Bridge structure and method suitable for air cushion vehicle walking

Abstract

The application relates to a bridge crossing structure and method suitable for air cushion vehicle walking, and belongs to the technical field of large transformer transportation equipment. The technical scheme is as follows: a first movable bridge deck (3) and a second movable bridge deck (4) are both right-angled trapezoids or right-angled triangles, the first movable bridge deck (3) and the second movable bridge deck (4) are combined to form a rectangular bridge deck, the rectangular bridge deck is provided with sealing materials (8) on two long sides, the rectangular bridge deck is arranged on a movable support (6), the movable support (6) is rotatably connected to a fixed support (5) through pin shafts (7) at two ends, the fixed support (5) is fixed on a ground base, a first hydraulic cylinder (1) is drivingly connected to the movable support (6), and a second hydraulic cylinder (2) is drivingly connected to the first movable bridge deck (3). The application has the beneficial effect that the contact surfaces on both sides of the bridge deck are sealed in air tightness by the sealing materials.

Description

Technical Field

[0001] This invention relates to a bridge structure and method suitable for air cushion vehicles, belonging to the technical field of large transformer transportation equipment. Background Technology

[0002] Air cushion vehicles require compressed air to operate, utilizing the factory's internal compressed air system. When the air cushion transport vehicle is inflated, the air bladder expands to form a ring. Air enters the air chamber through small holes in the air bladder, establishing pressure within the chamber and then releasing air outwards to form a very thin air film with the ground. Due to the low frictional resistance of the air film, heavy objects can be propelled, rotated, and positioned in any direction with minimal thrust. Because the air cushion device operates without any friction with the ground and does not pollute the environment, it is widely used in pharmaceutical, chemical, and other production plants where environmental requirements are high for moving, installing, and maintaining process equipment.

[0003] Air cushions can provide shock absorption during transport, but their biggest drawback is their reliance on specific ground conditions, especially crevices. While narrow gaps can be addressed with tape, they are ineffective on large, uneven concrete surfaces. Furthermore, their overall efficiency is not particularly high. Therefore, air cushions are a good product, but their suitability for the intended use and environment must be considered when selecting one.

[0004] The production of large transformers requires drying the transformer body and coils. Transporting these hundreds of tons of transformer body or coils necessitates the use of air cushion vehicles to move them in and out of the drying oven. However, the requirements for using air cushion vehicles are quite stringent. If the gap in the ground or bridge surface exceeds 2 millimeters, it directly affects the movement of the air cushion vehicle, making it impossible to transport transformers using air cushion vehicles. Summary of the Invention

[0005] The purpose of this invention is to provide a bridge structure and method suitable for air cushion vehicles, ensuring that the contact surfaces on both sides of the bridge deck are airtightly sealed with sealing materials, thus solving the problems existing in the background art.

[0006] The technical solution of this invention is:

[0007] A bridge structure suitable for air cushion vehicles includes a first hydraulic cylinder, a second hydraulic cylinder, a first movable bridge surface, a second movable bridge surface, a fixed support, a movable support, pins, and sealing material. The first and second movable bridge surfaces are both right-angled trapezoids or right-angled triangles. The first and second movable bridge surfaces are combined to form a rectangular bridge surface. Sealing material is provided on the two long sides of the rectangular bridge surface. The rectangular bridge surface is set on the movable support. The two ends of the movable support are rotatably connected to the fixed support through pins. The fixed support is fixed to the ground foundation. The first hydraulic cylinder is driven by the movable support, and the second hydraulic cylinder is driven by the first movable bridge surface.

[0008] The movable support is a rectangle that fits the rectangular bridge deck, and the two short sides of the movable support are rotatably connected to the fixed support by pins.

[0009] The movable support is positioned relative to the first and second movable bridge decks via positioning pins.

[0010] The movable support is provided with a pin hole 1 that mates with the positioning pin on the first movable bridge surface. The pin hole 1 is an elongated strip along the length direction of the movable support. The movable support is provided with a pin hole 2 that mates with the positioning pin on the second movable bridge surface. The pin hole 2 is an elongated strip along the width direction of the movable support.

[0011] Both the No. 1 and No. 2 movable bridge decks are provided with circular pin holes. The circular pin hole on the No. 1 movable bridge deck is matched with pin hole one on the movable support, and the circular pin hole on the No. 2 movable bridge deck is matched with pin hole two on the movable support.

[0012] The sealing material is polytetrafluoroethylene.

[0013] A bridge crossing method suitable for air cushion vehicles is provided, which adopts the bridge crossing structure specified above. When the air cushion vehicle travels on the bridge surface, the No. 2 hydraulic cylinder drives the No. 1 movable bridge surface to squeeze the No. 2 movable bridge surface, thereby ensuring the sealing performance of the sealing materials on both sides of the rectangular bridge surface.

[0014] The beneficial effects of this invention are: the main hydraulic system is used to open and close the entire bridge deck, and the auxiliary hydraulic system is used to squeeze the bridge deck, ensuring that the distance and pressure with the roadside or riverbank are adjustable, and the contact surface of the bridge deck is sealed with airtight material. Attached Figure Description

[0015] Figure 1 This is a top view of the present invention;

[0016] Figure 2 This is a side view of the present invention;

[0017] Figure 3 This is a front view of the present invention;

[0018] Figure 4 This is a perspective view of the present invention;

[0019] Figure 5 This is a schematic diagram of the invention;

[0020] In the diagram: Hydraulic cylinder 1, hydraulic cylinder 2, movable bridge 1, movable bridge 2, fixed support, movable support, pin, sealing material, locating pin. Detailed Implementation

[0021] The invention will be further described below with reference to the accompanying drawings and examples.

[0022] See attached document Figure 1-4 A bridge structure suitable for air cushion vehicles includes a first hydraulic cylinder 1, a second hydraulic cylinder 2, a first movable bridge surface 3, a second movable bridge surface 4, a fixed support 5, a movable support 6, a pin 7, and sealing material 8. The first movable bridge surface 3 and the second movable bridge surface 4 are both right-angled trapezoids or right-angled triangles. The first movable bridge surface 3 and the second movable bridge surface 4 are combined to form a rectangular bridge surface. Sealing material 8 is provided on the two long sides of the rectangular bridge surface. The rectangular bridge surface is set on the movable support 6. The two ends of the movable support 6 are rotatably connected to the fixed support 5 through the pin 7. The fixed support 5 is fixed to the ground foundation. The first hydraulic cylinder 1 is driven to the movable support 6, and the second hydraulic cylinder 2 is driven to the first movable bridge surface 3.

[0023] In this example, refer to the appendix. Figure 1-3 The length of the rectangular bridge deck is greater than the width of the air cushion vehicle. The sealing material 8 is polytetrafluoroethylene (PTFE). The movable support 6 is a rectangle that matches the rectangular bridge deck. The two short sides of the movable support 6 are rotatably connected to the fixed support 5 via pins 7. The movable support 6 has a first pin hole that matches the positioning pin 9 on the first movable bridge deck 3. The first pin hole is an elongated strip along the length of the movable support 6. The movable support 6 also has a second pin hole that matches the positioning pin 9 on the second movable bridge deck 4. The second pin hole is an elongated strip along the width of the movable support 6. Both the first movable bridge deck 3 and the second movable bridge deck 4 have circular pin holes. The circular pin hole on the first movable bridge deck 3 matches the first pin hole on the movable support 6, and the circular pin hole on the second movable bridge deck 4 matches the second pin hole on the movable support 6.

[0024] See attached document Figure 5 Instructions for use: Hydraulic cylinder 1 is the lifting cylinder, enabling the opening and closing of the entire bridge deck. The forward and backward movement of hydraulic cylinder 2 drives movable bridge deck 3 to move forward and backward in the direction of its arrow, thereby pushing movable bridge deck 4 left and right to compress it. This ensures the sealing of the left and right sealing materials of the bridge deck, solving the problem of airtightness between the bridge deck and the roadside or riverbank, ensuring the movement of the air cushion vehicle. This structure also better addresses the changes in the left and right distance of the bridge deck caused by temperature variations.

Claims

1. A bridge structure suitable for air cushion vehicles, characterized in that: It includes a first hydraulic cylinder (1), a second hydraulic cylinder (2), a first movable bridge surface (3), a second movable bridge surface (4), a fixed support (5), a movable support (6), a pin (7), and sealing material (8). The first movable bridge surface (3) and the second movable bridge surface (4) are both right trapezoids or right triangles. The first movable bridge surface (3) and the second movable bridge surface (4) are combined to form a rectangular bridge surface. Sealing material (8) is provided on the two long sides of the rectangular bridge surface. The rectangular bridge surface is set on the movable support (6). The two ends of the movable support (6) are rotatably connected to the fixed support (5) through the pin (7). The fixed support (5) is fixed. Based on the ground, hydraulic cylinder 1 (1) is driven to connect with movable support (6), and hydraulic cylinder 2 (2) is driven to connect with movable bridge deck 3 (3). Movable support (6) is positioned with movable bridge deck 3 (3) and movable bridge deck 4 (4) by positioning pin (9). Movable support (6) is provided with pin hole 1 that cooperates with positioning pin (9) on movable bridge deck 3 (3). Pin hole 1 is a long strip along the length of movable support (6). Movable support (6) is provided with pin hole 2 that cooperates with positioning pin (9) on movable bridge deck 4 (4). Pin hole 2 is a long strip along the width of movable support (6).

2. The bridge structure suitable for air cushion vehicle travel according to claim 1, characterized in that: The movable support (6) is a rectangle that matches the rectangular bridge deck. The two short sides of the movable support (6) are rotatably connected to the fixed support (5) by pins (7).

3. The bridge structure suitable for air cushion vehicle travel according to claim 1, characterized in that: Both the No. 1 movable bridge deck (3) and the No. 2 movable bridge deck (4) are provided with circular pin holes. The circular pin hole on the No. 1 movable bridge deck (3) is in vertical alignment with the pin hole one on the movable support (6), and the circular pin hole on the No. 2 movable bridge deck (4) is in vertical alignment with the pin hole two on the movable support (6).

4. A bridge structure suitable for air cushion vehicle travel according to claim 1 or 2, characterized in that: The sealing material (8) is polytetrafluoroethylene.

5. A method for crossing bridges suitable for air cushion vehicles, characterized in that: Using any one of claims 1-4, a bridge structure suitable for air cushion vehicle travel is adopted. When the air cushion vehicle travels on the bridge surface, the second hydraulic cylinder (2) drives the first movable bridge surface (3) to squeeze the second movable bridge surface (4), thereby ensuring the sealing performance of the sealing materials on both sides of the rectangular bridge surface.

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