A main girder connecting beam structure for a semi-circular main girder shore-based crane

Abstract

The application discloses a main beam connecting cross beam structure for a semicircular main beam shore bridge, which comprises a box type structure arranged through a semicircular main beam, the length axis of the box type structure is perpendicular to the length axis of the semicircular main beam, the box type structure comprises an upper panel, a lower panel, an inner side web and an outer side web, the upper panel and the lower panel are arranged through the semicircular main beam, the inner side web is arranged between the outer side of the semicircular main beam and the inner side of the upper panel and the lower panel, the outer side web is arranged between the outer side of the semicircular main beam and the outer side of the upper panel and the lower panel, and the upper surface of the upper panel is provided with a connecting lug plate. The application improves the connecting reliability between the connecting cross beam and the semicircular main beam.

Description

Technical Field

[0001] This invention relates to a main girder connecting crossbeam, and more specifically, to a main girder connecting crossbeam structure for a semi-circular main girder quay bridge. Background Technology

[0002] Combination Figure 1 and Figure 2 As shown, the semi-circular main girder quay crane is a device that uses a trolley to travel back and forth on a track on the semi-circular main girder 1, and uses a spreader 2 to load and unload containers 3 from a dock or ship. In order to maintain a certain preload on the lifting wire rope and not interfere with the semi-circular main girder 1, the tail of the semi-circular main girder 1 needs to extend out like wings to the left and right to connect with the crossbeams 4. Then, a hanging mechanism 5 is arranged on the connecting crossbeams 4. Each time the spreader 2 is raised and lowered, the hanging mechanism 5 needs to move in coordination, generating alternating loads. This results in a complex and severe stress situation on the connecting crossbeams 4, and cracking may occur at the intersection of the semi-circular main girder 1 and the connecting crossbeams 4. Therefore, the reliability requirements for the connection design between the connecting crossbeams 4 and the semi-circular main girder 1 are very high. Summary of the Invention

[0003] To address the aforementioned deficiencies in the existing technology, the purpose of this invention is to provide a main beam connecting crossbeam structure for a semi-circular main beam quay bridge, thereby improving the connection reliability between the connecting crossbeam and the semi-circular main beam.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A main beam connecting crossbeam structure for a semi-circular main beam quay bridge includes a box-shaped structure passing through the semi-circular main beam, wherein the length axis of the box-shaped structure intersects perpendicularly with the length axis of the semi-circular main beam.

[0006] The box-shaped structure includes a top panel, a bottom panel, an inner web, and an outer web;

[0007] Both the upper panel and the lower panel pass through the semi-circular main beam;

[0008] The inner web is located between the inner side of the semi-circular main beam, the inner side of the upper panel and the inner side of the lower panel, and the outer web is located between the outer side of the semi-circular main beam, the outer side of the upper panel and the outer side of the lower panel.

[0009] The upper surface of the upper panel is provided with a connecting ear plate.

[0010] Preferably, both the upper panel and the lower panel are provided with weight reduction holes.

[0011] Preferably, the weight-reducing hole is located at the middle position of the upper panel and the lower panel.

[0012] Preferably, both the upper panel and the lower panel are further provided with reinforcing ribs;

[0013] The reinforcing rib has two sections, located on both sides of the weight-reducing hole.

[0014] Preferably, the semi-circular main beam has a groove for the upper panel and the lower panel to pass through.

[0015] Preferably, the width of the groove is 2 mm greater than the thickness of the upper panel and the lower panel.

[0016] Preferably, the end of the groove is provided with a stress relief hole;

[0017] The stress relief hole is equipped with a stress relief hole sealing plate.

[0018] Preferably, the diameter of the stress relief hole is twice the thickness of the upper panel and the lower panel.

[0019] Preferably, a plurality of rib partitions are provided between the upper panel and the lower panel;

[0020] The positions of the rib-supporting partition plate and the connecting ear plate are corresponding.

[0021] Preferably, a manhole is also provided on the outer side of the semi-circular main beam.

[0022] The present invention provides a main beam connecting crossbeam structure for a semi-circular main beam quay bridge, which features an integrated design and manufacturing of upper and lower panels, improving fatigue performance at the connection point, reducing the risk of cracking, and enhancing the connection reliability between the connecting crossbeam and the semi-circular main beam. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of an existing semi-circular main girder quay bridge;

[0024] Figure 2 yes Figure 1 A top-down view;

[0025] Figure 3 This is a schematic diagram of the main beam connecting the crossbeam structure of the present invention;

[0026] Figure 4 yes Figure 3 A top-down view;

[0027] Figure 5 yes Figure 3 A schematic diagram of the A1-A1 direction;

[0028] Figure 6 yes Figure 3 A schematic diagram of the A2-A2 direction;

[0029] Figure 7 yes Figure 6 A schematic diagram of the A3-A3 direction;

[0030] Figure 8 yes Figure 6 A schematic diagram of the A4-A4 direction;

[0031] Figure 9 yes Figure 7 A schematic diagram of the A5 direction;

[0032] Figure 10 yes Figure 6 A schematic diagram of direction A6 in the middle;

[0033] Figure 11 yes Figure 5 A schematic diagram of the A7-A7 direction;

[0034] Figure 12 yes Figure 5 A schematic diagram of the A8-A8 direction;

[0035] Figure 13 yes Figure 5 A schematic diagram of the A9-A9 direction. Detailed Implementation

[0036] To better understand the above-mentioned technical solutions of the present invention, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] Combination Figures 3 to 4 As shown, the present invention provides a main beam connecting crossbeam structure for a semi-circular main beam quay bridge, including a box-shaped structure 7 that passes through the semi-circular main beam 6, wherein the length axis of the box-shaped structure 7 intersects perpendicularly with the length axis of the semi-circular main beam 6.

[0038] Combination Figures 5 to 13 As shown, the box-shaped structure 7 includes an upper panel 8, a lower panel 9, an inner web 10, and an outer web 11.

[0039] Both the upper panel 8 and the lower panel 9 pass through the semi-circular main beam 6, dividing the webs at corresponding positions on the semi-circular main beam 6 into a first web 12, a second web 13, a third web 14, a fourth web 15, a fifth web 16, and a sixth web 17. The first web 12, second web 13, and third web 14 are welded to their respective semi-circular main beam 6, upper panel 8, and lower panel 9, respectively. Similarly, the fourth web 15, fifth web 16, and sixth web 17 are also welded to their respective semi-circular main beam 6, upper panel 8, and lower panel 9. The second web 13 is aligned with the fifth web 16.

[0040] The inner web 10 is connected between the inner side of the semi-circular main beam 6, the inner side of the upper panel 8, and the inner side of the lower panel 9; the outer web 11 is connected between the outer side of the semi-circular main beam 6, the outer side of the upper panel 8, and the outer side of the lower panel 9.

[0041] The upper surface of the upper panel 8 is provided with a connecting ear plate near the outer side for mounting the hanging cylinder of the hanging mechanism.

[0042] Weight reduction holes 18 are provided in the middle of the upper panel 8 and the lower panel 9. The weight reduction holes 18 are rectangular with rounded corners.

[0043] The weight-reducing hole 18 is provided with reinforcing ribs 19 on both sides along its length to reduce deformation of the weight-reducing hole 18.

[0044] The semi-circular main beam 6 has a groove for the upper panel 8 and the lower panel 9 to pass through. The width of the groove is 2mm larger than the thickness of the upper panel 8 and the lower panel 9, which facilitates the installation of the upper panel 8 and the lower panel 9.

[0045] The end of the groove is provided with a stress relief hole 20, the diameter of which is twice the thickness of the upper panel 8 and the lower panel 9.

[0046] The stress relief hole 20 is equipped with a stress relief hole sealing plate 21, which is welded together with the semi-circular main beam 6, the upper panel 8, and the lower panel 9.

[0047] Several pairs of stiffening partitions 22, 23, and 24 are provided between the upper panel 8 and the lower panel 9. The positions of the stiffening partitions 22, 23, and 24 correspond to those of the connecting ear plates to enhance the installation strength of the hanging mechanism.

[0048] A manhole 25 is also provided on the outer side of the semi-circular main beam 6 to facilitate welding work by the staff.

[0049] In summary, the main beam connecting the crossbeam structure of this invention employs different connection designs based on the stress characteristics. A slot is cut into the side of the semi-circular main beam, and the upper and lower panels pass through the semi-circular main beam, resulting in an integrated design of the upper and lower panels and improving fatigue reliability. The web plate is connected to the semi-circular main beam using a cross-welded joint, facilitating structural manufacturing.

[0050] Those skilled in the art should recognize that the above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Any variations or modifications to the above embodiments that are within the spirit and essence of the present invention will fall within the scope of the claims of the present invention.

Claims

1. A main girder connecting crossbeam structure for a semi-circular main girder quay bridge, characterized in that: It includes a box-shaped structure that passes through a semi-circular main beam, wherein the length axis of the box-shaped structure intersects perpendicularly with the length axis of the semi-circular main beam; The box-shaped structure includes a top panel, a bottom panel, an inner web, and an outer web; A slot is cut into the side of the semi-circular main beam, and both the upper panel and the lower panel pass through the semi-circular main beam, so that the upper panel and the lower panel are integrated into one piece, which improves fatigue reliability. The webs at corresponding positions on the semicircular main beam are divided into a first web, a second web, a third web, a fourth web, a fifth web, and a sixth web. The first, second, and third webs are welded to the corresponding semicircular main beam, the upper panel, and the lower panel, respectively. The fourth, fifth, and sixth webs are also welded to the corresponding semicircular main beam, the upper panel, and the lower panel, respectively. The second and fifth webs are aligned. The inner web is located between the inner side of the semi-circular main beam, the inner side of the upper panel and the inner side of the lower panel, and the outer web is located between the outer side of the semi-circular main beam, the outer side of the upper panel and the outer side of the lower panel. The upper surface of the upper panel is provided with a connecting ear plate for mounting the hanging cylinder of the hanging mechanism; Weight reduction holes are provided in the middle of both the upper panel and the lower panel. The weight reduction holes are rectangular with rounded corners. Reinforcing ribs are provided on both sides of the length of the weight reduction holes to reduce deformation of the weight reduction holes. The semi-circular main beam has a groove for the upper panel and the lower panel to pass through; the width of the groove is 2mm greater than the thickness of the upper panel and the lower panel; the end of the groove is provided with a stress relief hole; the diameter of the stress relief hole is twice the thickness of the upper panel and the lower panel. The stress relief hole is equipped with a stress relief hole sealing plate, which is welded together with the semi-circular main beam, the upper panel, and the lower panel. Several pairs of ribs are provided between the upper panel and the lower panel. The positions of the ribs correspond to those of the connecting ear plates to enhance the installation strength of the hanging mechanism.

2. The main beam connecting crossbeam structure for a semi-circular main beam quay bridge according to claim 1, characterized in that: The reinforcing rib has two sections, located on both sides of the weight-reducing hole.

3. The main girder connecting crossbeam structure for a semi-circular main girder quay bridge according to claim 1, characterized in that: The outer surface of the semi-circular main beam is also provided with a manhole for the workers to facilitate welding operations.

Images