Shore crane transfer platform connecting structure and mounting method

Abstract

The quay crane transfer platform connecting structure is used for installing a transfer platform to a quay crane, the quay crane comprises a pair of seaside stand columns, a pair of landside stand columns, a door frame connecting beam and a pair of lower cross beams, and the door frame connecting beam is used for connecting the seaside stand columns and the landside stand columns; the pair of lower cross beams are respectively used for connecting the pair of seaside upright posts and the pair of landside upright posts; the connecting structure comprises a connecting shelf and a pull rod, and the connecting shelf is arranged on the lower cross beam and used for supporting the transfer platform. The pull rod is used for connecting the transfer platform and the door frame connecting beam. The invention further provides a transfer platform installation method and a quay crane. The quay crane transfer platform connecting structure can shorten the installation period and reduce the construction difficulty.

Description

Technical Field

[0001] The present invention relates to the field of quay cranes, and in particular to the field of transfer platform connection structures. Background Art

[0002] The transfer platform of the quay crane is used for the transfer of containers between the quay crane and the transport vehicle. In the traditional quay crane structure, pins and tie rods are often used to connect with the door frame connecting beam and lower cross beam of the quay crane to fix the transfer platform. However, the installation period of this installation structure is long and the construction difficulty is high.

[0003] Therefore, it is necessary to propose a new connection structure of the quay crane transfer platform. Summary of the invention

[0004] An object of the present invention is to provide a quay crane transfer platform connection structure that can shorten the installation period and reduce the construction difficulty.

[0005] To achieve the above-mentioned purpose, the quay crane transfer platform connection structure is used to install the transfer platform to the quay crane, and the quay crane includes a pair of sea-side columns, a pair of land-side columns, a door frame connecting beam and a pair of lower cross beams. The door frame connecting beam is used to connect the sea-side columns and the land-side columns; a pair of lower cross beams are used to connect a pair of sea-side columns and a pair of land-side columns respectively; the connection structure includes a connecting bracket and a pull rod, the connecting bracket is arranged on the lower cross beam for supporting the transfer platform; the pull rod is used to connect the transfer platform and the door frame connecting beam.

[0006] In one or more embodiments, the pull rod includes a first lifting ear at one end, the door frame connecting beam includes a door frame connecting beam lifting ear, and the axes of the first lifting ear and the door frame connecting beam lifting ear are in the same direction.

[0007] In one or more embodiments, the axial direction of the first hanging ear and the door frame connecting beam hanging ear is the same as the extending direction of the lower cross beam.

[0008] In one or more embodiments, the pull rod includes a second lifting ear at the other end, and the axes of the second lifting ear and the first lifting ear are in the same direction.

[0009] In one or more embodiments, a plurality of the connecting brackets are respectively welded to the upper surface of the lower cross beam.

[0010] In one or more embodiments, the structure further comprises a pad assembly disposed between the connection shelf and the transfer platform.

[0011] In one or more embodiments, the backing plate assembly includes a rigid backing plate and / or a flexible backing plate.

[0012] In one or more embodiments, the flexible pad is located between a pair of rigid pads, and the area of ​​the rigid pad is larger than that of the flexible pad.

[0013] In one or more embodiments, the connecting shelf is connected to the base of the transfer platform via a shear block.

[0014] Another object of the present invention is to provide a quay crane, which includes the above-mentioned quay crane transfer platform connection structure.

[0015] Another object of the present invention is to provide a transfer platform installation method, using the above-mentioned quay crane transfer platform connection structure, the method includes the following steps: fixing the connecting bracket on the lower crossbeam; preparing the transfer platform, the pull rod, and the door frame connecting beam lifting ear; hoisting the pull rod into place and connecting it with the door frame connecting beam lifting ear; placing the pad assembly on the connecting bracket; connecting one end of the pull rod to the door frame connecting beam, hoisting the transfer platform and hoisting it into place, and connecting the other end of the pull rod to the transfer platform.

[0016] The above-mentioned quay crane transfer platform connection structure adopts a connecting bracket to install the transfer platform. The bracket can be installed in place during the structure manufacturing stage without the need for pin installation, which simplifies the installation process and avoids damage during the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which:

[0018] Figure 1 This is a basic structural diagram of the quay crane;

[0019] Figure 2 It is a schematic diagram of the connection structure of the quay crane transfer platform;

[0020] Figure 3 It is a partial top view of the transfer platform and the lower beam;

[0021] Figure 4 It is a schematic diagram of the traditional tie rod structure;

[0022] Figure 5 yes Figure 4 The enlarged view of point A in the middle;

[0023] Figure 6 is a side view of the tie rod;

[0024] Figure 7 yes Figure 6 The enlarged view of point B in the middle;

[0025] Figure 8 It is a schematic diagram of the connecting beam between the column and the door frame;

[0026] Figures 9A-9B This is a schematic diagram of the lower beam and shelf;

[0027] Fig.10 It is a top view of the shelf;

[0028] Fig.11 This is a top view of the transfer platform;

[0029] Fig.12 It is a side view of the transfer platform;

[0030] Fig.13 It is the front view of the transfer platform;

[0031] Fig.14 is a schematic diagram of the pad assembly;

[0032] Fig.15 is a schematic diagram of a rigid pad and a flexible pad;

[0033] Fig.16 It is a schematic diagram of the setting position of the shelf. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with specific embodiments and drawings. More details are elaborated in the following description to facilitate a full understanding of the present invention. However, the present invention can obviously be implemented in a variety of other ways different from the description herein. Those skilled in the art can make similar generalizations and deductions based on actual application situations without violating the connotation of the present invention. Therefore, the protection scope of the present invention should not be limited by the content of this specific embodiment.

[0035] It should be noted that these and other subsequent drawings are only examples and are not drawn to scale, and should not be used to limit the actual scope of protection required by the present invention.

[0036] Figure 1 The basic structure of the quay crane is shown, including a beam 11, a pair of sea-side columns 12, a pair of land-side columns 13, a door frame connecting beam 14 and lower cross beams 15 and 15'. The pair of sea-side columns 12 and the pair of land-side columns 13 form a door frame structure, and the door frame connecting beam 14 is used to connect a sea-side column 12 and a land-side column 13. The pair of door frame connecting beams 14 are respectively perpendicular to Figure 1 The lower cross beams 15 and 15' are respectively connected to a pair of sea side columns 12 and a pair of land side columns 13. The lower cross beams 15 and 15' are perpendicular to the sea side columns 12 (or the land side columns 13) and the door frame connecting beam 14.

[0037] The transfer platform 16 is an indispensable part of the double-trolley quay crane, and some conventional quay cranes also have this type of structure. The transfer platform 16 is used as a platform for transferring containers between the two trolleys of the shore crane during loading and unloading operations. In the past, the transfer platform 16 was connected to the quay crane door frame connecting beam 14 and the lower cross beam using a pin shaft (not shown in the figure) and a pull rod 18. A plurality of pin shaft connection lugs are arranged at the bottom of the transfer platform 16, which are connected to the lugs on the lower cross beam through pin shafts. However, this installation structure has many problems.

[0038] First, during installation, the base of the pin shaft and the tie rod 18 need to be adjusted horizontally according to the actual situation on site, and welding can only be carried out after the internal reinforcement of the box body is qualified. This leads to a long installation period and causes great damage to the paint of the quay crane door frame structure. Secondly, the structure is prone to the problem of misalignment between the pin shaft ear plate and the rib plate in the lower cross beam due to manufacturing deviations. In this case, it is necessary to re-reinforce or adjust the rib plate in the box body, which seriously damages the paint inside the box body and is difficult to construct. In addition, the installation direction of the upper tie rod connecting ear plate of the door frame connecting beam 14 is the sea-land side, that is, Figure 1 The left and right directions shown in the figure, while the tie rod connecting ear plate on the transfer platform is installed in the front and rear directions, that is, perpendicular to Figure 1 The direction of the paper, so the two ends of the tie rod connecting the transfer platform and the door frame structure are in a 90° cross shape. To ensure that the tie rod installation and verticality meet the requirements, it is necessary to wait until the upper structure of the quay crane is assembled according to the measured ear plate opening of the tie rod on the door frame to match the transfer platform shaft hole margin, and it is difficult to install the cross-shaped pins at both ends of the tie rod, which leads to a longer installation period for the transfer platform and affects the commissioning of the quay crane equipment.

[0039] Based on this, the present invention proposes a quay crane transfer platform connection structure, which can shorten the installation period, reduce the construction difficulty, and effectively reduce the on-site welding workload and paint damage.

[0040] like Figure 2 As shown, the new quay crane transfer platform connection structure includes a connection bracket 19 and a tie rod 18. The tie rod 18 is used to connect the transfer platform 16 and the door frame connecting beam 14. The connection bracket 19 is arranged on the lower cross beam 15 to support the transfer platform 16. Specifically, the connection bracket 19 supports the base 160 of the transfer platform 16. The connection structure uses a double bracket form instead of a pin support form to fix the transfer platform. The transfer platform is placed on the connection bracket 19 as a whole. The bracket can be installed in place during the structure manufacturing stage, which simplifies the installation process.

[0041] Furthermore, the connecting bracket 19 is connected to the transfer platform 16 through a shear block (not shown in the figure). The transfer platform 16 and the lower cross beam are connected and fixed to the connecting bracket 19 through the shear block. The shear block is a connector used in buildings and engineering structures, which can enhance the shear resistance of the node and allow a certain degree of adjustment to adapt to construction errors or deformation requirements.

[0042] The transfer platform 16 and the lower cross beam 15 are connected and fixed to the connecting bracket 19 through a shear block, so the base is welded to the structure in place during the manufacturing stage of the lower cross beam. In order to ensure the level of the transfer platform and the contact surface gap between the transfer platform and the bracket, a thickness allowance is placed on the contact surface of the connecting bracket 19, and a trimming allowance is placed on the height of the box. After the bracket is prefabricated into an assembly, the thickness allowance of the contact surface is processed to ensure the flatness of the contact surface of the assembly. After the lower cross beam is completed, turned over and marked, the height allowance of the shelf assembly is trimmed based on the center of the lower cross beam box, and the horizontal flatness of the shelf contact surface is detected using a laser theodolite. At the same time, in order to reduce the impact of welding on the contact surface flatness between the bracket assembly and the structure, the assembly gap between the assembly and the structure is strictly controlled to meet the minimum gap required by the welding process.

[0043] In order to further adapt to the construction error or deformation requirements, ensure the level of the transfer platform and the contact surface gap between the transfer platform and the shelf, the connection structure also includes a pad assembly 20 arranged between the connection shelf 19 and the base 160 of the transfer platform 16, and the pad assembly 20 includes a rigid pad 21 and / or a flexible pad 22, such as Fig.14 and Fig.15 As shown. A flexible pad 22 is arranged between the rigid pads 21. The rigid pad 21 can adjust the size error, and the flexible pad 22 can buffer and fill the irregular gaps between the steel pads. In order to avoid the left-right misalignment of the upper and lower steel pads caused by the deviation between the center of the transfer platform and the center of the lower beam due to the cumulative deviation of the quay crane assembly, the area of ​​the rigid pad is made larger than the flexible pad. For example, the area of ​​the rigid pad located above is made larger than the flexible pad. The pad welded to the transfer platform is enlarged in the left and right width directions to ensure that the edge of the steel pad does not cut the flexible pad, thereby increasing the service life of the flexible pad.

[0044] like Figure 2 and Figure 8 As shown, the pull rod 18 includes a first hanging ear 181 at one end, and the door frame connecting beam 14 includes a door frame connecting beam hanging ear 141. The axes of the first hanging ear 181 and the door frame connecting beam hanging ear 141 are in the same direction. Figure 2 In the embodiment shown, considering the hoisting direction and force of the quay crane, the axes of the first lifting lug 181 and the door frame connecting beam lifting lug 141 are perpendicular to Figure 1 The direction of the paper is the same as the extending direction of the lower cross beams 15 and 15'.

[0045] In some embodiments, the pull rod 18 further includes a second lifting ear 182 at the other end for connecting with the transfer lifting ear 161 on the transfer platform. Figure 2 and Figure 6 As shown. The axes of the second lifting lug 182 and the first lifting lug 181 are in the same direction. Figure 4The traditional tie rod structure shown is a first lifting lug 181' and a second lifting lug 182' that intersect at 90 degrees, and the pins at both ends of the new tie rod are changed to parallel. Before the optimization, the transfer platform had a 90-degree cross-shaped pin at both ends of the tie rod. In order to ensure that the verticality of the transfer platform tie rod meets the requirements after the assembly, the door frame connecting beam ear plate opening and the relative column centerline size data were measured after the quay crane assembly was completed. Then, the ear plate heavy plate thickness margin and inner hole margin on the transfer platform were allocated based on the measured data, and the entire production cycle was relatively long. The pins at both ends of the new tie rod are changed to parallel and the ear plate opening at both ends of the tie rod is increased to facilitate the adjustment of the verticality of the tie rod in the left and right directions through the shaft sleeve. In addition, after the production is completed, the heavy plate thickness margin of the transfer ear 161 of the transfer platform is processed in place according to the drawing requirements. There is no need to wait for the door frame tie rod connection ear plate opening data to allocate the processing pin hole after the quay crane assembly, which saves construction time.

[0046] Since one end of the transfer platform 16 is connected to the door frame structure through the pull rod 18, the verticality of the pull rod in the sea and land directions needs to be ensured by controlling the distance deviation of the ear plate on the left and right door frame structures relative to the center line of the column. Therefore, when assembling the left and right door frames, the size from the center of the column to the ear plate hole must be checked to meet the drawing size when trimming the assembly mouth margin, and the ear plate opening size control requirements connected to the door frame structure are increased to ensure that the ear plate shaft hole size is matched with the ear plate shaft hole size processed according to the drawing size after the transfer platform is completed, and the verticality of the pull rod on the sea and land sides meets the drawing requirements.

[0047] The outer dimensions of the transfer platform structure and the opening dimensions of the pull rod ear plate are directly marked and processed according to the requirements of the drawings during the production stage, and no longer matched with the ear plate opening on the door frame structure. The rigid pad 21 of the pad assembly 20 at the contact position with the shelf has a thickness margin, and is spot welded on the transfer platform structure during production. When the marking is completed, the center of the ear plate shaft hole and the margin processing line are marked with the center line as the reference, and then the thickness margin of the steel pad is marked with the center of the ear plate hole and the position is marked. After the pad is spot welded, it is taken down and the thickness is processed according to the marking. After the processing is completed, the steel pad is welded to the transfer platform structure according to the position mark.

[0048] The above-mentioned quay crane transfer platform connection structure has the following advantages:

[0049] (1) The transfer platform is installed by using an adjustable shear block in conjunction with a connecting bracket. The bracket can be installed in place during the structural manufacturing stage without the need for pin installation, thus simplifying the installation process;

[0050] (2) The structure of double steel pads and flexible pads solves the problem of gap between the bonding surfaces caused by cumulative deviations;

[0051] (3) The installation direction of the tie rod connecting ear plate on the transfer platform is optimized to be consistent with the installation direction of the tie rod connecting ear plate of the door frame connecting beam, and the pin shaft mounting holes at both ends of the tie rod are optimized from a cross shape to a parallel shape, thereby avoiding paint damage and reducing the installation cycle during assembly.

[0052] The following introduces the construction method of the quay crane transfer platform. It should be noted that the following methods do not necessarily constitute the order of construction.

[0053] First, two or more groups of connecting brackets 19 are prefabricated into assemblies, and the base bearing the shear block is welded to the connecting bracket 19, and the connecting bracket is welded to the lower beam 15 during the manufacturing stage of the lower beam structure. In order to reduce welding deformation, a trimming margin is placed at the bottom of the bracket. During assembly, the flatness of the upper surface of the connecting bracket is controlled first, and the margin at the bottom of the bracket is trimmed to ensure that the assembly gap meets the welding process requirements, so as to avoid the gap exceeding the tolerance and causing an increase in welding, which affects the flatness of the upper surface of the bracket.

[0054] Subsequently, the transfer platform structure and tie rods are manufactured according to the requirements of the drawings. The rigid pads are not welded for the time being. When the transfer platform structure is marked as a whole, the inner hole allowance of the connecting ear plate hole and the allowance of the heavy plate, the pad positioning line and the pad thickness are marked respectively, and the relevant marking dimensions are recorded. The pads with position marks are then spot welded and sent to the machine tool for thickness allowance processing. The processed pads are then welded to the transfer platform according to the marks. At the same time, the shear block base is welded in place and the bolt holes are drilled. Finally, the whole is sandblasted and painted.

[0055] After the quay crane superstructure was assembled, the laser total station was used to measure the dimensions related to the transfer platform installation. The center of the lower beam 15 was used as the reference to measure the opening size of the door frame connecting beam lug connecting lug on the door frame connecting beam 14, the size from the lug center to the center line of the column, and the size from the lug hole center to the upper surface of the shelf, combined with the completed marking and processing dimensions of the transfer platform structure. The length of the transfer platform tie rod and the width of the tie rod installation spacer were calculated, and the inner hole allowance of the lug holes at both ends of the tie rod and the spacer processing were performed.

[0056] Subsequently, before assembling the transfer platform components, the connecting rod is hoisted into place and the upper end is connected and fixed to the ear plate on the connecting beam. The transfer platform is then hoisted into place using the lifting equipment. After checking that the relevant installation is qualified, the lower end of the rod is connected to the transfer platform and the lifting equipment is unhooked.

[0057] Finally, after the transfer platform is installed, put the rigid pads and flexible pads on the shelf in place before hoisting the platform, then hoist the transfer platform components into place, and adjust the relevant dimensions to meet the requirements of the drawings. After the platform is adjusted into place, install the shear adjustment block welded to the base connected to the shelf 19 and fasten it into place.

[0058] In order to save installation cycle, relevant structural manufacturing dimensions are required to be collected during the structural manufacturing stage. After the quay crane upper structure is assembled, the height data from the upper ear plate of the door frame structure to the upper surface of the lower beam shelf is measured using a total station, and the left and right opening dimensions of the ear plate of the door frame structure are measured based on the center of the lower beam. Combined with the marking processing data of the tie rod connecting ear plate when the transfer platform structure is completed and the data from the column center to the door frame structure tie rod ear plate measured after the door frame is assembled. The length of the pin shaft hole at both ends of the connecting tie rod is determined by analyzing and calculating the associated dimensions. At the same time, the assembly relationship between the tie rod and the connecting ear plate is simulated through the measurement data, and the tie rod sleeve processing data is determined to ensure that the verticality of the transfer platform tie rod is within the design allowable range.

[0059] It should be noted that the above content uses words such as "first" and "second" to limit components, which is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0060] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0061] Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A quay crane transfer platform connection structure, used to install the transfer platform to the quay crane, the quay crane includes: a pair of sea-side columns; a pair of landside columns; A door frame connecting beam, used to connect the sea side column and the land side column; A pair of lower cross beams, respectively used to connect a pair of sea-side columns and a pair of land-side columns; characterized in that the connection structure comprises: A connecting bracket is arranged on the lower cross beam and is used to support the transfer platform; A pull rod is used to connect the transfer platform and the door frame connecting beam.

2. The quay crane transfer platform connection structure according to claim 1, characterized in that: The pull rod comprises a first lifting ear at one end, and the door frame connecting beam comprises a door frame connecting beam lifting ear, and the axes of the first lifting ear and the door frame connecting beam lifting ear are in the same direction.

3. The quay crane transfer platform connection structure according to claim 2, characterized in that: The axial directions of the first hanging ear and the door frame connecting beam hanging ear are the same as the extending direction of the lower cross beam.

4. The quay crane transfer platform connection structure according to claim 2, characterized in that: The pull rod comprises a second lifting ear at the other end, and the axes of the second lifting ear and the first lifting ear are in the same direction.

5. The quay crane transfer platform connection structure according to claim 1, characterized in that: A plurality of connecting brackets are respectively welded to the upper surface of the lower cross beam.

6. The quay crane transfer platform connection structure according to claim 1, characterized in that: The structure also includes a pad assembly, which is arranged between the connecting shelf and the transfer platform.

7. The quay crane transfer platform connection structure according to claim 6, characterized in that: The backing plate assembly includes a rigid backing plate and / or a flexible backing plate.

8. The quay crane transfer platform connection structure according to claim 7, characterized in that: The flexible pad is located between a pair of rigid pads, and the area of ​​the rigid pad is larger than that of the flexible pad.

9. The quay crane transfer platform connection structure according to claim 1, characterized in that: The connecting shelf is connected to the base of the transfer platform through a shear-resistant block.

10. A quay crane, characterized in that: It comprises a quay crane transfer platform connection structure as described in any one of claims 1 to 9.

11. A method for installing a transfer platform, using the quay crane transfer platform connection structure according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: Fix the connecting bracket to the lower beam; Prepare transfer platform, pull rods, and door frame connecting beam lifting ears; Lift the tie rod into place and connect it to the door frame connecting beam lug; Place the pad assembly on the connecting shelf; Connect one end of the pull rod to the door frame connecting beam, hoist the transfer platform and lift it into place, and connect the other end of the pull rod to the transfer platform.

Images