Installation method of ship pipe arranging machine

Abstract

The invention relates to the technical field of ocean engineering, and discloses an installation method of a ship pipe arranging machine. Preliminarily positioning the upper guide rail assembly; mounting an upper pulley; according to the well center datum line of the drill floor surface, the center line of the lower guide rail assembly is worked out, the lower guide rail assembly is assembled on the drill floor surface, a base plate used for fixing the lower guide rail assembly is installed and welded in the drill floor structure, the base plate is located below the drill floor surface, a first threaded hole is formed in the drill floor surface, and an epoxy cushion block is poured on the drill floor surface; the third mounting hole, the second threaded hole and the first threaded hole are connected to the lower guide rail assembly in a screwed mode through bolts so that the lower guide rail assembly can be fixed to the drill floor; mounting a lower pulley; mounting a stand column; the lower guide rail assembly ensures that the calandria machine is installed in place at a time, the deviation error between the center line of the calandria machine and the center line of a wellhead is small, repeated correction is avoided, and the overall load resistance of the lower guide rail assembly is improved.

Description

Technical Field

[0001] The invention relates to the technical field of marine engineering, and in particular to an installation method of a ship pipe laying machine. Background Art

[0002] The ship pipe loader is one of the main equipment of the drilling rig pipe handling system. It is used to assemble, process and store pipe stands in the finger beam and move them in and out of the finger beam as needed. The pipe loader is remotely controlled by the drilling room and has the function of straightening the corer to meet the needs of transferring the corer salvaged from the top drive center through hole to the first corer catwalk on the drilling platform during ocean scientific drilling operations. However, the existing ship pipe loader is difficult to install in place at one time and usually requires repeated position adjustment. Summary of the invention

[0003] The problem to be solved by the present invention is to provide an installation method for a ship pipe laying machine, which ensures that the pipe laying machine is installed in place at one time, reduces the deviation error between the center line of the pipe laying machine and the center line of the wellhead, avoids repeated corrections, and improves the overall load-bearing capacity of the lower guide rail assembly.

[0004] In order to solve the above technical problems, the present invention provides a method for installing a ship pipe laying machine, comprising the following steps:

[0005] Step 1: Preliminary positioning of the upper guide rail assembly: The crane hoists the upper guide rail into the derrick, adjusts the position of the upper guide rail assembly so that the first mounting hole of the upper guide rail assembly is aligned with the second mounting hole of the mounting base in the derrick, lowers the upper guide rail assembly into place, and temporarily connects the first mounting hole of the upper guide rail assembly with the second mounting hole of the mounting base through bolts, and does not tighten the bolts;

[0006] Step 2, installation of the upper pulley: temporarily remove a section of the upper rack in the upper guide rail assembly, hoist and install the upper pulley to the position where the upper rack is removed from the upper guide rail, and then slowly drag the upper pulley to the locking position of the fore rail of the upper guide rail assembly, so that the upper motor gear of the upper pulley meshes smoothly with the upper rack, and reinstall the temporarily removed upper rack on the upper guide rail assembly;

[0007] Step 3, installation of the lower guide rail assembly: according to the well center reference line of the drilling platform, complete the center line of the lower guide rail assembly, complete the assembly of the lower guide rail assembly on the drilling platform, adjust the positions of the upper guide rail assembly and the lower guide rail assembly according to the installation drawing, so that the parallelism and horizontality of the upper guide rail assembly relative to the midship line, the parallelism and horizontality of the lower guide rail assembly relative to the midship line, and the spacing between the upper guide rail assembly and the lower guide rail assembly are all within the allowable range, and then fasten the upper guide rail assembly to the installation base; according to the installation drawing, weld a pad for fixing the lower guide rail assembly in the drilling platform structure, the pad is located under the drilling platform, and a first threaded hole is opened on the drilling platform, and an epoxy pad is cast on the drilling platform, the epoxy pad is located directly above the pad, and a second threaded hole connected to the first threaded hole is formed on the epoxy pad, and the lower guide rail assembly is fixed to the drilling platform by tightening bolts to the third mounting hole, the second threaded hole and the first threaded hole of the lower guide rail assembly;

[0008] Step 4, installation of the lower carriage: temporarily remove a section of the lower rack in the lower guide rail assembly, hoist the lower carriage to the position where the lower rack is removed from the lower guide rail, and then slowly drag the lower carriage to the locking position of the fore rail of the lower guide rail assembly, so that the lower motor gear of the lower carriage meshes smoothly with the lower rack, the parking position of the lower carriage is opposite to the parking position of the upper pulley, and the temporarily removed lower rack is reinstalled on the lower guide rail assembly;

[0009] Step 5: Install the column: Install the bottom of the column on the lower pulley and the top of the column on the upper pulley.

[0010] As a preferred solution of the invention, in the step 1, two traction ropes are respectively provided at both ends of the upper guide rail assembly, and the crane hoists the upper guide rail assembly through the traction ropes. When the crane hoists the upper guide rail assembly into the derrick, the upper guide rail assembly is flush with the diagonal of the derrick. When the upper guide rail assembly is close to the mounting base, the traction rope is slowly pulled to pull the upper guide rail assembly to the installation position. After adjusting the position so that the mounting hole is aligned with the mounting hole of the derrick mounting base, the upper guide rail assembly is lowered into place, and the first mounting hole of the upper guide rail assembly is temporarily connected with the second mounting hole of the mounting base by bolts.

[0011] As a preferred solution of the invention, in step 1, the upper guide rail assembly is provided with a mounting seat plate, the first mounting hole is arranged on the mounting seat plate, an adjustment shaft is provided on the top of the mounting seat plate, and the upper guide rail assembly is provided with an adjustment long hole for allowing the adjustment shaft to move along the length direction of the upper guide rail assembly, and the adjustment shaft can be locked on the adjustment long hole.

[0012] As a preferred solution of the invention, in the step 2, before installing the upper pulley, the upper guide wheel, the lower guide wheel and the upper motor support guide wheel on the inner side of the upper pulley are temporarily removed, and then the upper pulley is installed at the position where the upper rack is removed from the upper guide rail, and then the upper guide wheel and the lower guide wheel are reinstalled on the upper pulley, and the distance between the upper guide wheel and the lower guide wheel is adjusted to meet the design requirements; and before installing the eccentric bolt on the upper motor support guide wheel, lubricating grease is applied to the surface, and then the upper motor support guide wheel is reinstalled on the upper pulley, and the eccentric bolt is adjusted to make the distance between the upper motor support guide wheel and the upper rack meet the design requirements.

[0013] As a preferred solution of the invention, in step 5, before installing the bottom of the column, temporarily remove the upper bearing of the universal joint on the lower carriage, apply lubricating grease to the bearing surface of the universal joint on the column, rotate the slewing bearing of the lower carriage so that the rotary encoder of the lower carriage faces the side of the lower guide arm on the column, and then slowly drop the column so that the bearing of the universal joint on the column falls into the lower bearing of the universal joint on the lower carriage, and then reinstall the upper bearing of the universal joint on the lower carriage, and connect the pipe laying machine to the oiling pipeline.

[0014] As a preferred solution of the invention, in step 5, before installing the top of the column, open the column clamping ring on the upper pulley, use a sling to pull the top main shaft of the column into the column clamping ring, close the column clamping ring, and adjust the gap between the main shaft of the column and the column clamping ring by adjusting the adjusting bolts and gaskets on the column clamping ring to meet the design requirements.

[0015] As a preferred solution of the invention, in step 5, molybdenum disulfide grease is applied to the bearing surface of the universal joint on the column.

[0016] Compared with the prior art, the installation method of a ship pipe laying machine implemented by the present invention has the following beneficial effects:

[0017] The installation operation of the present invention is simple. The lower guide rail assembly is assembled on-site on the drilling table according to the well center reference line of the drilling table. The upper guide rail assembly is first preliminarily positioned, and the positions of the lower guide rail assembly and the upper guide rail assembly are finely adjusted according to the design requirements to ensure that the installation position is accurate without the need for subsequent repeated adjustments. In addition, in the lower guide rail assembly, the epoxy pad is welded under the drilling table, which changes the traditional installation form of welding the epoxy pad on the upper side of the drilling table, increases the stress-bearing area of ​​the epoxy pad, improves the overall load-bearing capacity of the lower guide rail assembly, and the thickness of the epoxy pad becomes continuous and uniform, which also extends the service life of the epoxy pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0019] Figure 1 It is a structural schematic diagram of a ship pipe laying machine provided by the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the coordination between the traction rope and the upper guide rail assembly;

[0021] Figure 3 It is a schematic diagram of the structure when the upper guide rail assembly is hoisted;

[0022] Figure 4 This is a schematic diagram of the structure when the upper guide rail assembly is installed;

[0023] Figure 5 It is a schematic diagram of the structure of the cooperation between the upper pulley and the upper guide rail assembly;

[0024] Figure 6 It is a schematic diagram of the cross-sectional structure of the lower guide rail assembly;

[0025] Figure 7 It is a schematic diagram of the coordination structure between the column and the lower slide;

[0026] Figure 8 It is a structural schematic diagram of the column clamp ring of the upper pulley;

[0027] In the figure, upper pulley 1; upper guide wheel 11; lower guide wheel 12; upper motor supporting guide wheel 13; upper motor 14; column snap ring 15; snap ring bearing 151; mounting bolt 152; gasket 153; adjusting bolt 154; upper guide rail assembly 2; upper rack 21; mounting seat plate 22; adjusting shaft 221; adjusting long hole 23; lower pulley 3; lower guide rail assembly 4; lower rack 41; grille 42; cover plate 43; rail 44; enclosure plate 45; pad 46; first threaded hole 47; epoxy gasket 48; second threaded hole 481; upper bearing 491; lower bearing 492; rotary encoder 493; column 5; bearing 51; telescopic arm 6; lower guide arm 7; derrick 8; traction rope 9; drilling table 10. DETAILED DESCRIPTION

[0028] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information.

[0030] like Figures 1 to 8 As shown, a method for installing a pipe laying machine for a ship according to a preferred embodiment of the present invention, the pipe laying machine comprises an upper pulley 1, an upper guide rail assembly 2, a lower pulley 3, a lower guide rail assembly 4 and a column 5, the upper pulley 1 and the lower pulley 3 are respectively arranged at the upper and lower ends of the column 5, the upper pulley 1 is slidably connected to the upper guide rail assembly 2, the lower pulley 3 is slidably connected to the lower guide rail assembly 4, and a telescopic arm 6 and a lower guide arm 7 are provided on the column 5; the method for installing the pipe laying machine for a ship comprises the following steps; Step 1, preliminary positioning of the upper guide rail assembly 2: the crane hoists the upper guide rail into the derrick 8, adjusts the position of the upper guide rail assembly 2 so that the first mounting hole of the upper guide rail assembly 2 is aligned with the second mounting hole of the mounting base in the derrick 8, puts the upper guide rail assembly 2 into place, and temporarily connects the first mounting hole of the upper guide rail assembly 2 with the second mounting hole of the mounting base through bolts, and does not tighten the bolts (do not tighten the torque temporarily), so as to accurately adjust the position of the upper guide rail assembly 2 later;

[0031] Step 2, installation of the upper pulley 1: temporarily remove a section of the upper rack 21 in the upper guide rail assembly 2, hoist and install the upper pulley 1 to the position where the upper rack 21 is removed from the upper guide rail, and then slowly drag the upper pulley 1 to the locking position of the fore rail of the upper guide rail assembly 2, so that the upper motor 14 gear of the upper pulley 1 is smoothly meshed with the upper rack 21 without jamming, and reinstall the temporarily removed upper rack 21 on the upper guide rail assembly 2;

[0032] Step 3, installation of the lower guide rail assembly 4: according to the well center reference line of the drilling table 10, complete the center line of the lower guide rail assembly 4, complete the assembly of the lower guide rail assembly 4 on the drilling table 10, pay attention to the direction of the lower guide rail assembly 4 when placing it, the side of the lower guide rail assembly 4 with the mounting screw holes of the protective cover plate 43 faces the well center, the digital numbers of the connecting screw positions must correspond, when installing the lower rack 41, use the rack as a template to check the installation clearance of the lower rack 41, if there is a problem, adjust it through the connecting screw, install the grille 42 and the cover plate 43, use the adjustment bolts 154 and the temporary top screws around to adjust the lower guide rail into place, install the end baffle and angle steel of the lower guide rail assembly 4; adjust the position of the upper guide rail assembly 2 and the lower guide rail assembly 4 according to the installation drawing, so that the parallelism and horizontality of the upper guide rail assembly 2 relative to the midship line, the parallelism and horizontality of the lower guide rail assembly 4 relative to the midship line, and The spacing between the upper guide rail assembly 2 and the lower guide rail assembly 4 is within the allowable range, and then the upper guide rail assembly 2 is fastened to the mounting base; according to the installation drawing, a pad 46 for fixing the lower guide rail assembly 4 is welded in the drilling platform structure, the pad 46 is located below the drilling platform surface 10, and a first threaded hole 47 is opened on the drilling platform surface 10, and an epoxy pad 48 is cast on the drilling platform surface 10, the epoxy pad 48 is located directly above the pad 46, and a second threaded hole 481 connected to the first threaded hole 47 is formed on the epoxy pad 48, and the third mounting hole, the second threaded hole 481 and the first threaded hole 47 of the lower guide rail assembly 4 are tightened by bolts to fix the lower guide rail assembly 4 on the drilling platform; before casting the epoxy pad 48, clean the epoxy pad 48 area and the debris in the screw hole, spot weld the epoxy pad 48 surrounding edge 45, and complete the casting of the epoxy pad 48 according to the relevant process;

[0033] Step 4, installation of the lower trolley 3: temporarily remove a section of the lower rack 41 in the lower guide rail assembly 4, apply lubricating grease to the remaining lower racks 41, hoist the lower trolley 3 to the position where the lower rack 41 is removed from the lower guide rail, and then slowly drag the lower trolley 3 to the locking position of the fore rail of the lower guide rail assembly 4, so that the lower motor gear of the lower trolley 3 and the lower rack 41 are smoothly meshed without jamming, and the parking position of the lower trolley 3 is opposite to the parking position of the upper trolley 1, and the temporarily removed lower rack 41 is reinstalled on the lower guide rail assembly 4, check and confirm that the clearance between the gear and the rack meets the requirements, and install the remaining protective cover plate 43;

[0034] Step 5, installation of column 5: install the bottom of column 5 on lower pulley 3, and install the top of column 5 on upper pulley 1.

[0035] Exemplarily, in step 1, two traction ropes 9 are respectively provided at both ends of the upper guide rail assembly 2, and the crane hoists the upper guide rail assembly 2 through the traction ropes 9. When the crane hoists the upper guide rail assembly 2 into the derrick 8, the upper guide rail assembly 2 is flush with the diagonal of the derrick 8. When the upper guide rail assembly 2 is close to the mounting base, the traction rope 9 is slowly pulled to pull the upper guide rail assembly 2 to the installation position, and after adjusting the position so that the mounting hole is aligned with the mounting hole of the derrick 8 mounting base, the upper guide rail assembly 2 is lowered into place, and the first mounting hole of the upper guide rail assembly 2 is temporarily connected with the second mounting hole of the mounting base by bolts; the installation position of the upper guide rail assembly 2 can be quickly adjusted.

[0036] Exemplarily, in step 1, the upper guide rail assembly 2 is provided with a mounting seat plate 22, the first mounting hole is arranged on the mounting seat plate 22, an adjustment shaft 221 is arranged on the top of the mounting seat plate 22, and the upper guide rail assembly 2 is provided with an adjustment long hole 23 for allowing the adjustment shaft 221 to move along the length direction of the upper guide rail assembly 2, and the adjustment shaft 221 can be locked on the adjustment long hole 23, so as to avoid the situation where the first mounting hole on the upper guide rail assembly 2 cannot be aligned with the second mounting hole of the mounting seat plate 22 when the upper guide rail assembly 2 is adjusted to the accurate position. In this way, the position of the first mounting hole can be adjusted without moving the upper guide rail assembly 2, thereby improving the installation convenience and versatility.

[0037] Exemplarily, in step 2, before installing the upper pulley 1, the upper guide wheel 11, the lower guide wheel 12 and the upper motor support guide wheel 13 on the inner side of the upper pulley 1 are temporarily removed, and during the removal of the guide wheels, a platform is set under the guide wheels to prevent the guide wheels from falling; then the upper pulley 1 is installed at the position where the upper rack 21 is removed from the upper guide rail, and then the upper guide wheel 11 and the lower guide wheel 12 are reinstalled on the upper pulley 1, and the distance between the upper guide wheel 11 and the lower guide wheel 12 is adjusted to meet the design requirements; and before installing the eccentric bolt on the upper motor support guide wheel 13, grease is applied on the surface, and then the upper motor support guide wheel 13 is reinstalled on the upper pulley 1, and the distance between the upper motor support guide wheel 13 and the upper rack 21 is adjusted to meet the design requirements, and then the temporarily removed upper rack 21, railings, platforms, drag chains and other accessories are reinstalled in their original positions.

[0038] Exemplarily, in step 5, before installing the bottom of the column 5, temporarily remove the upper bearing 491 of the universal joint on the lower carriage 3, check whether the hydraulic pipes, cables, etc. on the column 5 affect the lifting or installation, and protect the parts that are easily damaged. Apply lubricating grease to the surface of the bearing 51 of the universal joint on the column 5, rotate the slewing bearing 51 of the lower carriage 3 so that the rotary encoder 493 of the lower carriage 3 faces the side of the lower guide arm 7 on the column 5, and then slowly drop the column 5 so that the bearing 51 of the universal joint on the column 5 falls into the lower bearing 492 of the universal joint on the lower carriage 3, and keep the column 5 in a vertical state with a maximum deflection of no more than 3 degrees; then reinstall the upper bearing 491 of the universal joint on the lower carriage 3, and connect the pipe laying machine to the oiling pipeline; ensure that the bottom of the column 5 and the lower carriage 3 are installed quickly and accurately.

[0039] Exemplarily, in step 5, before the top of the column 5 is installed, the mounting bolts 152 and gaskets 153 on the retaining ring of the upper trolley column 5 are temporarily removed, the retaining ring of the column 5 on the upper pulley 1 is opened, and a lifting sling (such as a hand winch) is used to pull the top main shaft of the column 5 into the retaining ring of the column 5, and the retaining ring of the column 5 is closed. By adjusting the adjusting bolts 154 and gaskets 153 on the retaining ring of the column 5, the gap between the main shaft of the column 5 and the retaining ring of the column 5 is adjusted to meet the design requirements, ensuring that the gap is ≥2mm, and then the safety chain is installed, other pipelines and accessories are installed, the gear clearance of the pipe laying machine is adjusted, and the gear box is oiled. The installation work is completed, and it is convenient and accurate to install and connect the top main shaft of the column 5 with the upper pulley 1.

[0040] Exemplarily, in step 5, molybdenum disulfide grease is applied to the surface of the universal joint bearing 51 on the column 5 to ensure good lubrication of the universal joint bearing 51 on the column 5.

[0041] In summary, the installation operation of the present invention is simple. The lower guide rail assembly 4 is assembled on-site on the drilling table 10 according to the well center reference line of the drilling table 10, and the upper guide rail assembly 2 is preliminarily positioned first. The positions of the lower guide rail assembly 4 and the upper guide rail assembly 2 are finely adjusted according to the design requirements to ensure that the installation position is accurate without the need for subsequent repeated adjustments. Moreover, in the lower guide rail assembly 4, the epoxy pad 46 is welded to the bottom of the drilling table 10, which changes the traditional installation form of welding the epoxy pad 46 to the top of the drilling table 10, increases the force-bearing area of ​​the epoxy pad 48, improves the overall load-bearing capacity of the lower guide rail assembly 4, and the thickness of the epoxy pad 48 becomes continuous and uniform, which also extends the service life of the epoxy pad 48.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the various technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A method for installing a ship pipe laying machine, characterized in that: The steps include: Step 1: Preliminary positioning of the upper guide rail assembly: The crane hoists the upper guide rail into the derrick, adjusts the position of the upper guide rail assembly so that the first mounting hole of the upper guide rail assembly is aligned with the second mounting hole of the mounting base in the derrick, lowers the upper guide rail assembly into place, and temporarily connects the first mounting hole of the upper guide rail assembly with the second mounting hole of the mounting base through bolts, and does not tighten the bolts; Step 2, installation of the upper pulley: temporarily remove a section of the upper rack in the upper guide rail assembly, hoist and install the upper pulley to the position where the upper rack is removed from the upper guide rail, and then slowly drag the upper pulley to the locking position of the fore rail of the upper guide rail assembly, so that the upper motor gear of the upper pulley meshes smoothly with the upper rack, and reinstall the temporarily removed upper rack on the upper guide rail assembly; Step 3, installation of the lower guide rail assembly: according to the well center reference line of the drilling platform, complete the center line of the lower guide rail assembly, complete the assembly of the lower guide rail assembly on the drilling platform, adjust the positions of the upper guide rail assembly and the lower guide rail assembly according to the installation drawing, so that the parallelism and horizontality of the upper guide rail assembly relative to the midship line, the parallelism and horizontality of the lower guide rail assembly relative to the midship line, and the spacing between the upper guide rail assembly and the lower guide rail assembly are all within the allowable range, and then fasten the upper guide rail assembly to the installation base; according to the installation drawing, weld a pad for fixing the lower guide rail assembly in the drilling platform structure, the pad is located under the drilling platform, and a first threaded hole is opened on the drilling platform, and an epoxy pad is cast on the drilling platform, the epoxy pad is located directly above the pad, and a second threaded hole connected to the first threaded hole is formed on the epoxy pad, and the lower guide rail assembly is fixed to the drilling platform by tightening bolts to the third mounting hole, the second threaded hole and the first threaded hole of the lower guide rail assembly; Step 4, installation of the lower carriage: temporarily remove a section of the lower rack in the lower guide rail assembly, hoist the lower carriage to the position where the lower rack is removed from the lower guide rail, and then slowly drag the lower carriage to the locking position of the fore rail of the lower guide rail assembly, so that the lower motor gear of the lower carriage meshes smoothly with the lower rack, the parking position of the lower carriage is opposite to the parking position of the upper pulley, and the temporarily removed lower rack is reinstalled on the lower guide rail assembly; Step 5: Install the column: Install the bottom of the column on the lower pulley and the top of the column on the upper pulley.

2. The installation method of the ship pipe laying machine according to claim 1, characterized in that: In step 1, two traction ropes are respectively set at both ends of the upper guide rail assembly, and the crane hoists the upper guide rail assembly through the traction ropes. When the crane hoists the upper guide rail assembly into the derrick, the upper guide rail assembly is flush with the diagonal of the derrick. When the upper guide rail assembly is close to the mounting base, the traction rope is slowly pulled to pull the upper guide rail assembly to the installation position. After adjusting the position so that the mounting hole is aligned with the mounting hole of the derrick mounting base, the upper guide rail assembly is lowered into place, and the first mounting hole of the upper guide rail assembly is temporarily connected with the second mounting hole of the mounting base by bolts.

3. The installation method of the ship pipe laying machine according to claim 1, characterized in that: In step 1, the upper guide rail assembly is provided with a mounting seat plate, the first mounting hole is arranged on the mounting seat plate, an adjustment shaft is arranged on the top of the mounting seat plate, and the upper guide rail assembly is provided with an adjustment long hole for allowing the adjustment shaft to move along the length direction of the upper guide rail assembly, and the adjustment shaft can be locked on the adjustment long hole.

4. The installation method of the ship pipe laying machine according to claim 1, characterized in that: In step 2, before installing the upper pulley, temporarily remove the upper guide wheel, lower guide wheel and upper motor support guide wheel on the inner side of the upper pulley, and then install the upper pulley at the position where the upper rack is removed from the upper guide rail, and then reinstall the upper guide wheel and lower guide wheel onto the upper pulley, and adjust the distance between the upper guide wheel and the lower guide wheel to meet the design requirements; and before installing the eccentric bolt on the upper motor support guide wheel, apply lubricating grease on the surface, and then reinstall the upper motor support guide wheel onto the upper pulley, and adjust the eccentric bolt so that the distance between the upper motor support guide wheel and the upper rack meets the design requirements.

5. The installation method of the ship pipe laying machine according to claim 1, characterized in that: In step 5, before installing the bottom of the column, temporarily remove the upper bearing of the universal joint on the lower carriage, apply lubricating grease to the bearing surface of the universal joint on the column, rotate the slewing bearing of the lower carriage so that the rotary encoder of the lower carriage faces the side of the lower guide arm on the column, and then slowly drop the column so that the bearing of the universal joint on the column falls into the lower bearing of the universal joint on the lower carriage, and then reinstall the upper bearing of the universal joint on the lower carriage, and connect the pipe laying machine to the oil filling pipeline.

6. The installation method of the ship pipe laying machine according to claim 5, characterized in that: In step 5, before installing the top of the column, open the column clamping ring on the upper pulley, use the sling to pull the top main shaft of the column into the column clamping ring, close the column clamping ring, and adjust the gap between the main shaft of the column and the column clamping ring by adjusting the adjusting bolts and gaskets on the column clamping ring to meet the design requirements.

7. The installation method of the ship pipe laying machine according to claim 5, characterized in that: In step 5, molybdenum disulfide grease is applied to the bearing surface of the universal joint on the column.

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