A doorframe for a container crane and its manufacturing method

Abstract

The present invention provides a doorframe for a container crane and a manufacturing method thereof. The doorframe for the container crane includes: two relatively arranged doorframe assemblies and two connecting beams arranged between the two doorframe assemblies; each of the doorframe assemblies includes: two columns, with a first connection port and a second connection port respectively provided at both ends of each column, and both ends of the connecting beam are respectively connected to the two columns; an upper crossbeam, with both ends of the upper crossbeam respectively connected to the first connection ports of the two columns; a lower crossbeam, with both ends of the lower crossbeam respectively connected to the second connection ports of the two columns; wherein, the columns, the lower crossbeam and the connecting beam are spiral steel pipes. The doorframe for the container crane in the embodiment of the present invention is formed by connecting columns, a lower crossbeam and connecting beams in the form of spiral steel pipes, and has the advantages of simple structure, small wheel pressure and strong wind resistance.

Description

Technical Field

[0001] The present invention relates to the technical field of crane steel structure installation, and particularly relates to a door frame for a container crane and a manufacturing method thereof. Background Art

[0002] With the continuous growth of global trade and the increasing size of container ships, the construction of large coastal ports is in full swing. At the same time, in recent years, the transportation volume of inland river terminals has been continuously increasing, and the demand for container cranes is also increasing.

[0003] The steel components of container cranes adopt the traditional box form, and affected by the width and depth of inland river channels, the existing door frame systems have the disadvantages of small berths, small yard depths, and small allowable wheel loads, thus affecting the stability of the gantry crane itself and its anti-storm ability, and unable to meet the requirements of inland river terminals for lightweight, small wheel load, and high cost-performance of quay cranes. Summary of the Invention

[0004] In view of this, the present invention provides a door frame for a container crane to solve the problem of low mechanical strength of the door frame system.

[0005] In addition, the present invention also provides a manufacturing method for a door frame of a container crane.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The door frame for a container crane according to an embodiment of the first aspect of the present invention includes:

[0008] Two relatively arranged door frame components and two connecting beams arranged between the two door frame components;

[0009] Each of the door frame components includes:

[0010] Two columns, each end of each column is respectively provided with a first connection port and a second connection port, and the two ends of the connecting beam are respectively connected to the two columns;

[0011] An upper cross beam, the two ends of the upper cross beam are respectively connected to the first connection ports of the two columns;

[0012] A lower cross beam, the two ends of the lower cross beam are respectively connected to the second connection ports of the two columns;

[0013] Wherein, the columns, the lower cross beam and the connecting beam are spiral steel pipes.

[0014] Further, a first rib plate is provided at each connection position between the upper cross beam / the lower cross beam and the column.

[0015] Further, the upper crossbeam is provided with:

[0016] a partition plate, the outer periphery of the partition plate is connected to the inner wall of the upper crossbeam;

[0017] a first rib plate, the first rib plate is arranged at the corresponding position of the first rib, the first rib plate is attached to the inner side wall of the upper crossbeam, one end of the first rib plate is connected to the partition plate, and the other end is connected to the upper crossbeam.

[0018] Further, a second rib plate is provided at the corresponding position of the first rib in the column / the lower crossbeam, and the outer periphery of the second rib plate is connected to the inner wall of the column / the lower crossbeam.

[0019] Further, a second rib is provided at the connection position between the connecting beam and the column, and a third rib plate is provided at the corresponding position of the second rib in the column / the connecting beam, and the outer periphery of the third rib plate is connected to the inner wall of the column / the connecting beam.

[0020] Further, the door frame for a container crane according to an embodiment of the second aspect of the present invention may further include:

[0021] two struts, the two struts are respectively arranged on both sides of the door frame assembly, and both ends of each strut are respectively connected to a first connection port of one column and a second connection port of another column.

[0022] Further, the lower crossbeam includes two connecting sections and an intermediate section arranged between the two connecting sections, a skew line is provided at one end of the connecting section, and the connecting section is connected to the column through the skew line.

[0023] Further, a lifting lug is further provided at the first connection port, and a fourth rib plate is provided at the corresponding position of the lifting lug in the column, and the outer periphery of the fourth rib plate is connected to the inner wall of the column.

[0024] Further, a process brace is provided at each connection position between the lower crossbeam / the connecting beam and the column.

[0025] According to a manufacturing method of a door frame for a container crane according to an embodiment of the second aspect of the present invention, which is applied to the door frame for a container crane described in any one of the above, the manufacturing method includes:

[0026] S1, pre-assemble two door frame assemblies;

[0027] S2, connect the two door frame assemblies through a connecting beam to obtain a left door frame and a right door frame;

[0028] S3, perform overall assembly on the left door frame and the right door frame.

[0029] At least one of the above technical solutions of the present invention has the following beneficial effects:

[0030] The door frame for a container crane according to an embodiment of the present invention includes a door frame assembly and a connecting beam. The door frame assembly includes columns, an upper cross beam, and a lower cross beam. Among them, the columns, the lower cross beam, and the connecting beam are spiral steel pipes. The steel members in the form of spiral steel pipes have the advantages of simple structure, light weight, and high strength. Compared with the traditional box-shaped door frame, the door frame for a container crane according to the embodiment of the present invention has the advantages of simple structure, small wheel pressure, and strong wind resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic structural diagram of the door frame assembly according to an embodiment of the present invention;

[0032] Figure 2 It is a schematic structural diagram of the connection between the column and the connecting beam of the door frame assembly according to an embodiment of the present invention;

[0033] Figure 3 It is a partial structural schematic diagram of the connection between the upper cross beam and the column according to an embodiment of the present invention;

[0034] Figure 4 It is a partial structural schematic diagram of the connection between the lower cross beam and the column according to an embodiment of the present invention;

[0035] Figure 5 It is a partial structural schematic diagram of the connection between the connecting beam and the column according to an embodiment of the present invention;

[0036] Figure 6 It is a schematic structural diagram of the second rib plate according to an embodiment of the present invention;

[0037] Figure 7 It is a schematic structural diagram of the connection between the connecting section of the lower cross beam and the column according to an embodiment of the present invention;

[0038] Figure 8 It is a schematic installation structure diagram of the lifting lug according to an embodiment of the present invention;

[0039] Figure 9 It is a schematic diagram of the general assembly process of the left and right door frames according to an embodiment of the present invention. Among them, (a) is a schematic diagram of hoisting the left door frame; (b) is a schematic diagram of installing the middle section; (c) is a schematic diagram of hoisting the right door frame.

[0040] Reference Signs:

[0041] 001. Door frame assembly; 100. Column; 110. First connection port; 120. Second connection port; 130. Lifting lug; 131. Fourth rib plate; 200. Upper cross beam; 300. Lower cross beam; 310. Connection section; 311. Intersecting line; 320. Intermediate section; 400. Tie beam; 500. Brace; 600. First rib plate; 610. Partition; 620. First rib; 630. Second rib; 700. Second rib plate; 710. Third rib; 800. Process brace. Detailed implementation mode

[0042] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention fall within the scope of protection of the present invention.

[0043] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the ordinary meanings understood by those of ordinary skill in the art to which the present invention pertains. The "first", "second" and similar terms used in the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, terms such as "a" or "one" do not denote a quantity limitation, but mean that there is at least one. The terms "connected" or "coupled" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right" and the like are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship also changes accordingly.

[0044] First, the door frame for a container crane according to the embodiments of the present invention will be specifically described below in conjunction with the attached Figures 1-9 drawings.

[0045] The door frame for a container crane according to the embodiments of the present invention includes two relatively arranged door frame assemblies 001 and two tie beams 400, and the two tie beams 400 are arranged between the two door frame assemblies 001. As Figure 1As shown, each door frame assembly 001 includes two columns 100, an upper cross beam 200 and a lower cross beam 300. At both ends of each column 100, a first connection port 110 and a second connection port 120 are respectively provided. Both ends of the upper cross beam 200 (not shown in the figure) are respectively connected to the first connection ports 110 of the two columns 100, and both ends of the lower cross beam 300 are respectively connected to the second connection ports 120 of the two columns 100. The left end and the right end of the lower cross beam 300 are respectively connected to the second connection ports 120 of the columns 100. Both ends of the connecting beam 400 are respectively connected to the two columns 100, as Figure 2 shown, the left end and the right end of the connecting beam 400 are respectively connected below the columns 100. Among them, the columns 100, the lower cross beam 300 and the connecting beam 400 are spiral steel pipes. The steel members in the form of spiral steel pipes have the advantages of simple structure, light weight and high strength. Compared with the traditional box-type door frame, the mechanical strength of the door frame is improved.

[0046] The door frame for a container crane according to the embodiment of the present invention is formed by connecting the columns 100, the lower cross beam 300 and the connecting beam 400 in the form of spiral steel pipes, and has the advantages of simple structure, small wheel pressure and strong wind resistance.

[0047] Further, according to some embodiments of the present invention, a first rib plate 600 is provided at each connection position between the upper cross beam 200 / the lower cross beam 300 and the column 100. That is to say, as Figure 1 shown, two first rib plates 600 are provided at the connection positions where both ends of the upper cross beam 200 (not shown in the figure) are respectively connected to the first connection ports 110 of the two columns 100 (corresponding to the Figure 1 upper ends), and two first rib plates 600 are provided at the connection positions where both ends of the lower cross beam 300 (corresponding to the Figure 1 left and right ends) are respectively connected to the second connection ports 120 of the two columns 100 (corresponding to the Figure 1 lower ends). The first rib plate 600 can improve the mechanical strength of the door frame assembly 001.

[0048] Further, a partition plate 610 and a first rib 620 are provided inside the upper cross beam 200. The outer periphery of the partition plate 610 is connected to the inner wall of the upper cross beam 200. The first rib 620 is provided at the corresponding position of the first rib plate 600. The first rib 620 is attached to the inner side wall of the upper cross beam 200. One end of the first rib 620 is connected to the partition plate 610, and the other end is connected to the upper cross beam 200. That is to say, the partition plate 610 can improve the mechanical strength of the upper cross beam 200. Specifically, as Figure 3As shown, the first rib plate 600 is connected between the upper crossbeam 200 and the column 100 to improve the connection stability between the upper crossbeam 200 and the column 100. And the first ribbed plate 620 is arranged inside the upper crossbeam 200 at the corresponding position of the first rib plate 600, which helps to disperse the mechanical stress at the first rib plate 600 to protect the first rib plate 600 and further improve the connection stability between the upper crossbeam 200 and the column 100. It should be noted that considering that the box-shaped upper crossbeam 200 is convenient for connecting the trolley mechanism, the upper crossbeam 200 is preferably a box-shaped steel member.

[0049] Furthermore, a second ribbed plate 630 is provided at the corresponding position of the column 100 / lower crossbeam 300 corresponding to the first rib plate 600, and the outer periphery of the second ribbed plate 630 is connected to the inner wall of the column 100 / lower crossbeam 300. That is to say, as Figure 4 shown, the first rib plate 600 is connected between the lower crossbeam 300 and the column 100 to improve the connection stability between the lower crossbeam 300 and the column 100. And the second ribbed plate 630 is arranged inside the lower crossbeam 300 and the column 100 at the corresponding position of the first rib plate 600. The second ribbed plate 630 helps to disperse the mechanical stress at the first rib plate 600 to further protect the first rib plate 600 and further improve the connection stability between the lower crossbeam 300 and the column 100.

[0050] It is worth noting that a second ribbed plate 630 (not shown in the figure) is also arranged inside the column 100 at the corresponding position of the first rib plate 600 where the upper crossbeam 200 is connected to the column 100 to further improve the connection stability between the upper crossbeam 200 and the column 100. That is to say, the first ribbed plate 620 is arranged inside the upper crossbeam 200 at the corresponding position of the first rib plate 600; the second ribbed plate 630 is arranged inside the first connection port 110, the second connection port 120 of the column 100 and the lower crossbeam 300 at the corresponding position of the first rib plate 600 to improve the mechanical strength of the door frame assembly 001 as much as possible.

[0051] Furthermore, according to some embodiments of the present invention, a second rib plate 700 is provided at the connection position between the connecting beam 400 and the column 100, and a third ribbed plate 710 is provided at the corresponding position of the column 100 / connecting beam 400 corresponding to the second rib plate 700, and the outer periphery of the third ribbed plate 710 is connected to the inner wall of the column 100 / connecting beam 400. That is to say, as Figure 2 shown, the second rib plate 700 is connected between the connecting beam 400 and the column 100 of the door frame assembly 001 to improve the connection stability between the connecting beam 400 and the door frame assembly 001. Preferably, as Figures 5-6As shown in the figure, a third rib plate 710 is provided inside the column 100 and inside the connecting beam 400 at the corresponding position of the second rib plate 700 to disperse the mechanical stress at the second rib plate 700, protect the second rib plate 700, improve the connection stability between the connecting beam 400 and the door frame assembly 001, and further improve the mechanical strength of the door frame.

[0052] Furthermore, the door frame for a container crane according to an embodiment of the present invention may further include two struts 500. The two struts 500 are respectively disposed on both sides of the door frame assembly 001, and both ends of each strut 500 are respectively connected to a first connection port 110 of a column 100 and a second connection port 120 of another column 100. That is to say, as Figure 2 shown, the struts 500 are disposed on the left and right sides of the door frame assembly 001, and one end of the strut 500 (corresponding to Figure 2 the lower left end) is connected to the second connection port 120 of the column 100 of the left door frame assembly 001, and the other end of the strut 500 (corresponding to Figure 2 the upper right end) is connected to the first connection port 110 of the column 100 of the right door frame assembly 001. The struts 500 connect the door frame assemblies 001 on both sides to further improve the mechanical strength of the door frame.

[0053] Furthermore, according to some embodiments of the present invention, the lower cross beam 300 includes two connection segments 310 and an intermediate segment 320 disposed between the two connection segments 310. A penetration line 311 is provided at one end of the connection segment 310, and the connection segment 310 is connected to the column 100 through the penetration line 311. That is to say, as Figure 7 shown, the lower cross beam 300 is formed by connecting two connection segments 310 and an intermediate segment 320. Among them, Figure 7 one end of the left connection segment 310 in Figure 7 the left end) is connected to the left column 100, Figure 7 the other end of the left connection segment 310 in Figure 7 the right end) is connected to the left end of the intermediate segment 320; Figure 7 one end of the right connection segment 310 in Figure 7 the right end) is connected to the right column 100, Figure 7 the other end of the right connection segment 310 in Figure 7 the left end) is connected to the right end of the intermediate segment 320. The segmented lower cross beam 300 is convenient for flexibly adjusting the allowance, and improves the installation convenience and manufacturing precision of the door frame.

[0054] Furthermore, a lifting lug 130 is further provided at the first connection port 110, and a fourth rib plate 131 is provided at a position corresponding to the lifting lug 130 inside the column 100. The outer periphery of the fourth rib plate 131 is connected to the inner wall of the column 100. That is to say, asFigure 8 As shown, a lifting lug 130 is provided at the first connection port 110 of the column 100 to facilitate the lifting of the left and right door frames. Preferably, a fourth rib plate 131 is provided inside the column 100 at the corresponding position of the lifting lug 130 to prevent the lifting lug 130 from being damaged due to excessive pulling force during lifting and improve the mechanical strength of the lifting lug 130.

[0055] Furthermore, a process brace 800 is provided at each connection position between the lower cross beam 300 / connection beam 400 and the column 100. That is, as Figures 4-5 shown, when the process brace 800 is provided at the connection position between the lower cross beam 300 / connection beam 400 and the column 100, the thermal stress generated during the welding connection between the lower cross beam 300 / connection beam 400 and the column 100 will tend to reduce the gauge of the door frame. The process brace 800 can reduce the angular deformation caused during the welding of the column 100 and the lower cross beam 300 / connection beam 400, and further improve the manufacturing accuracy of the door frame.

[0056] According to the manufacturing method of the door frame for a container crane according to the second aspect embodiment of the present invention, which is applied to the door frame for a container crane described in any one of the above, the manufacturing method of the door frame includes:

[0057] S1, pre-assemble two door frame assemblies 001;

[0058] S2, connect the two door frame assemblies 001 through the connection beam 400 to obtain the left door frame and the right door frame;

[0059] S3, perform the overall assembly of the left door frame and the right door frame.

[0060] Among them, step S1 includes: S11, pre-assemble the lower cross beam 300; S12, pre-assemble the upper cross beam 200 to the first connection port 110 of the column 100; S13, connect the connection section 310 of the lower cross beam 300 to the second connection port 120 of the column 100; S14, remove the upper cross beam 200 at the first connection port 110 and remove the middle section 320 of the lower cross beam 300.

[0061] Specifically, the manufacturing method of the door frame for a container crane according to the embodiment of the present invention is as follows:

[0062] S1, pre-assemble two door frame assemblies 001.

[0063] First, use a process support to pre-assemble the two connecting sections 310 and the middle section 320 of the lower crossbeam 300, and make the ends of the two connecting sections 310 with the intersecting lines 311 be free ends; then, assemble the assembled lower crossbeam 300 to the second connection port 120 of the column 100, and assemble the upper crossbeam 200 to the first connection port 110 of the column 100; utilize the trimming allowances of the column 100, the middle section 320 of the lower crossbeam 300, and the upper crossbeam 200 to correct the dimensions of the door frame assembly 001 and ensure the dimensional accuracy; weld the two connecting sections 310 of the lower crossbeam 300 to the second connection ports 120 of the two columns 100 respectively, and the welding method is preferably pouring welding; set a process brace 800 at the connection between the lower crossbeam 300 and the column 100, and then pour weld the first rib plate 600 at the connection position between the connecting section 310 and the column 100; remove the upper crossbeam 200 at the first connection port 110, and remove the middle section 320 of the lower crossbeam 300 to obtain four columns 100 connected with the connecting sections 310 of the lower crossbeam 300.

[0064] It should be noted that when manufacturing the column 100 and the lower crossbeam 300 in the workshop, the second rib plate 630 is spot-welded inside the connecting section 310 of the column 100 and the lower crossbeam 300. After the pouring welding of the first rib plate 600 is completed, the position of the second rib plate 630 is finely adjusted by aligning with the first rib plate 600, and finally the second rib plate 630 is pour-welded to further improve the connection stability between the lower crossbeam 300 and the column 100.

[0065] It should be added that when manufacturing the column 100, the lower crossbeam 300, and the upper crossbeam 200 in the workshop, pre-allowances for placing components are designed at both ends of the upper crossbeam 200, the first connection port 110 and the second connection port 120 of the column 100, and the pre-allowance for placing components at each end is 50 - 100 mm to ensure the door frame height; the intersecting line 311 at one end of the connecting section 310 of the lower crossbeam 300 is also processed in the workshop, and trimming allowances are designed at both ends of the middle section 320 of the lower crossbeam 300, and the trimming allowances at both ends are 50 - 100 mm to facilitate adjusting the door frame dimensions and ensure the accuracy. When pre-assembling the door frame assembly 001, first adjust the perpendicularity between the first connection port 110 of the column 100 and the upper crossbeam 200, assemble the process support and the guide plate, then closely fit the intersecting line 311 of the connecting section 310 with the column 100, trim the length allowance of the middle section 320 of the lower crossbeam 300 and pre-assemble the middle section 320 in place. After the dimensions are verified to be qualified, mark the center line in the height direction of the trolley support, assemble the process support to the butt joint position of the connecting section 310 of the lower crossbeam 300 and then pour weld, and pour weld the first rib plate 600 according to the drawing.

[0066] S2. Connect the two door frame assemblies 001 through the connecting beam 400 to obtain the left door frame and the right door frame.

[0067] First, place any two columns 100 connected with the connecting section 310 of the lower cross beam 300 horizontally, and place the connecting section 310 vertically upwards; fix the columns 100 by welding the card code on the frame to prevent the columns 100 from rolling; use the hand winch and the counterweight block to adjust and stabilize the connecting section 310 to ensure the verticality of the connecting section 310 and the columns 100; weld the two ends of a connecting beam 400 to the two columns 100 respectively to obtain the right door frame; then, place the other two columns 100 connected with the connecting section 310 of the lower cross beam 300 horizontally, and place the connecting section 310 vertically downwards, and use the self-weight of the connecting section 310 of the lower cross beam 300 to adjust and stabilize the verticality; weld the two ends of another connecting beam 400 to the two columns 100 respectively to obtain the left door frame. During this period, the verticality is remeasured and adjusted in real time. In fact, the left door frame is equipped with a door frame ladder platform system, and the connecting section 310 of the lower cross beam 300 needs to be placed vertically downward to allow the column 100 and the connecting beam 400 to be suspended in the air, so as to facilitate the installation of the ladder platform; finally, a process support 800 is set at the connection between the connecting beam 400 and the column 100, and then the second rib 700 is cast and welded.

[0068] Similarly, when manufacturing the column 100 and the connecting beam 400 in the workshop, the third rib plate 710 is spot welded inside the column 100 and the connecting section 310. After the second rib plate 700 is cast-welded, the position of the third rib plate 710 is fine-tuned by aligning the ribs with the second rib plate 700, and finally the third rib plate 710 is cast-welded to further improve the stability of the connection between the connecting beam 400 and the column 100.

[0069] S3, assemble the left and right door frames.

[0070] First, if Figure 9 As shown in (a), lift the left door frame to the trolley travel mechanism, adjust the position of the left door frame, and use the door frame guy rope to stabilize the left door frame; then, Figure 9 As shown in (b), the middle section 320 of the lower cross beam 300 is hoisted, the left end of the middle section 320 is assembled with the right end of the connecting section 310 on the left door frame, and the middle section 320 is supported and fixed by a tire frame; then, Figure 9 As shown in (c), the right door frame is hoisted, the right end of the middle section 320 is assembled with the left end of the connecting section 310 on the right door frame, and the right door frame is stabilized using a door frame guy rope. Finally, the door frame size is checked, and the two ends of the middle section 320 are respectively welded to the right end of the connecting section 310 on the left door frame and the left end of the connecting section 310 on the right door frame, and the first connecting port 110 of the upper beam 200 is welded to the column 100.

[0071] It should be noted that in step S1, two additional first rib plates 600 are welded at the connection position between the upper cross beam 200 and the column 100. As described above, the second rib plate 630 at the first connection port 110 of the column 100 is spot welded during workshop production. After the welding of the first rib plate 600 is completed, the second rib plate 630 at the first connection port 110 of the column 100 is welded, and the position of the first rib plate 620 is finely adjusted by aligning with the first rib plate 600, and finally the first rib plate 620 is welded to further improve the connection stability between the upper cross beam 200 and the column 100.

[0072] In addition, when the column 100 is produced in the workshop, the allowances for the shaft holes of the trolley walking connection bracket connected to the column 100 and the heavy plate allowance are not processed temporarily. During the general assembly of the left and right side door frames, they are machined to the required dimensions according to the final dimensions of each component in the door frame.

[0073] After the welding is completed, the strut 500 is welded according to the drawing dimensions, the door frame dimensions are rechecked, and the process strut 800 is removed.

[0074] The above is the preferred embodiment of the present invention. It should be pointed out that for those of ordinary skill in the art of this technology, without departing from the principle described in the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A doorframe for a container crane, characterized in that, including two oppositely arranged doorframe assemblies and two connecting beams arranged between the two doorframe assemblies; Each of the doorframe assemblies includes: two columns, with a first connection port and a second connection port respectively provided at both ends of each column, and both ends of the connecting beam are respectively connected to the two columns; an upper crossbeam, with both ends of the upper crossbeam respectively connected to the first connection ports of the two columns; a lower crossbeam, with both ends of the lower crossbeam respectively connected to the second connection ports of the two columns; wherein, the columns, the lower crossbeam and the connecting beam are spiral steel pipes; one first rib plate is respectively provided at the connection position between the upper crossbeam / the lower crossbeam and the column; a partition is provided inside the upper crossbeam, with the outer periphery of the partition connected to the inner wall of the upper crossbeam; a first rib plate is provided at the corresponding position of the first rib plate, the first rib plate is attached to the inner side wall of the upper crossbeam, one end of the first rib plate is connected to the partition, and the other end is connected to the upper crossbeam; one process brace is respectively provided at the connection position between the lower crossbeam / the connecting beam and the column.

2. The door frame for a container crane according to claim 1, characterized in that, a second rib plate is provided at the position corresponding to the first rib plate inside the column / the lower crossbeam, and the outer periphery of the second rib plate is connected to the inner wall of the column / the lower crossbeam.

3. The door frame for a container crane according to claim 1, characterized in that, a second rib plate is provided at the connection position between the connecting beam and the column, and a third rib plate is provided at the position corresponding to the second rib plate inside the column / the connecting beam, and the outer periphery of the third rib plate is connected to the inner wall of the column / the connecting beam.

4. The door frame for a container crane according to claim 1, characterized in that, It further includes: two struts, which are respectively arranged on both sides of the doorframe assembly, and both ends of each strut are respectively connected to the first connection port of one column and the second connection port of another column.

5. The door frame for a container crane according to claim 1, wherein The lower crossbeam includes two connecting sections and an intermediate section arranged between the two connecting sections, a phase intersection line is provided at one end of the connecting section, and the connecting section is connected to the column through the phase intersection line.

6. The door frame for a container crane according to claim 1, characterized in that, a lifting lug is further provided at the first connection port, and a fourth rib plate is provided at the position corresponding to the lifting lug inside the column, and the outer periphery of the fourth rib plate is connected to the inner wall of the column.

7. A manufacturing method of a door frame for a container crane, characterized in that, Applied to the doorframe for a container crane according to any one of claims 1-6, the manufacturing method includes: S1, pre-assembling two doorframe assemblies; S2, connecting the two doorframe assemblies through the connecting beam to obtain a left doorframe and a right doorframe; S3, assembling the left doorframe and the right doorframe together.

Images