An elevating quay crane and its assembling method

Abstract

The present invention provides a liftable quay crane and an assembly method thereof. The liftable quay crane includes a hoisting girder assembly; and a support frame, wherein the hoisting girder assembly is height-adjustably connected to the support frame. The liftable quay crane according to the embodiment of the present invention can adjust the height of the connection of the hoisting girder assembly to the support frame according to the height limit of the passing area, has strong applicability and stable structure. In addition, the assembly method of the liftable quay crane according to the embodiment of the present invention enables the liftable quay crane to be assembled conveniently, reliably and with high safety.

Description

Technical Field

[0001] The present invention relates to the technical field of port quay crane manufacturing, and particularly relates to a liftable quay crane and an assembly method thereof. Background Art

[0002] To ensure smooth passage through height-limited bridges and areas during transportation, the lifting gantry beam assembly of a quay crane is designed to be liftable. This liftable quay crane lifting gantry beam assembly and the column are connected by means of a flange perpendicular fit and bolts. During the manufacturing process, affected by manufacturing processes and cumulative errors, when the quay crane is assembled, the upper beam flange of the lifting gantry beam assembly does not fit with the column flange, there is an assembly gap, resulting in the inability to screw and assemble the product bolts. To correct the excessive assembly gap, the lifting gantry beam assembly needs to be hoisted to the ground. Depending on the excessive situation, the upper beam flange plate of the lifting gantry beam assembly is cut and reassembled or the vertical state of the column is corrected. However, these operation methods require many hoisting times, have a high detection difficulty, occupy a large area, and have high requirements for the placement of components. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a liftable quay crane and an assembly method thereof, so that the liftable quay crane has a stable and reliable structure and high assembly efficiency.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The liftable quay crane according to the first aspect embodiment of the present invention includes:

[0006] A lifting gantry beam assembly;

[0007] A support frame, and the lifting gantry beam assembly is connected to the support frame in a height-adjustable manner.

[0008] Further, the support frame includes four columns, and the columns are composed of multiple detachable sub-columns.

[0009] Further, on the inner sides of the tops of the four columns, there are pairwise opposite first flange surfaces. The lifting gantry beam assembly includes two cross beams, and the ends of the cross beams are provided with second flange surfaces corresponding to the first flange surfaces. The connection between the first flange surface and the second flange surface makes the cross beam and the column vertically connected.

[0010] Further, both the cross beam and the column are box girders.

[0011] Further, the first flange surface is provided with a notch, and the second flange surface is provided with a shear block corresponding to the notch. When the first flange surface is connected to the second flange surface, the shear block is embedded in the notch.

[0012] Further, circumferential inner bolt holes and outer bolt holes are respectively provided at the edges of the first flange surface and the second flange surface, and the first flange surface and the second flange surface are respectively connected by bolts passing through the inner bolt holes and the outer bolt holes.

[0013] According to the assembly method of the liftable quay crane according to the second aspect embodiment of the present invention, the following steps are included:

[0014] S1. Assemble the support frame;

[0015] S2. Move the assembled support frame to the general assembly position and tie and fix it;

[0016] S3. Hoist the lifting beam assembly in place by a lifting device and fix it to the support frame to complete the general assembly.

[0017] Further, the support frame includes four columns, and each column is composed of multiple detachable sub-columns. The step S1 includes:

[0018] S11. Select the corresponding number of the sub-columns according to the height limit requirement and assemble them into a single integral column;

[0019] S12. Connect the four columns to each other to complete the assembly of the support frame.

[0020] Further, on the inner sides of the tops of the four columns, there are first flange surfaces opposite to each other in pairs. The lifting beam assembly includes two cross beams, and at the ends of the cross beams, there are second flange surfaces corresponding to the first flange surfaces. There are notches on the first flange surfaces, and shear-resistant blocks corresponding to the notches are provided on the second flange surfaces. Circumferential inner bolt holes and outer bolt holes are respectively provided at the edges of the first flange surface and the second flange surface. The step 3 includes:

[0021] S31. Hoist the lifting beam assembly in place, move the second flange surface to embed the shear-resistant block into the notch, so that the first flange surface and the second flange surface are aligned and closely attached;

[0022] S32. Pass through and position the corresponding inner bolt holes at the four corners of the first flange surface and the second flange surface from inside the column through a dowel pin;

[0023] S33. After adjusting the gap between the first flange surface and the second flange surface, connect and fix them to complete the general assembly.

[0024] Further, the step S33 includes:

[0025] Install an operation workbench on the top of the support frame;

[0026] Based on the operation workbench, measure the circumferential clearance between the first flange surface and the second flange surface;

[0027] Select a process bolt with a suitable length according to the size of the measured clearance, and pass the process bolt through the corresponding inner bolt holes between the first flange surface and the second flange surface from inside the column. After passing, remove the pilot pin and pass the process bolt through the inner bolt holes at this place;

[0028] Start screwing from the process bolt at the maximum clearance between the inner bolt holes, and continue to screw until it cannot be screwed any further, then move to the next process bolt and continue to screw. Cycle in a clockwise or counterclockwise direction until the clearance between the inner bolt holes is eliminated;

[0029] Detect the clearance between the first flange surface and the second flange surface. After passing the detection, install high-strength bolts on the outer bolt holes between the first flange surface and the second flange surface;

[0030] After installing the high-strength bolts on the outer bolt holes, remove the process bolts on the inner bolt holes and replace them with high-strength bolts one by one to complete the general assembly.

[0031] At least one of the above technical solutions of the present invention has the following beneficial effects:

[0032] The liftable quay crane according to the embodiment of the present invention includes a lifting girder assembly and a support frame, and can adjust the height of the connection between the lifting girder assembly and the support frame according to the height limit of the passing area, with strong applicability and stable structure.

[0033] The assembly method of the liftable quay crane according to the embodiment of the present invention makes the assembly of the liftable quay crane convenient, reliable and highly safe. Description of the Drawings

[0034] Figure 1 It is a schematic structural diagram of the liftable quay crane according to the first aspect embodiment of the present invention;

[0035] Figure 2 It is a schematic diagram of the butt joint positioning of the first flange surface and the second flange surface in the assembly method of the liftable quay crane according to the second embodiment of the present invention;

[0036] Figure 3 It is a schematic diagram of the first assembly clearance detection in the assembly method of the liftable quay crane according to the second embodiment of the present invention;

[0037] Figure 4 It is a schematic diagram of installing bolts in the inner bolt holes in the assembly method of the liftable quay crane according to the second embodiment of the present invention;

[0038] Figure 5 For Figure 4 the A-direction view in

[0039] Figure 6 This is a schematic diagram of the installation of the working platform in the assembly method of the liftable quay crane according to the second embodiment of the present invention;

[0040] Figure 7 This is a schematic diagram of the adjustment of the assembly gap in the assembly method of the liftable quay crane according to the second embodiment of the present invention;

[0041] Figure 8 This is a schematic diagram showing that the assembly gap adjustment is qualified in the assembly method of the liftable quay crane according to the second embodiment of the present invention.

[0042] Reference numerals: 100. Lifting girder assembly; 110. Cross beam; 120. Second flange surface; 121. Shear block; 200. Support frame; 210. Column; 220. First flange surface; 221. Notch;

[0043] 300. Inner bolt hole; 400. Outer bolt hole;

[0044] 500. Guide pin;

[0045] 600. Gap gauge;

[0046] 700. Working platform; Detailed implementation manners

[0047] 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.

[0048] 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. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationships will also change accordingly.

[0049] Next, a liftable quay crane according to an embodiment of the present invention will be specifically described with reference to the accompanying drawings.

[0050] As Figure 1 shown, the liftable quay crane according to the first aspect embodiment of the present invention includes: a main lifting beam assembly 100 and a support frame 200.

[0051] Among them, the main lifting beam assembly 100 is height-adjustably connected to the support frame 200.

[0052] That is to say, the liftable quay crane according to the embodiment of the present invention is composed of the main lifting beam assembly 100 and the support frame 200. The main lifting beam assembly 100 can adjust the suitable height to be connected to the support frame 200, so that the quay crane can smoothly pass through the height-limited bridges and areas during transportation. The structure is simple and reliable, easy to implement, and has strong applicability.

[0053] In some embodiments, as Figure 1 shown, the support frame 200 may include four columns 210, and the columns 210 are composed of multiple sections of sub-columns that are detachably connected.

[0054] That is to say, the support frame 200 is assembled by the columns 210 at the four corners, and each column 210 is composed of multiple sections of detachably connected sub-columns. This is to adaptively select the number of sections of the sub-columns to assemble into columns 210 with appropriate heights according to the heights of the height-limited bridges and areas, so that the main lifting beam assembly 100 can smoothly pass through the height limit. In other words, the designed columns 210 are convenient to disassemble and assemble, and have strong assembly applicability.

[0055] Furthermore, as Figure 2 shown, the inner sides of the tops of the four columns 210 are provided with pairwise opposite first flange surfaces 220. The main lifting beam assembly 100 includes two cross beams 110, and the ends of the cross beams 110 are provided with second flange surfaces 120 corresponding to the first flange surfaces 220. The connection between the first flange surface 220 and the second flange surface 120 makes the cross beam 110 vertically connected to the column 210.

[0056] That is to say, the main lifting beam assembly 100 is connected to the first flange surfaces 220 on the inner sides of the tops of the four columns 210 through the second flange surfaces 120 at the ends of its two cross beams 110, so that the cross beam 110 and the column 210 are vertically fixed. In other words, the cross beam 110 of the main lifting beam assembly 100 is connected between the tops of the columns 210, and thus decreases as the set height of the column 210 decreases, so as to smoothly pass through the corresponding height-limited area.

[0057] Furthermore, both the cross beam 110 and the column 210 are box beams.

[0058] Specifically, the crossbeam 110 and the column 210 are set as box girders, so that the structural connection is stable and reliable during the assembly of the quay crane and has strong bearing capacity.

[0059] In some embodiments, as Figure 2 shown, a notch 221 is provided on the first flange surface 220, and a shear-resistant block 121 corresponding to the notch 221 is provided on the second flange surface 120. When the first flange surface 220 is connected to the second flange surface 120, the shear-resistant block 121 is embedded in the notch 221.

[0060] Specifically, a notch 221 is provided on the first flange surface 220, and a corresponding shear-resistant block 121 is provided on the second flange surface 120, so that when the first flange surface 220 is connected to the second flange surface 120, the shear-resistant block 121 is embedded in the notch 221, thereby enabling the first flange surface 220 and the second flange surface 120 to be accurately butted.

[0061] In some embodiments, circumferential inner bolt holes 300 and outer bolt holes 400 are respectively provided at the edges of the first flange surface 220 and the second flange surface 120, and the first flange surface 220 and the second flange surface 120 are respectively connected by bolts passing through the inner bolt holes 300 and the outer bolt holes 400.

[0062] Specifically, a circle of inner bolt holes 300 and outer bolt holes 400 are respectively provided on the inner and outer sides of the walls of the crossbeam 110 and the column 210 of the box girder at the edges of the first flange surface 220 and the second flange surface 120, so that when the first flange surface 220 is connected to the second flange surface 120, the inner and outer sides of the first flange surface 220 and the second flange surface 120 are simultaneously fixed, thereby improving the tightness and reliability of the connection.

[0063] According to the assembly method of the liftable quay crane according to the second aspect embodiment of the present invention, the following steps are included:

[0064] S1. Assemble the support frame 200;

[0065] S2. Move the assembled support frame to the general assembly position and tie and fix it;

[0066] S3. Hoist the main girder assembly in place by a lifting device and fix it to the support frame to complete the general assembly.

[0067] That is to say, when assembling the liftable quay crane, first assemble the support frame 200. After the support frame 200 is assembled, it is transported to the general assembly position and fixed. Then, the main girder assembly 100 is hoisted above the support frame 200 by a lifting device and fixed to the support frame 200 to complete the assembly. According to the assembly method of the liftable quay crane according to the embodiment of the present invention, the assembly is convenient, reliable, and has high safety.

[0068] According to some embodiments of the present invention, the support frame 200 may include four columns 210, and the columns 210 are composed of multiple sections of sub-columns that are detachably connected. Step S1 may include:

[0069] S11. Select the corresponding number of sub-columns according to the height limit requirement and assemble them into a single integral column 210;

[0070] S12. Connect the four columns 210 to each other to complete the assembly of the support frame 200.

[0071] That is to say, when pre-assembling the support frame 200, first compare the height requirement of the height-limited area, then select the appropriate number of sub-columns to assemble into a column 210 with an appropriate height, and finally assemble and fix the four assembled columns 210 to form the support frame 200.

[0072] According to some embodiments of the present invention, pairwise opposite first flange surfaces 220 are provided on the inner sides of the tops of the four columns 210. The lifting beam assembly 100 includes two cross beams 110. Second flange surfaces 120 corresponding to the first flange surfaces 220 are provided at the ends of the cross beams 110. A notch 221 is provided on the first flange surface 220, and a shear-resistant block 121 corresponding to the notch 221 is provided on the second flange surface 120. Circumferential inner side bolt holes 300 and outer side bolt holes 400 are respectively provided at the edges of the first flange surface 220 and the second flange surface 120. Step 3 includes:

[0073] S31. Lift the lifting beam assembly 100 into place, move the second flange surface 120 to embed the shear-resistant block 121 into the notch 221 so that the first flange surface 220 and the second flange surface 120 are aligned and closely attached;

[0074] S32. Pass through and position the corresponding inner side bolt holes 300 at the four corners of the first flange surface 220 and the second flange surface 120 from inside the column 210 through a dowel pin;

[0075] S33. After adjusting the gap between the first flange surface 220 and the second flange surface 120, connect and fix them to complete the general assembly.

[0076] Specifically, as Figure 2As shown, when fixing the lifting beam assembly 100 to the column 210, that is, when fixing the first flange surface 220 to the second flange surface 120, first, the notch 221 provided on the first flange surface 220 is docked with the shear block 121 on the second flange surface 120 to achieve precise alignment of the first flange surface 220 and the second flange surface 120; secondly, a dowel pin 500 is inserted through the inner bolt holes 300 at the four corners of the docked first flange surface 220 and second flange surface 120 from inside the column 210 to achieve further positioning, and then the gap between the first flange surface 220 and the second flange surface 120 is adjusted, and finally the connection is fixed to complete the general assembly.

[0077] That is to say, before fixing the first flange surface 220 to the second flange surface 120, precise positioning of the first flange surface 220 and the second flange surface 120 is also achieved through the matching of the shear block 121 on the second flange surface 120 and the notch 221 on the first flange surface 220, and by inserting dowel pins 500 at the four corners of the inner bolt holes 300, so as to ensure the accuracy when the first flange surface 220 is connected to the second flange surface 120.

[0078] According to some embodiments of the present invention, step S33 may include:

[0079] Install an operation workbench 700 on the top of the support frame 200;

[0080] Based on the operation workbench 700, measure the circumferential gap between the first flange surface 220 and the second flange surface 120;

[0081] Select a process bolt with a suitable length according to the size of the measured gap, insert the process bolt through the corresponding inner bolt holes 300 between the first flange surface 220 and the second flange surface 120 from inside the column, and after insertion, remove the dowel pin and insert the process bolt through the inner bolt holes 300 at this place;

[0082] Start screwing the process bolt at the largest gap between the inner bolt holes 300 until it cannot be screwed anymore, then move to the next process bolt and continue to screw, and cycle in a clockwise or counterclockwise direction until the gap between the inner bolt holes 300 is eliminated;

[0083] Detect the gap between the first flange surface 220 and the second flange surface 120, and after passing the detection, install high-strength bolts on the outer bolt holes 400 between the first flange surface 220 and the second flange surface 120;

[0084] After installing the high-strength bolts on the outer bolt holes 400, remove the process bolts on the inner bolt holes 300 and replace them with high-strength bolts one by one to complete the general assembly.

[0085] Specifically, when fixing the first flange surface 220 and the second flange surface 120, it is also necessary to adjust the gap therebetween.

[0086] First, as Figure 6 shown, install the operation workbench 700 on the top of the support frame 200, that is, set the operation workbench 700 around the installation of the flange surface to facilitate the fixing operation.

[0087] Second, as Figure 3 shown, use the gap gauge 600 on the operation workbench 700 to measure the gap around the connection surface of the first flange surface 220 and the second flange surface 120.

[0088] Third, according to the size of the measured gap, select process bolts with appropriate lengths for pre-tightening connection between the corresponding inner bolt holes 300 on the first flange surface 220 and the second flange surface 120, as Figure 4 、 5 shown. For example, the gap in the figure gradually increases from bottom to top, so the lengths of the selected process bolts for connection change from short to long.

[0089] Fourth, as Figure 7 shown, start screwing the process bolt at the maximum gap until it cannot be screwed anymore, and cycle in the clockwise or counterclockwise direction to screw the process bolts on the inner bolt holes 300 in turn until the gap between the inner bolt holes 300 is eliminated.

[0090] Finally, as Figure 8 shown, based on the operation workbench 700, use the gap gauge 600 again to detect the assembly gap between the first flange surface 220 and the second flange surface 120. After passing the inspection, install high-strength bolts on the outer bolt holes 400 in turn. After all the outer bolt holes 400 are installed and connected, enter the column 210 and then remove the process bolts on the inner bolt holes 300 one by one and replace them with high-strength bolts one by one. After replacing the high-strength bolts on the inner bolt holes 300, the connection between the first flange surface 220 and the second flange surface 120 is completed, that is, the assembly of the liftable quay crane is completed.

[0091] According to the assembly method of the liftable quay crane according to the embodiment of the present invention, accurate docking between the assembly components can be realized, and the adjustment of the assembly gap can be efficiently realized, thereby greatly improving the assembly efficiency and installation quality of the quay crane equipment.

[0092] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, 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. An assembling method of a liftable quay crane, characterized in that, The lifting beam assembly of the liftable quay crane is height-adjustably connected to the support frame, and the support frame includes four columns, and the columns are composed of multiple split columns that are detachably connected. The inner sides of the tops of the four columns are provided with first flange surfaces that face each other in pairs. The lifting beam assembly includes two cross beams, and the ends of the cross beams are provided with second flange surfaces corresponding to the first flange surfaces. A notch is provided on the first flange surface, and a shear-resistant block corresponding to the notch is provided on the second flange surface. Inner circumferential bolt holes and outer circumferential bolt holes are respectively provided at the edges of the first flange surface and the second flange surface. The assembly method includes the following steps: S1. Assemble the support frame; S2. Move the assembled support frame to the general assembly position and tie it down for fixation; S3. Hoist the lifting beam assembly in place by a lifting device and fix it to the support frame to complete the general assembly; S3 includes: S31. Hoist the lifting beam assembly in place, move the second flange surface to embed the shear-resistant block into the notch so that the first flange surface and the second flange surface are aligned and closely attached; S32. Pass through and position the corresponding inner bolt holes at the four corners of the first flange surface and the second flange surface from inside the column by a pilot pin; S33. After adjusting the gap between the first flange surface and the second flange surface and connecting and fixing them, complete the general assembly; S33 includes: Install an operation workbench on the top of the support frame; Based on the operation workbench, measure the circumferential gap between the first flange surface and the second flange surface; Select process bolts of appropriate length according to the measured gap, pass through the process bolts through the corresponding inner bolt holes between the first flange surface and the second flange surface from inside the column. After passing through, remove the pilot pin and pass through the process bolts through the inner bolt holes at this place; Start screwing the process bolts at the largest gap between the inner bolt holes until it cannot be screwed any further, then move to the next process bolt and continue screwing. Cycle in this way in the clockwise or counterclockwise direction until the gap between the inner bolt holes is eliminated; Detect the gap between the first flange surface and the second flange surface. After passing the detection, install high-strength bolts on the outer bolt holes between the first flange surface and the second flange surface; After installing the high-strength bolts on the outer bolt holes, remove the process bolts on the inner bolt holes and replace them with high-strength bolts one by one to complete the general assembly.

2. The assembling method of the liftable quay crane according to claim 1, characterized in that S1 includes: S11. According to the height limit requirement, select the corresponding number of split columns for assembly to form a single integral column; S12. Connect the four columns to each other to complete the assembly of the support frame.

3. The assembly method according to claim 1, characterized in that, Both the cross beam and the column are box girders.

Images