Supporting column end connecting structure of automobile transport ship

Abstract

The utility model discloses a strut end connecting structure of an automobile transport ship, which is characterized by comprising a lower strut, the top end of which is connected with the joint of a transverse girder and a longitudinal girder; the two lower anti-fatigue toggle plates are distributed on the two sides of the lower supporting column in the direction of the transverse girder; the vertical edge of the lower anti-fatigue toggle plate is connected with the longitudinal side face of the lower supporting column, and the top edge is connected with the bottom of the transverse girder. The deck is arranged above the transverse girders and the longitudinal girders; the upper supporting column is located over the lower supporting column, and the bottom end of the upper supporting column is connected with the deck; two upper anti-fatigue toggle plates arranged along the longitudinal girders are arranged between the two transverse side faces of the longitudinal girders and the deck. The vertical edge of the upper anti-fatigue toggle plate is connected with the transverse side face of the upper supporting column, and the bottom edge of the upper anti-fatigue toggle plate is connected with the deck. The connecting structure solves the problem of stress concentration at the end of the strut, improves the yield strength and the fatigue strength of the end of the strut, and can improve the overall safety of a ship.

Description

Technical Field

[0001] The utility model relates to the field of ships, in particular to a connecting structure at the end of a pillar of a car carrier. Background Art

[0002] As Figure 1 、 Figure 2 shown, car carriers are mainly used to transport large and small cars. In order to facilitate the loading and unloading of vehicles, transverse bulkheads are rarely provided in the cargo holds of car carriers, and the overall transverse framework is composed of main frames and pillars. As an important support between vehicle decks, the pillars not only bear the vertical load from the vehicle decks, but also bear the lateral stress of the hull under the hull rolling load. Therefore, the design of the pillars is crucial for the overall strength of the car carrier. Due to the weak transverse stiffness of the car carrier, the end of the pillar (the connection position between the pillar and the vehicle deck) is prone to fatigue failure under the alternating rolling conditions of the ship, endangering the safety of the hull.

[0003] The pillar bears the vertical load from the upper vehicle deck and the lateral load during the rolling motion of the hull at the same time, and large stress concentration occurs at the end of the pillar (the connection with the vehicle deck). The stress concentration at the end of the pillar is very obvious (as Figure 3 、 Figure 4 shown), and it is extremely prone to fatigue failure under the action of transverse alternating loads. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the above defects. The utility model provides a connecting structure at the end of a pillar of a car carrier, which improves the fatigue strength of the end connecting structure to enhance the safety of the ship. To achieve the above purpose, the technical solution of the utility model includes:

[0005] A connecting structure at the end of a pillar of a car carrier, which comprises:

[0006] A lower pillar, the top of which is connected to the connection of the transverse girder and the longitudinal girder;

[0007] Two lower anti-fatigue brackets, which are distributed on both sides of the lower pillar along the direction of the transverse girder; the vertical side of the lower anti-fatigue bracket is connected to the longitudinal side of the lower pillar, and its top side is connected to the bottom of the transverse girder;

[0008] A deck, which is arranged above the transverse girder and the longitudinal girder;

[0009] An upper pillar, which is located directly above the lower pillar, and the bottom end of which is connected to the deck; two upper anti-fatigue brackets along the direction of the longitudinal girder are arranged between the two transverse sides of the upper pillar and the deck; the vertical side of the upper anti-fatigue bracket is connected to the transverse side of the upper pillar, and its bottom side is connected to the deck.

[0010] A further improvement of the present utility model lies in that: the hypotenuse of the lower anti-fatigue gusset includes a straight section and an arc section; the straight section is located below the arc section, and the angle between it and the vertical side is less than 15°; the arc section is connected between the top of the straight section and the top edge of the lower anti-fatigue gusset; the length of the top edge is less than 200 mm; the length of the vertical side is less than 400 mm.

[0011] A further improvement of the present utility model lies in that: the hypotenuse of the upper anti-fatigue gusset includes a straight section and an arc section; the straight section is located above the arc section, and the angle between it and the vertical side is less than 15°; the arc section is connected between the bottom of the straight section and the bottom edge of the upper anti-fatigue gusset; the length of the bottom edge is less than 200 mm; the length of the vertical side is less than 400 mm.

[0012] A further improvement of the present utility model lies in that: four transverse reinforcing plates are provided at the connection of the transverse girder and the longitudinal girder.

[0013] A further improvement of the present utility model lies in that: a connecting plate for support is provided between the top end of the lower column and the bottom end of the upper column.

[0014] A further improvement of the present utility model lies in that: the distances between the two longitudinal sides of the upper column and the lower column are equal; and the longitudinal sides of the upper column and the lower column are flush with each other up and down.

[0015] A further improvement of the present utility model lies in that: the distance between the two transverse sides of the upper column is less than the distance between the two transverse sides of the lower column.

[0016] The beneficial effects of the present utility model include: adopting the column end structure of the present utility model can increase the fatigue life of the fatigue hot spot at the column end; solve the problem of stress concentration at the column end, improve the yield strength and fatigue strength of the column end, and can enhance the overall safety of the ship. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of a column of a pure car carrier in the prior art;

[0018] Figure 2 It is a top view of a column of a pure car carrier in the prior art;

[0019] Figure 3 It is a transverse stress nephogram of the column in the prior art (front view);

[0020] Figure 4 It is Figure 3 The partial enlarged view at the circled part in

[0021] Figure 5This is a three-dimensional schematic diagram of the connection structure at the end of the pillar of the car carrier in this embodiment;

[0022] Figure 6 This is a three-dimensional schematic diagram of the connection structure at the end of the pillar of the car carrier in this embodiment;

[0023] Figure 7 This is a three-dimensional schematic diagram of the connection structure at the end of the pillar of the car carrier in this embodiment;

[0024] Figure 8 This is a three-dimensional schematic diagram of the connection structure at the end of the pillar of the car carrier in this embodiment;

[0025] Figure 9 This is a schematic diagram of the upper anti-fatigue gusset plate;

[0026] Figure 10 This is a schematic diagram of the lower anti-fatigue gusset plate. Detailed implementation manners

[0027] The following uses specific specific examples to illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0028] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. Therefore, only the components related to the present invention are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0029] As Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 As shown, the embodiment of the present invention provides a connection structure at the end of the pillar of a car carrier, which includes: a lower pillar 10, a lower anti-fatigue gusset plate 11, a deck 20, an upper pillar 30, a transverse girder 40, and a longitudinal girder 41.

[0030] In this embodiment, the top of the lower pillar 10 is connected to the connection points of the transverse girder 40 and the longitudinal girder 41 by welding. The lower pillar 10 is made of steel structure, and its cross-section is quasi-rectangular. The two opposite side faces perpendicular to the transverse girder 40 are longitudinal side faces 51a; the two opposite side faces parallel to the transverse girder 40 are transverse side faces 52a.

[0031] Two lower anti-fatigue gussets 11 are distributed on both sides of the lower column 10 along the direction of the transverse girder 40; the vertical sides of the lower anti-fatigue gussets 11 are connected to the longitudinal side surface 51a of the lower column 10 by welding, and their top sides are connected to the bottom of the transverse girder 40 by welding. The two lower anti-fatigue gussets 11 are flush with the transverse side surface 52a of the lower column 10 adjacent to the transverse girder 40.

[0032] The deck 20 is arranged above the transverse girder 40 and the longitudinal girder 41 and is connected to the transverse girder 40 and the longitudinal girder 41 by welding.

[0033] The upper column 30 is located directly above the lower column 10, and its bottom end is connected to the deck 20 by welding. Two upper anti-fatigue gussets 31 are arranged between each of its two transverse side surfaces 52b and the deck 20. The vertical sides of the upper anti-fatigue gussets 31 are connected to the transverse side surfaces 52b of the upper column 30 by welding, and their bottom sides are connected to the deck 20 by welding. The two upper anti-fatigue gussets 31 on each transverse side surface 52b are both located at the edge of the transverse side surface 52b and are flush with the adjacent longitudinal side surface 51b.

[0034] The lower anti-fatigue gussets 11 and the upper anti-fatigue gussets 31 can effectively solve the problem of stress concentration at the connection between the column and the cross beam. The yield strength and fatigue strength of the column end are improved, and the overall safety of the ship can be enhanced.

[0035] As Figure 10 shown, the hypotenuse of the lower anti-fatigue gusset 11 includes a straight section 111 and an arc section 112; the straight section 111 is located below the arc section 112, and the angle deg between it and the vertical side is less than 15°; the arc section 112 is connected between the top of the straight section 111 and the top side of the lower anti-fatigue gusset 11; the length D1 of the top side is less than 200 mm; the length of the vertical side is less than 400 mm.

[0036] As Figure 9 shown, the hypotenuse of the upper anti-fatigue gusset 31 includes a straight section 311 and an arc section 312; the straight section 311 is located above the arc section 312, and the angle deg with the vertical side is less than 15°; the arc section 312 is connected between the bottom of the straight section 311 and the bottom side of the upper anti-fatigue gusset 31; the length D1 of the bottom side is less than 200 mm; the length D2 of the vertical side is less than 400 mm.

[0037] In this embodiment, four transverse reinforcing plates 21 are arranged at the connection of the transverse girder 40 and the longitudinal girder 41. The two right-angled sides of each transverse reinforcing plate 21 are respectively connected to the bottoms of the transverse girder 40 and the longitudinal girder 41 by welding.

[0038] In order to transfer the load, a connecting plate 22 for support is provided between the top end of the lower support column 10 and the bottom end of the upper support column 30.

[0039] In this embodiment, the distances between the two longitudinal sides of the upper support column 30 and the lower support column 10 are equal; and the longitudinal sides of the upper support column 30 and the lower support column 10 are flush with each other vertically.

[0040] In some embodiments, the upper support column 30 and the lower support column have equal cross-sections.

[0041] In other embodiments, the distance between the two transverse sides 52a of the upper support column 30 is smaller than the distance between the two transverse sides 52b of the lower support column 10. In this case, the two transverse sides of the upper support column 30 and the lower support column adjacent to the transverse girder 40 are flush with each other. As Figure 7 shown, the two transverse sides on the other side are staggered. To adapt to this situation, the connecting plate 22 is inclined here to ensure effective load transfer.

[0042] The above embodiments merely illustrate the principles and effects of the present invention, rather than limiting the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A car carrier pillar end connection structure, characterized in that include: A lower support (10), the top end of which is connected to the connection point of the transverse beam (40) and the longitudinal beam (41); Two lower anti-fatigue brackets (11) are distributed on both sides of the lower support column (10) along the direction of the transverse beam (40); the vertical sides of the lower anti-fatigue brackets (11) are connected to the longitudinal side surfaces of the lower support column (10), and the top sides thereof are connected to the bottom of the transverse beam (40); A deck (20) is arranged above the transverse beam (40) and the longitudinal beam (41); An upper support column (30) is located directly above the lower support column (10), and its bottom end is connected to the deck (20); two upper anti-fatigue brackets (31) are arranged along the direction of the longitudinal beam (41) between its two lateral sides and the deck (20); the vertical sides of the upper anti-fatigue brackets (31) are connected to the lateral sides of the upper support column (30), and the bottom sides are connected to the deck (20).

2. The car transport ship pillar end connection structure according to claim 1, characterized in that: The hypotenuse of the lower anti-fatigue bracket (11) comprises a straight section and an arc section; the straight section is located below the arc section, and the angle between the straight section and the vertical side is less than 15°; the arc section is connected between the top of the straight section and the top side of the lower anti-fatigue bracket (11); the length of the top side is less than 200 mm; and the length of the vertical side is less than 400 mm.

3. The car carrier pillar end connection structure according to claim 1, characterized in that: The hypotenuse of the upper anti-fatigue bracket (31) comprises a straight section and an arc section; the straight section is located above the arc section and the angle between the straight section and the vertical side is less than 15°; the arc section is connected between the bottom of the straight section and the bottom side of the upper anti-fatigue bracket (31); the length of the bottom side is less than 200 mm; and the length of the vertical side is less than 400 mm.

4. The car carrier pillar end connection structure according to claim 1, characterized in that: Four transverse reinforcing plates (21) are arranged at the connection between the transverse beam (40) and the longitudinal beam (41).

5. The car carrier pillar end connection structure according to claim 1, characterized in that: A connecting plate (22) for supporting is arranged between the top end of the lower support (10) and the bottom end of the upper support (30).

6. The car carrier pillar end connection structure according to claim 5, characterized in that: The distances between the two longitudinal sides of the upper support (30) and the lower support (10) are equal; and the longitudinal sides of the upper support (30) and the lower support (10) are flush with each other.

7. The car carrier pillar end connection structure according to claim 5, characterized in that: The distance between the two lateral sides of the upper support (30) is smaller than the distance between the two lateral sides of the lower support (10).

Images