One terminal of the high-voltage junction box is connected with a buried high-voltage line through a first cable butt joint device, the other terminal of the high-voltage junction box is connected with a high-voltage cable through a second cable butt joint device, and the other terminal of the high-voltage cable penetrates through a guide device and a cover plate and is connected with a crane. The high-voltage junction box is connected to a shore high-voltage power supply system, and the high-voltage cable is butted with the high-voltage junction box, wound by the cable drum, guided by the guide device and finally connected to a port crane, so that high-voltage power transmission for the crane is realized, the construction and operation cost of a wharf shore connection box is reduced, and the electric shock risk and the fire risk are reduced; and the operation safety of personnel is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage power supply for docks, in particular to a high-voltage power supply pit for docks. Background Art

[0002] A bridge crane is a type of lifting equipment used to lift materials across workshops, warehouses, and material yards. Because its ends rest on tall concrete columns or metal supports, it resembles a bridge. The bridge crane's girder runs longitudinally along tracks laid on elevated platforms on both sides, while the hoist trolley runs transversely along the tracks laid on the girder, forming a rectangular working area. This allows the space beneath the girder to be fully utilized for lifting materials without being obstructed by ground equipment. It is the most widely used and most numerous type of lifting machinery. To achieve energy conservation and emission reduction, and to reduce operating and maintenance costs, ports have converted their bridge cranes from oil-driven to electric-driven. This power supply, powered by a power source, solves the problems of oil-driven cranes, such as loud noise, high fuel consumption, high exhaust emissions, and high operating and maintenance costs.

[0003] Bridge cranes are primarily electrically powered and typically operated from within the operator's cab. Due to limitations in early terminal design and construction, these cranes typically receive their high-voltage power from shore power boxes located on the dock surface. This high-voltage power supply increases terminal construction and operating costs. Furthermore, high-voltage power supply on the dock surface poses risks of electric shock and fire, and can even cause electric shock accidents during operation. Utility Model Content

[0004] In order to overcome the defects of high cost and high risk in the prior art, the utility model provides a dock high-voltage power supply pit.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a high-voltage power supply pit at a wharf, including a foundation pit, a cover plate is provided on the foundation pit, a guide device is provided on the lower surface of the cover plate, a high-voltage junction box is provided in the foundation pit, a cable reel for winding high-voltage cables is provided on one side of the high-voltage junction box, one terminal of the high-voltage junction box is connected to the buried high-voltage line through a first cable docking device, the other terminal of the high-voltage junction box is connected to the high-voltage cable through a second cable docking device, and the other end of the high-voltage cable passes through the guide device and the cover plate and is connected to the crane.

[0006] As a further improvement of the present invention, a junction box bracket is provided at the lower portion of the high-voltage junction box.

[0007] As a further improvement of the present invention, the inner side and bottom of the foundation pit are both provided with a waterproof reinforcement layer.

[0008] As a further improvement of the present invention, a settlement pipe is provided at the inner bottom of the foundation pit.

[0009] As a further improvement of the present invention, a manhole plate is provided on the cover plate.

[0010] As a further improvement of the present invention, a handle is provided on the cover plate.

[0011] Compared with the existing technology, the utility model has the following beneficial effects: in this solution, a high-voltage junction box is arranged in the foundation pit, the high-voltage junction box is connected to the high-voltage power supply system on the shore, the high-voltage cable is connected to the high-voltage junction box, and at the same time is wound through the cable reel, and then guided by the guide device, and finally connected to the port crane to realize high-voltage power supply to the crane. The high-voltage power supply pit transmits the high-voltage power to the high-voltage junction box in the foundation pit by connecting to the high-voltage power supply system on the shore. The high-voltage junction box transmits the high-voltage power to the port lifting equipment through the high-voltage cable, reducing the construction and operation costs of the terminal shore power box, reducing the risk of electric shock and fire, and improving the safety of personnel operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a main view of a high-voltage power supply pit at a dock according to the utility model.

[0014] In the figure: 1. Foundation pit; 2. High-voltage junction box; 3. Cable reel; 4. Junction box bracket; 5. High-voltage cable; 6. Cover plate; 7. Guide device; 8. First cable docking device; 9. Second cable docking device; 10. Settlement pipe; 11. Handle. DETAILED DESCRIPTION

[0015] In order to make the technical solution and beneficial effects of the present invention more clearly understood, the present invention will be further described in detail below with reference to specific embodiments.

[0016] Reference Figure 1 The present invention discloses a high-voltage power supply pit for a dock, comprising a foundation pit 1, a cover plate 6, and a guide device 7 on the lower surface of the cover plate 6. A high-voltage junction box 2 is located within the foundation pit 1, and a cable reel 3 for winding a high-voltage cable 5 is located on one side of the high-voltage junction box 2. One terminal of the high-voltage junction box 2 is connected to an underground high-voltage line via a first cable docking device 8, and the other end of the high-voltage junction box 2 is connected to the high-voltage cable 5 via a second cable docking device 9. The cable docking device can connect the two cables. The other terminal of the high-voltage cable 5 passes through the guide device 7 and the cover plate 6 and is connected to a crane.

[0017] A junction box bracket 4 is provided at the lower portion of the high-voltage junction box 2 . The junction box bracket 4 is used to support the high-voltage junction box 2 and plays a role in protecting it from moisture.

[0018] The cover plate 6 is provided with a handle 11 and a manhole plate, through which the staff can enter the inside of the foundation pit 1 for easy detection and maintenance. Several handles 11 are evenly distributed around the cover plate 6 for the convenience of the staff in lifting and moving.

[0019] A high-voltage junction box 2 is located within the foundation pit 1 and connected to the high-voltage power supply system on shore. A high-voltage cable 5 is docked with the high-voltage junction box 2, wound on a cable reel 3, and then guided by a guide 7 before being connected to the port crane, delivering high-voltage power to the crane. The high-voltage power supply pit, connected to the high-voltage power supply system on shore, transmits high-voltage power to the high-voltage junction box 2 within the foundation pit 1. The high-voltage junction box 2 then transmits high-voltage power to the port's lifting equipment via high-voltage cables 5, reducing the construction and operating costs of shore power boxes, lowering the risk of electric shock and fire, and improving operator safety. The cover 6 and guide 7 are made of 304 material. The guide 7 is shaped like a flared horn to facilitate the movement of the high-voltage cable with the crane.

[0020] The inner side and bottom of foundation pit 1 are both provided with a waterproof reinforcement layer. A settling pipe 10 is located at the inner bottom of foundation pit 1. This pipe collects and collects water within the pit. This pipe guides the accumulated water deeper into the ground, improving the stability and waterproofing of pit 1 and facilitating its use.

[0021] The reel is made of 5mm304 stainless steel plate. There is a clamp on the reel to fix the cable. The cable needs to be wound around the reel at least 1 and a half turns. The nut of the clamp must be fixed to facilitate installation and prevent it from falling.

[0022] It should be understood that the specific embodiments described herein are only used to understand the present invention and are not used to limit the present invention. All other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present invention.

Claims

1. A high-voltage power supply pit at a dock, characterized by: The invention comprises a foundation pit (1), a cover plate (6) is provided on the foundation pit (1), a guide device (7) is provided on the lower surface of the cover plate (6), a high-voltage junction box (2) is provided in the foundation pit (1), a cable reel (3) for winding a high-voltage cable (5) is provided on one side of the high-voltage junction box (2), one terminal of the high-voltage junction box (2) is connected to an underground high-voltage line through a first cable docking device (8), the other terminal of the high-voltage junction box (2) is connected to the high-voltage cable (5) through a second cable docking device (9), and the other end of the high-voltage cable (5) passes through the guide device (7) and the cover plate (6) and is connected to a crane.

2. The high-voltage power supply pit at a wharf according to claim 1, characterized in that: A junction box bracket (4) is provided at the lower part of the high-voltage junction box (2).

3. The high-voltage power supply pit at a dock according to claim 2, characterized in that: The inner side and bottom of the foundation pit (1) are both provided with waterproof reinforcement layers.

4. The high-voltage power supply pit at a wharf according to claim 3, characterized in that: A sedimentation pipe (10) is provided at the inner bottom of the foundation pit (1).

5. The high-voltage power supply pit at a dock according to claim 4, characterized in that: A manhole plate is provided on the cover plate (6).

6. The high-voltage power supply pit at a dock according to claim 5, characterized in that: A handle (11) is provided on the cover plate (6).

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