Fixed ramp structure form of automobile transport ship
By abolishing the ramp beams aligned with the vertical pillars in the fixed ramp structure of the car transport ship and setting fixed ramp beams in front and rear of it, the fatigue strength problem at the intersection of the fixed ramp and the vertical pillars is solved, and the safety of the ship is improved.
Patent Information
- Application Number
- CN202421508731.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The existing fixed ramp structure of automobile transport ships has severe stress concentration at the intersection of vertical pillars and ramp beams, resulting in insufficient fatigue strength and prone to fatigue damage.
The ramp beam that is aligned with the vertical pillar is cancelled, and the first fixed ramp beam and the second fixed ramp beam are respectively arranged in front and behind the vertical pillar, both fixed on the lower surface of the fixed ramp.
Improves the fatigue strength of the fixed ramp, enhances the safety of the ship, and avoids stress concentration and fatigue damage at the intersection of vertical pillars and ramp beams.
Smart Images
Figure CN222611347U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ships, in particular to a fixed ramp structure for a car transport ship. Background Art
[0002] Car carriers are mainly used to transport large and small cars. In order to facilitate the loading and unloading of vehicles, car carriers usually have fixed ramps in the cargo hold for the passage of vehicles between the two decks.
[0003] In order to support the fixed ramp, vertical struts are provided on both sides of the fixed ramp. As part of the hull structure, the fixed ramp bears the vertical and lateral loads transmitted from the vehicle deck during the ship's rolling motion. In the connection area between the vertical struts and the fixed ramp, the fixed ramp has obvious stress concentration. The high stress area is prone to fatigue failure. Similar failures have occurred on actual ships.
[0004] The existing fixed ramp layout adopts a structural form of vertical pillars and fixed ramp beams. The vertical pillars and ramp beams are strong structures. Under the dual effects of vertical and lateral loads, there is a large stress concentration at the intersection of the vertical pillars and the ramp beams. The stress concentration is very obvious, and the fatigue strength nearby is difficult to meet the requirements. Under the action of lateral alternating loads, fatigue damage is very likely to occur. Utility Model Content
[0005] The technical problem to be solved by the utility model is to overcome the above-mentioned defects in the prior art and provide a fixed ramp structure for a car transport ship.
[0006] The utility model solves the above technical problems through the following technical solutions:
[0007] A fixed ramp structure for a car transport ship comprises a fixed ramp arranged between two vehicle decks; vertical pillars are arranged on both sides of the fixed ramp; the lower surface of the fixed ramp is not provided with a ramp beam aligned with the two vertical pillars; the intersection line of the surface formed by the theoretical lines of the two vertical pillars and the fixed ramp is the line between the theoretical lines of the two vertical pillars; a first fixed ramp beam and a second fixed ramp beam are respectively arranged in front of and behind the line between the theoretical lines of the two vertical pillars; the first fixed ramp beam and the second fixed ramp beam are both fixedly arranged on the lower surface of the fixed ramp.
[0008] Furthermore, the distance between the first fixed ramp crossbeam and the connecting line between the two vertical support theoretical lines is 300-1000 mm.
[0009] Furthermore, the distance between the second fixed ramp crossbeam and the connecting line between the two vertical support theoretical lines is 300-1000 mm.
[0010] Furthermore, the first fixed ramp cross beam and the second fixed ramp cross beam are symmetrically distributed on both sides of a line between two vertical support theoretical lines.
[0011] Further, the first fixed ramp beam is parallel to the second fixed ramp beam.
[0012] Further, the height of the first fixed ramp crossbeam below the fixed ramp is equal to the height of the second fixed ramp crossbeam below the fixed ramp.
[0013] Furthermore, the cross section of the first fixed ramp beam is T-shaped or L-shaped.
[0014] Furthermore, the cross section of the second fixed ramp beam is T-shaped or L-shaped.
[0015] Further, the width of the first fixed ramp crossbeam is the same as the width of the fixed ramp.
[0016] Further, the width of the second fixed ramp crossbeam is the same as the width of the fixed ramp.
[0017] The beneficial effects of the utility model are as follows: the fixed ramp structure of the utility model eliminates the ramp beam aligned with the vertical support, and respectively arranges the first fixed ramp beam and the second fixed ramp beam in front of and behind the vertical support, thereby solving the fatigue strength problem at the intersection of the fixed ramp and the vertical support. The fixed ramp structure of the utility model improves the fatigue strength of the fixed ramp and enhances the safety of the ship. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a top view of a preferred embodiment of the utility model.
[0019] Figure 2 for Figure 1 AA cross-sectional view. DETAILED DESCRIPTION
[0020] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.
[0021] like Figure 1 and Figure 2 As shown, a fixed ramp structure of a car transport ship includes a fixed ramp 10 arranged between two vehicle decks; vertical pillars 20 are arranged on both sides of the fixed ramp 10.
[0022] The lower surface of the fixed ramp 10 is not provided with a ramp crossbeam aligned with the two vertical supports.
[0023] The intersection line of the surface formed by the two vertical support theoretical lines and the fixed ramp is the connecting line 21 between the two vertical support theoretical lines. Those skilled in the art are aware that the vertical support theoretical line refers to the vertical line representing the vertical support on the drawing, and the two vertical support theoretical lines are parallel to each other; the surface formed by the two vertical support theoretical lines intersects with the fixed ramp.
[0024] The line 21 between the two vertical support theoretical lines can also be expressed as a line between the two vertical support theoretical lines on the fixed ramp. The line between the two vertical support theoretical lines and the line between the two vertical support theoretical lines on the fixed ramp express the same line.
[0025] A first fixed ramp cross beam 11 and a second fixed ramp cross beam 12 are respectively arranged in front of and behind a line 21 between theoretical lines of two vertical struts.
[0026] The first fixed ramp cross beam 11 and the second fixed ramp cross beam 12 are both fixedly disposed on the lower surface of the fixed ramp 10 .
[0027] The distance S1 between the first fixed ramp cross beam 11 and the connecting line 21 between the two vertical support theoretical lines is 300-1000 mm.
[0028] The distance S2 between the second fixed ramp cross beam 12 and the connecting line 21 between the two vertical support theoretical lines is 300-1000 mm.
[0029] Among them, S1 is equal to S2, or S1 is not equal to S2.
[0030] In this embodiment, S1 is equal to S2. From a top view, the first fixed ramp beam 11 and the second fixed ramp beam 12 are symmetrically distributed on both sides of a line 21 between two vertical support theoretical lines; the first fixed ramp beam 11 is parallel to the second fixed ramp beam 12.
[0031] The height of the first fixed ramp cross beam 11 below the fixed ramp is equal to the height of the second fixed ramp cross beam 12 below the fixed ramp.
[0032] The cross-section of the first fixed ramp beam and the cross-section of the second fixed ramp beam may be in various forms.
[0033] The cross section of the first fixed ramp beam 11 is T-shaped or L-shaped; the cross section of the second fixed ramp beam 12 is T-shaped or L-shaped.
[0034] There are many combinations of the cross section of the first fixed ramp beam and the cross section of the second fixed ramp beam.
[0035] Combination mode 1: The cross section of the first fixed ramp cross beam is the same as the cross section of the second fixed ramp cross beam. For example, the cross section of the first fixed ramp cross beam and the cross section of the second fixed ramp cross beam are both T-shaped or L-shaped.
[0036] Combination mode 2, the cross section of the first fixed ramp beam is different from the cross section of the second fixed ramp beam. For example, the cross section of the first fixed ramp beam is T-shaped, and the cross section of the second fixed ramp beam is L-shaped; the cross section of the first fixed ramp beam is L-shaped, and the cross section of the second fixed ramp beam is L-shaped.
[0037] To ensure structural strength, the first fixed ramp beam and the second fixed ramp beam should have sufficient length. Preferably, the width of the first fixed ramp beam 11 is the same as the width of the fixed ramp 10 ; the width of the second fixed ramp beam 12 is the same as the width of the fixed ramp 10 .
[0038] It should be noted that Figure 1 In the figure, the line 21 between the theoretical lines of the two vertical struts is a virtual line and is therefore represented by a dotted line. Figure 1 In the figure, the first fixed ramp cross beam 11 and the second fixed ramp cross beam 12 are arranged on the lower surface of the fixed ramp 10, and are represented by solid lines in order to be distinguished from the connecting line 21 between the theoretical lines of the two vertical pillars.
[0039] The fixed ramp structure of the utility model eliminates the ramp beam aligned with the vertical support, and respectively arranges a first fixed ramp beam and a second fixed ramp beam in front of and behind the vertical support, thereby solving the fatigue strength problem at the intersection of the fixed ramp and the vertical support.
[0040] The fixed ramp structure of the utility model improves the fatigue strength of the fixed ramp and enhances the safety of the ship.
[0041] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.
Claims
1. A fixed ramp structure for a car transport ship, comprising a fixed ramp arranged between two vehicle decks; vertical supports are arranged on both sides of the fixed ramp; characterized in that: The lower surface of the fixed ramp is not provided with a ramp beam aligned with the two vertical pillars; the intersection of the surface formed by the theoretical lines of the two vertical pillars and the fixed ramp is the line between the theoretical lines of the two vertical pillars; the first fixed ramp beam and the second fixed ramp beam are respectively arranged in front of and behind the line between the theoretical lines of the two vertical pillars; the first fixed ramp beam and the second fixed ramp beam are both fixedly arranged on the lower surface of the fixed ramp.
2. The fixed ramp structure of the car transport ship according to claim 1 is characterized in that: The distance between the first fixed ramp crossbeam and the connecting line between the two vertical support theoretical lines is 300 to 1000 mm.
3. The fixed ramp structure of the car transport ship according to claim 1 is characterized in that: The distance between the second fixed ramp crossbeam and the connecting line between the two vertical support theoretical lines is 300 to 1000 mm.
4. The fixed ramp structure of the car carrier according to claim 1, characterized in that: The first fixed ramp cross beam and the second fixed ramp cross beam are symmetrically distributed on both sides of a line connecting two vertical support theoretical lines.
5. The fixed ramp structure of the car transport ship according to claim 1 is characterized in that: The first fixed ramp beam is parallel to the second fixed ramp beam.
6. The fixed ramp structure of the car transport ship according to claim 1 is characterized in that: The height of the first fixed ramp crossbeam below the fixed ramp is equal to the height of the second fixed ramp crossbeam below the fixed ramp.
7. The fixed ramp structure of the car carrier according to claim 1, characterized in that: The cross section of the first fixed ramp beam is T-shaped or L-shaped.
8. The fixed ramp structure of the car transport ship according to claim 1 is characterized in that: The cross section of the second fixed ramp beam is T-shaped or L-shaped.
9. The fixed ramp structure of the car transport ship according to claim 1, characterized in that: The width of the first fixed ramp crossbeam is the same as the width of the fixed ramp.
10. The fixed ramp structure of the car transport ship according to claim 1, characterized in that: The width of the second fixed ramp crossbeam is the same as the width of the fixed ramp.