Installation method of quay crane machine room

Abstract

The invention provides an installation method of a quay crane machine room. The mounting method of the quay crane machine room comprises the steps that a first machine room support and a second machine room support are manufactured, lineation is conducted on the manufactured first machine room support and the manufactured second machine room support, and margins on panels of the first machine room support and the second machine room support are machined; scribing the flange plate welded on the chassis of the machine room, and processing the thickness allowance of the flange plate; overall scribing is conducted on the machine room chassis, and connecting bolt hole groups are machined; positioning and pre-welding the first machine room support and the second machine room support on the rear girder under the condition that the sand paint of the rear girder of the quay crane is not washed; and the machine room is hoisted to the first machine room support and the second machine room support which are pre-welded to the rear girder, and a machine room chassis is connected with the first machine room support. According to the mounting method, fire operation after painting can be avoided.

Description

Technical Field

[0001] The present invention relates to a quay crane machine room, and particularly to an installation method for a quay crane machine room. Background Art

[0002] In the field of quay crane engineering in port machinery, the machine room is a dedicated space or room for accommodating and protecting the electrical equipment, control systems, and other auxiliary equipment of the crane, and is located above the rear girder. As one of the core components, the fabrication and installation quality of the machine room supports is directly related to the operating stability and safety of the entire quay crane.

[0003] In the traditional machine room installation method, after the paint of the rear girder is completed, each machine room support is first assembled and connected to the machine room by bolts. After the connection is completed, the machine room support is hoisted onto the rear girder together with the machine room, and finally the machine room support is adjusted and welded in place with the rear girder.

[0004] However, using the above installation method, on the one hand, it causes the welding of the machine room support and the rear girder to be a fire operation after painting, resulting in the damage of the paint on the rear girder due to welding, and it is necessary to grind and re-do partial paint. On the other hand, it will cause rectification phenomena such as misalignment of the ribs between the machine room support and the rear girder, excessive clearance between the machine room support and the machine room chassis, and excessive clearance between the machine room support and the rear girder panel, affecting the overall assembly cycle of the project and becoming a bottleneck restricting the efficient progress and quality improvement of the project. Summary of the Invention

[0005] The purpose of the present invention is to provide an installation method for a quay crane machine room, which can avoid fire operations after painting.

[0006] The present invention provides an installation method for a quay crane machine room, including: fabricating a first machine room support and a second machine room support, respectively marking the fabricated first machine room support and second machine room support, and machining the surplus on their panels; marking the flange plate welded to the machine room chassis, and machining its thickness surplus; marking the entire machine room chassis, and machining the connecting bolt hole group; positioning and pre-welding the first machine room support and the second machine room support on the rear girder of the quay crane in the state where the rear girder is not sandblasted and painted, and installing a shock absorption device on the second machine room support; hoisting the machine room onto the first machine room support and the second machine room support that have been pre-welded on the rear girder, and connecting the machine room chassis to the first machine room support.

[0007] In one embodiment, the fabricating the first machine room support and the second machine room support, respectively marking the fabricated first machine room support and second machine room support, and machining the surplus on their panels includes: fabricating the first machine room support, separately marking the first machine room support, and machining the surplus on its panel; marking the center line of the first machine room support, using a center punch to make punch marks on the thick side of its panel as the center punch marks; taking the center punch marks of the first machine room support as the reference, and machining the bolt hole group.

[0008] In one embodiment, the manufacturing of the first machine room support and the second machine room support, marking the manufactured first machine room support and the second machine room support respectively, and processing the margins on the panels of the two, also includes: manufacturing the second machine room support, marking the second machine room support separately, and processing the margins on its panel; marking the center line of the second machine room support, and using a sample punch to punch a hole mark on the plate thickness side of its panel as a center punch mark; and processing the bolt hole based on the center punch mark of the second machine room support.

[0009] In one embodiment, the flange plate welded to the machine room chassis is marked and its thickness margin is processed, including: turning over and welding the machine room chassis a second time; turning the reverse side of the machine room chassis upward, correcting the horizontality of the main beam of the machine room chassis and re-measuring; marking the flange plate at the connection position of the machine room corresponding to the machine room support, and machining the thickness margin of the flange plate.

[0010] In one embodiment, the overall marking of the machine room chassis and the processing of the connecting bolt hole group include: marking the cross center line of the machine room chassis and the machine room support installation on the rear beam of the quay crane; adjusting and spot welding the process drill template to the corresponding position of the machine room chassis so that the center line of the process drill template and the cross center line of the machine room chassis completely coincide with each other; using the process drill template to drill the connecting bolt hole group on the machine room chassis; removing the process drill template and grinding the machine room chassis.

[0011] In one embodiment, the overall marking of the machine room chassis and processing of the connecting bolt hole groups also includes: re-measuring the bolt-related hole spacing dimensions on the left and right sides and the sea and land sides of the machine room chassis.

[0012] In one embodiment, the first machine room support and the second machine room support are positioned and pre-welded on the rear beam of the quay crane before sandblasting and painting, including: positioning the sea and land side dimensions of the first machine room support on the rear beam based on the center line of the land side upper beam; after the first machine room support is positioned, the sea and land side dimensions of the second machine room support are positioned using the center line of its rib plate according to the blueprint size requirements.

[0013] In one embodiment, the positioning and pre-welding of the first machine room support and the second machine room support on the rear beam of the quay crane before sandblasting and painting also includes: re-measuring the matching degree of the left and right sides and the sea and land sides of the connecting bolt hole group of the machine room chassis with the dimensions of the corresponding directions on the first machine room support; symmetrically and synchronously welding the inner and outer webs of the first machine room support and each second machine room support on the rear beam; using a spirit level to check the level of the machine room support, and if it is out of tolerance, adjusting it by adjusting the thickness of the pad.

[0014] In one embodiment, before hoisting the machine room onto the first machine room support and the second machine room support pre-welded on the rear girder and connecting the machine room chassis to the first machine room support, the following steps are further included: sandblasting and painting the rear girder; after the sandblasting and painting of the rear girder are completed, installing shock-absorbing devices on the second machine room support.

[0015] In one embodiment, hoisting the machine room onto the first machine room support and the second machine room support pre-welded on the rear girder and connecting the machine room chassis to the first machine room support includes: reinspecting the camber of the rear girder and the open dimension of the bearing rail beam to ensure that the rear girder is in a qualified state; arranging a bolster under the machine room installation position of the rear girder.

[0016] In one embodiment, hoisting the machine room onto the first machine room support and the second machine room support pre-welded on the rear girder and connecting the machine room chassis to the first machine room support further includes: hoisting the machine room, adjusting the position of the machine room in the sea-land direction, the left-right direction and the relative parallelism between the machine room and the rear girder by using a chain block; positioning the bolt holes of the flange plate of the machine room chassis and the first machine room support by using a dowel pin; connecting the machine room chassis and the first machine room support; inspecting the mating surface of the shock-absorbing devices on the machine room chassis and the second machine room support.

[0017] The installation method of the quay crane machine room of the present invention realizes the first pre-welding of the machine room supports of the port machinery quay crane by scribing and machining the machine room supports, performing overall machining after welding on the flange plates at the connection positions of the machine room chassis, and pre-welding the first machine room support and the second machine room support onto the unpainted girder in advance, avoiding the problem of damage to the paint on the rear girder caused by hot work after painting, reducing the gap between the machine room support and the machine room chassis and the gap between the machine room support and the rear girder, avoiding the misalignment of the ribs between the machine room support and the rear girder, improving the installation quality of the machine room, and shortening the total assembly cycle of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other features, properties and advantages of the present invention will become more apparent from the following description in conjunction with the drawings and embodiments, wherein:

[0019] Figure 1 is a schematic flow chart of an embodiment of the installation method of the quay crane machine room according to the present invention;

[0020] Figure 2 is a schematic structural diagram of the first machine room support and the second machine room support according to the present invention;

[0021] Figure 3 is a schematic diagram of the allowance machining of the first machine room support and the second machine room support according to the present invention;

[0022] Figure 4It is a schematic diagram of the center punch marks of the first machine room support or the second machine room support;

[0023] Figure 5 It is a schematic diagram of the distribution state of pre-welding the first machine room support and the second machine room support according to the present invention on the rear girder;

[0024] Figure 6 It is a schematic diagram before the assembly of the machine room and the second machine room support according to the present invention;

[0025] Figure 7 It is a schematic diagram after the assembly of the machine room and the second machine room support according to the present invention;

[0026] Figure 8 It is a schematic diagram after the assembly of the machine room and the first machine room support according to the present invention;

[0027] Figure 9 It is a schematic diagram of the jig set on the rear girder before and after the hoisting of the machine room;

[0028] Figure 10 It is Figure 9 The sectional view taken along B-B in Detailed implementation manners

[0029] Now, reference will be made in detail to the embodiments of the present invention, one or more examples of which are shown in the drawings. Each example is provided to explain the present invention, not to limit the present invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the scope or spirit of the present invention. For example, features shown or described as part of one embodiment can be used with another embodiment to yield yet another embodiment. Accordingly, the present invention is intended to cover these modifications and variations that fall within the scope of the appended claims and their equivalents.

[0030] The term "hot work after painting" refers to operations such as welding, cutting, and grinding on the metal surface that has been coated with paint or coating and may generate open flames, sparks, or high temperatures. The welding of the machine room support and the rear girder before improvement is hot work after painting, which has relatively high safety risks and affects the welding quality.

[0031] Figure 1 An embodiment of the installation method of the quay crane machine room of the present invention is shown. As Figure 1 shown, the installation method of the quay crane machine room of the present invention includes steps S100 to S500:

[0032] In step S100, the first machine room support and the second machine room support are manufactured, and the manufactured first machine room support and the second machine room support are respectively marked, and the surplus on the panels of both is processed.

[0033] In step S200, mark the flange plate welded to the machine room chassis and machine-process the thickness allowance thereof.

[0034] In step S300, mark the entire machine room chassis and machine-process the connection bolt hole group.

[0035] In step S400, position and pre-weld the first machine room support and the second machine room support on the rear girder of the quay crane in the state where the rear girder of the quay crane is not sandblasted and painted.

[0036] In step S500, hoist the machine room onto the first machine room support and the second machine room support that have been pre-welded to the rear girder, and connect the machine room chassis to the first machine room support.

[0037] The installation method of the machine room of the quay crane of the present invention realizes the first pre-welding of the machine room support of the quay crane of the port machinery by marking and processing the machine room support, performing overall machining after welding on the flange plate at the support connection position of the machine room chassis, and pre-welding the first machine room support and the second machine room support to the unpainted girder in advance, avoiding the problem of damage to the paint on the rear girder caused by hot work after painting, reducing the gap between the machine room support and the machine room chassis and the gap between the machine room support and the rear girder, avoiding the misalignment of the ribs between the machine room support and the rear girder, improving the installation quality of the machine room, and shortening the total assembly cycle of the project.

[0038] In an embodiment, the machine room support specifically includes a first machine room support 10 and a second machine room support 20. Among them, the first machine room support 10 is a bolt-type machine room support, which is fixed to the machine room through bolts; the second machine room support 20 is a floating machine room support, which is not connected to the machine room through bolts, but is attached to the machine room chassis through a shock absorption device.

[0039] In this embodiment, step S100 further includes steps S110 to S160:

[0040] In step S110, manufacture the first machine room support 10, mark the first machine room support 10 separately, and machine-process the allowance on its panel. Among them, the structure of the first machine room support 10 is as Figure 2 shown. The first machine room support 10 includes a first panel 11 and a rib plate 12. Waist-shaped bolt hole groups 13 are provided on the first panel 11 for connecting to the machine room. After machining, the first panel 11 is connected to the first backing plate 14 through bolts. The first backing plate 14 is a common backing plate, which is assembled with the first machine room support 10 and does not move or hoist with the machine room chassis.

[0041] Figure 3 Shows the schematic diagram of the allowance machining of the first machine room support 10. As Figure 3As shown, the allowance of the first panel 11 of the first machine room support 10 is 4 mm, and the thickness of the first panel 11 after allowance machining is 30 mm. The roughness of the first panel 11 of the first machine room support 10 after allowance machining is reduced.

[0042] In step S120, the center line a of the first machine room support 10 is marked, and a center punch mark is made on the plate thickness side of its first panel 11 using a center punch. The center line a of the first machine room support 10 is as Figures 2 to 4 shown. The plate thickness side of the first panel 11 is Figure 4 the side of the first panel 11 shown.

[0043] In step S130, taking the center punch mark of the first machine room support 10 as a reference, the bolt hole group 13 is machined.

[0044] The first backing plate 14 is installed on the machined first panel 11 of the first machine room support 10. Bolts can pass through the bolt hole group 13, the bolt holes of the first backing plate 14, and the connecting bolt hole group on the machine room chassis, thereby connecting the machine room and the first machine room support 10.

[0045] As Figure 2 shown in the partial enlarged view, the allowable deviation of the waist-shaped bolt hole group 13 is 30 mm. There are two first machine room supports 10, which are respectively installed on the rear girders on the left and right sides. Due to the design of the bolt hole group 13, the tolerance of the aperture of the bolt hole group 13 on the sea-land side is very small, only 1.5 mm. Therefore, whether the connecting bolt hole group of the bolt hole group 13 of the first machine room support 10 can be successfully matched with the corresponding connecting flange position on the machine room chassis and the dowel pin (where the dowel pin can be understood as the screw rod of the bolt and is used for positioning) can be inserted smoothly determines whether the machine room is successfully hoisted.

[0046] In step S140, the second machine room support 20 is manufactured, and the second machine room support 20 is separately marked and the allowance on its panel is machined. Among them, the structure of the second machine room support 20 is as Figure 2 shown. The second machine room support 20 includes a second panel 21, and a plurality of bolt holes 22 are opened on the second panel 21 for connecting with the damping device.

[0047] Figure 3 shows the allowance machining schematic diagram of the second machine room support 20. As Figure 3 shown, the allowance of the second panel 21 of the second machine room support 20 is 4 mm, the thickness of the second panel 21 after machining is 30 mm, and the roughness of the second panel 21 of the second machine room support 20 after machining is reduced.

[0048] In step S150, the center line b of the second machine room support 20 is marked, and punch marks are made on the side of the second panel 21 with a center punch on the side with the plate thickness as the center punch mark. The center line b of the second machine room support 20 is as shown in Figures 2 to 4 . The side with the plate thickness of the second panel 21 is the side of the second panel 21 shown in Figure 4 .

[0049] In step S160, the bolt holes 22 are machined with reference to the center punch mark of the second machine room support 20.

[0050] On the second panel 21 of the machined second machine room support 20, a second backing plate 23 and a shock absorption device are installed. Bolts can pass through the bolt holes 22, the openings on the second backing plate 23, and the openings on the shock absorption device, and then be connected to the shock absorption device. Among them, the shock absorption device can be selected as the finished vibration damping pad produced by Fabreeka Company, which can be simply referred to as the Fabreeka component.

[0051] Refer to Figure 6 and Figure 7 . The shock absorption device includes an upper cushion block 33 and a lower component 24. After the machine room and the rear girder 1 are respectively painted, the upper cushion block 33 is installed at the corresponding position of the machine room chassis, and the lower component 24 is installed on the second machine room support 20 pre-welded to the rear girder 1.

[0052] Figure 5 shows a schematic diagram of the distribution state of the pre-welding of the first machine room support 10 and the second machine room support 20 on the rear girder 1. In the embodiment shown in Figure 5 , the rear girder 1 includes a rear girder left beam and a rear girder right beam symmetrically arranged therewith. The number of the first machine room supports 10 is one group, a total of two; the number of the second machine room supports 20 is three groups, a total of six. It can be understood that in the traditional machine room installation method, hole groups are provided on all machine room supports, so the pre-welding of the machine room supports cannot be realized. In contrast, the combination of the first machine room support 10 and the second machine room support 20 is more conducive to promoting the successful pre-welding of the overall four groups of machine room supports, and the shock absorption device reduces or replaces the design of the traditional hole groups of the machine room supports.

[0053] In addition, the execution order between steps S110 to S130 and S140 to S160 can be changed, that is, S140 to S160 can be executed first, and then S110 to S130, not limited to the order of the step numbers.

[0054] In one embodiment, step S200 further includes steps S210 to S230:

[0055] In step S210, the machine room chassis 31 is turned over for secondary pouring and welding.

[0056] In step S220, turn the reverse side of the machine room chassis 31 upwards, correct the horizontal of the main beam of the machine room chassis 31 and re-measure it.

[0057] In step S230, mark the flange plates 32 at the connection positions corresponding to the machine room supports on the machine room (including the first machine room support 10 and the second machine room support 20), and machine the thickness allowance of the flange plates 32 to ensure the flatness of the planes of the flange plates 32 and that the planes of the flange plates 32 are on the same horizontal plane.

[0058] The installation method of the machine room before improvement is machining of the flange plates before welding, and welding deformation will occur when the flange plates are welded to the machine room chassis after machining. The installation method of the quay crane machine room of the present invention adopts overall machining after flange welding, which can avoid the deformation caused by machining before welding.

[0059] In an embodiment, step S300 further includes steps S310 to S350:

[0060] In step S310, mark the cross center lines on the machine room chassis 31 for installing the machine room supports on the rear girder 1 of the quay crane.

[0061] In step S320, adjust and spot-weld the process drill template to the corresponding position of the machine room chassis 31 so that the center line of the process drill template coincides exactly with the cross center line of the machine room chassis 31.

[0062] It should be noted that before spot-welding the process drill template, dimensional verification is required to ensure the accuracy of the matching machining of the hole groups at the second set of positions on the sea side of the process drill template and the machine room chassis 31 (i.e., the positions connected to the first machine room support 10).

[0063] According to the position line of the rib plate 12 of the first machine room support 10, ensure that the opening dimension and parallelism of the rib plate 12 meet the requirements of the drawing to ensure correct alignment during subsequent installation.

[0064] In step S330, use the process drill template to match-drill the connection bolt hole groups 34 on the machine room chassis 31.

[0065] In step S340, remove the process drill template and polish the machine room chassis 31 to make it smooth and flat.

[0066] In step S350, re-measure the bolt-related hole distance dimensions in the left-right and sea-land side directions on the machine room chassis 31 (i.e., the hole distance dimensions of the connection bolt hole groups 34).

[0067] Before step S400, after the rear girder 1 and the upper crossbeam are assembled and welded, it is necessary to re-check the horizontal of the rear girder 1, the opening of the bearing rail beam, and the straightness dimension of the rear girder 1. If there are deviations, they need to be adjusted in time.

[0068] In one embodiment, step S400 further includes steps S410 to S450:

[0069] In step S410, the sea and land side dimensions of the first machine room support 10 are positioned on the rear beam 1 with the center line d of the land side upper cross beam 2 as a reference. Figure 5 shown.

[0070] Considering that the first machine room support 10 is directly fixed to the machine room chassis 31 by bolts, the hole group is relatively dense and high precision is required for positioning. Therefore, it is necessary to preferentially locate the sea and land side dimensions of the first machine room support 10 during the field installation stage of the rear beam 1.

[0071] Furthermore, by Figure 5 The distance A between the center line c of the rib plate 12 and the center line d of the land side upper cross beam 2 is shown for positioning. The positioning dimension deviation of the first engine room support 10 on the left and right rear beams 1 in the sea and land directions is required to be controlled within ±1mm.

[0072] In step S420, after the first machine room support 10 is positioned, the center line c of the rib plate 12 is used to position the sea and land side dimensions of the second machine room support 20 according to the blueprint dimension requirements.

[0073] Continue to refer Figure 5 , from the sea side to the land side, there are the second machine room support 20, the first machine room support 10 and two second machine room supports 20. After the first machine room support 10 is accurately positioned, each second machine room support 20 can be positioned according to the center line c of the rib plate 12 of the first machine room support 10 to improve the accuracy of positioning.

[0074] The second machine room support 20 is a connecting piece assembled with the shock absorbing device. Considering the 30mm deviation of the bolt hole group 13 of the first machine room support 10, the maximum allowable deviation value of the center of the lower component 24 of the shock absorbing device of the second machine room support 20 and the center of the upper pad 33 of the shock absorbing device at the corresponding position of the machine room chassis 31 in the left and right directions can be controlled within 20mm. In this way, the lower component 24 of the shock absorbing device and the upper pad 33 are fully in contact. Figure 7 In the state of maximum deviation shown, the lower component 24 can still be in full contact with the upper pad 33 .

[0075] In step S430, the connection bolt hole group 34 (such as Figure 6 and Figure 7 The matching degree of the dimensions of the left and right sides and the sea and land sides of the first machine room support 10 with the dimensions of the corresponding directions.

[0076] In step S440, symmetrically and synchronously weld the inner and outer webs of the first machine room support 10 and each second machine room support 20 on the rear girder 1, as Figure 5 shown, to control welding deformation.

[0077] In step S450, use a level to detect the level of the machine room support. If it is out of tolerance, adjust it by correcting the thickness of the first shim 14 and the second shim 23.

[0078] In one embodiment, before step S500 and after step S450, the installation method of the present invention further includes steps S460 to S470:

[0079] In step S460, sandblast and paint the rear girder 1.

[0080] In step S470, after the sandblasting and painting of the rear girder 1 are completed, install a shock absorption device on the second machine room support 20.

[0081] Combined with the structure of the aforementioned shock absorption device and Figures 6 to 7 , in steps S460 to S470, after the machine room and the rear girder 1 are respectively painted, the upper cushion block 33 of the shock absorption device is installed at the corresponding position of the machine room chassis 31, and the lower component 24 of the shock absorption device is installed on the second machine room support 20 pre-welded to the rear girder 1.

[0082] It can be understood that in the state where the rear girder 1 is not sandblasted and painted, the shock absorption device is not temporarily installed on each second machine room support 20. If the shock absorption device is installed at this time, it will be damaged during the subsequent sandblasting and painting process of the rear girder 1. Therefore, the actual installation condition of the shock absorption device is after the sandblasting and painting of the rear girder 1 are completed and before the machine room is hoisted.

[0083] In one embodiment, step S500 further includes steps S510 to S560:

[0084] In step S510, re-inspect the side bend of the rear girder 1 and the opening dimension of the bearing rail beam to ensure that the rear girder 1 is in a qualified state. Before the machine room is hoisted, step S510 needs to be executed to ensure that the rear girder 1 is in a qualified state and avoid affecting the overall assembly installation accuracy of the machine room during the hoisting process due to the dimensional problems of the rear girder 1 itself.

[0085] In step S520, arrange a support frame 4 below the machine room installation position of the rear girder 1. As Figure 9 and Figure 10 shown, the support frame 4 is in two groups, which can effectively reduce the influence of the machine room hoisting on the side bend and opening of the rear girder 1, ensure the stability of the rear girder 1, and at the same time provide guarantee for the smooth landing of the machine room hoisting. The support frame 4 needs to be removed after the rear tie rod is connected.

[0086] AsFigure 10 As shown, a process support 5 is provided between the rear girders 1, which can assist in positioning and calibration to improve the stability of the machine room installation.

[0087] Before hoisting the machine room, the flange plate 32 of the machine room and the upper cushion block 33 are bolted together. Then, the upper cushion block 33 is hoisted together with the machine room, as Figure 6 and Figure 7 shown.

[0088] In step S530, the machine room is hoisted, and a hand chain hoist is used to adjust the position of the machine room in the sea-land direction, the left-right direction, and the relative parallelism between the machine room and the rear girder 1. In S530, the positions of the left and right rear girders 1 are adjusted synchronously.

[0089] In step S540, a dowel pin is used to position the bolt holes of the flange plate 32 of the machine room chassis 31 and the first machine room support. Among them, the dowel pin is a temporary positioning tool. Before installing the bolts formally, the dowel pin is inserted into the bolt hole groups 13 of the flange plate 32 of the machine room chassis and the first machine room support 10 to align the positions of the hole groups, improve the installation accuracy and efficiency, and enable the machine room to be quickly and accurately connected to the first machine room support 10 pre-welded on the rear girder 1.

[0090] In step S550, the machine room chassis 31 and the first machine room support 10 are connected. After S540, the product bolt pairs are inserted in place in a timely manner to reduce the adjustment time and error during the installation process.

[0091] In step S560, the mating surfaces of the shock absorption devices on the machine room chassis 31 and the second machine room support 20 are inspected to ensure that their installation meets the design requirements. Figure 7 shows the state where the machine room is assembled with the second machine room support 20 pre-welded on the rear girder 1. Figure 8 shows the state where the machine room is assembled with the first machine room support 10 pre-welded on the rear girder 1, Figure 8 The rear girder 1 shown is the left rear girder.

[0092] Combined with the above embodiments, the present invention designs an installation method for connecting a suspended new type of machine room support and a Fabreeka component, which is the first in the quay crane project. The present invention designs new manufacturing, scribing, and machining technologies for the machine room support, designs the overall machining technology after flange welding at the connection position of the machine room chassis support, and related technologies such as pre-welding positioning and installation of the machine room support, realizing the first pre-welding of the machine room support of the port machinery quay crane, avoiding the problems of paint damage caused by hot work after painting and the gap between the machine room support and the girder panel, and at the same time comprehensively improving the construction safety and environmental protection.

[0093] Although the present invention is disclosed above in preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, all modifications, equivalent changes and decorations made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. An installation method for a quay crane machine room, characterized in that The installation method includes: Fabricate the first machine room support and the second machine room support, mark lines on the fabricated first machine room support and the second machine room support respectively, and process the surplus on their panels; Mark lines on the flange plate welded to the machine room chassis, and process its thickness surplus; Mark lines on the entire machine room chassis, and process the connecting bolt hole group; Position and pre-weld the first machine room support and the second machine room support on the rear girder of the quay crane in the state where the rear girder of the quay crane has not been sandblasted and painted; Lift the machine room onto the first machine room support and the second machine room support that have been pre-welded on the rear girder, and connect the machine room chassis with the first machine room support.

2. The installation method according to claim 1, characterized in that, The fabrication of the first machine room support and the second machine room support, marking lines on the fabricated first machine room support and the second machine room support respectively, and processing the surplus on their panels includes: Fabricate the first machine room support, mark lines on the first machine room support separately, and process the surplus on its panel; Mark the center line of the first machine room support, and use a center punch to punch eye marks on the side of the panel with the plate thickness as the center punch marks; Based on the center punch marks of the first machine room support, process the bolt hole group.

3. The installation method according to claim 2, wherein, The fabrication of the first machine room support and the second machine room support, marking lines on the fabricated first machine room support and the second machine room support respectively, and processing the surplus on their panels further includes: Fabricate the second machine room support, mark lines on the second machine room support separately, and process the surplus on its panel; Mark the center line of the second machine room support, and use a center punch to punch eye marks on the side of the panel with the plate thickness as the center punch marks; Based on the center punch marks of the second machine room support, process the bolt holes.

4. The installation method according to claim 3, characterized in that The marking lines on the flange plate welded to the machine room chassis and processing its thickness surplus includes: Turn the machine room chassis over for secondary pouring and welding; Turn the reverse side of the machine room chassis upwards, correct the horizontal of the main beam of the machine room chassis and re-measure; Mark lines on the flange plate at the connection position of the machine room corresponding to the machine room support, and machine-process the thickness surplus of the flange plate.

5. The installation method according to claim 4, wherein The marking lines on the entire machine room chassis and processing the connecting bolt hole group includes: Mark the cross center line on the machine room chassis for installing the machine room support on the rear girder of the quay crane; Adjust and spot-weld the process drill template to the corresponding position of the machine room chassis so that the center line of the process drill template and the cross center line of the machine room chassis completely coincide; Use the process drill template to match-drill the connecting bolt hole group on the machine room chassis; Remove the process drill template and grind the machine room chassis; Re-measure the bolt-related hole pitch dimensions in the left and right sides and the sea and land sides of the machine room chassis.

6. The installation method according to any one of claims 3-5, characterized in that, The positioning and pre-welding of the first machine room support and the second machine room support on the rear girder in the state where the rear girder of the quay crane has not been sandblasted and painted includes: Based on the center line of the land side upper crossbeam, position the sea and land side dimensions of the first machine room support on the rear girder; After the positioning of the first machine room support is completed, position the sea and land side dimensions of the second machine room support according to the blueprint dimensions based on the center line of its rib plate.

7. The installation method according to claim 6, characterized in that, The positioning and pre-welding of the first machine room support and the second machine room support on the rear girder in the state where the rear girder of the quay crane has not been sandblasted and painted further includes: Re-measure the matching degree between the left and right sides and the sea and land sides of the connection bolt hole group of the machine room chassis and the corresponding directions of the first machine room support; The inner and outer webs of the first machine room support and each second machine room support are symmetrically and synchronously welded on the rear beam; Use a spirit level to check the level of the machine room support. If it is out of tolerance, adjust it by adjusting the thickness of the pad.

8. The installation method according to claim 6, characterized in that Before the machine room is hoisted onto the first machine room support and the second machine room support that have been pre-welded on the rear beam and the machine room chassis is connected to the first machine room support, the method further includes: Sandblast and paint the rear beam; After the sandblasting and painting of the rear beam is completed, the shock-absorbing device is installed on the support of the second machine room.

9. The installation method according to claim 8, wherein The method of hoisting the machine room onto the first machine room support and the second machine room support pre-welded on the rear beam, and connecting the machine room chassis to the first machine room support, comprises: Recheck the lateral bending of the rear beam and the opening size of the track beam to ensure that the rear beam is in a qualified state; A tire frame is arranged below the machine room installation position of the rear beam.

10. The installation method according to claim 9, wherein, The method of hoisting the machine room onto the machine room support and connecting the machine room chassis to the machine room support also includes: Hoist the machine room and use the hand chain hoist to adjust the position of the machine room in the sea and land directions, the left and right sides, and the relative parallelism between the machine room and the rear beam; Use guide pins to locate the flange plate of the machine room chassis and the bolt holes of the first machine room support; Connect the machine room chassis and the first machine room support; Check the fitting surfaces of the shock absorbers on the machine room chassis and the second machine room supports.

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