CN118848897A - Cutter suction dredger maintenance platform and installation method thereof - Google Patents

Abstract

The invention belongs to the technical field of cutter suction dredger maintenance and discloses a cutter suction dredger maintenance platform and an installation method thereof, wherein the cutter suction dredger maintenance platform comprises an upper maintenance platform and a lower maintenance platform, the upper maintenance platform comprises an upper platform main body and a flange seat, the lower maintenance platform comprises a lower platform main body, the flange seat is arranged on the portal frame, a first flange and a second flange are arranged on the flange seat in a stepped mode, one end of the upper platform main body is detachably connected to the first flange or the second flange, the other end of the upper platform main body is rotatably connected to the lower platform main body, and the lower platform main body can be locked on the upper platform main body. According to the reamer, when the reamer works, the lower platform main body is rotated to a certain angle to avoid interference in the operation process, and when the reamer needs to be maintained, the lower platform main body is lowered, so that an operator can move onto the upper platform main body to the lower platform main body to maintain the reamer, and the reamer is suitable for reamers with different heights through the first flange and the second flange which are arranged in steps.

Description

Cutter suction dredger maintenance platform and installation method thereof

Technical Field

The invention relates to the technical field of cutter suction dredger maintenance, and in particular to a cutter suction dredger maintenance platform and an installation method thereof.

Background Art

At present, in order to ensure the high efficiency of dredger reamer maintenance, a maintenance platform is usually set up to facilitate operators to stand and operate. However, most maintenance platforms are non-folding structures, which is not only inconvenient to store the platform in a non-maintenance state, but also not conducive to operators to perform efficient maintenance operations in a maintenance state. At the same time, due to the large number of medium and small components on the maintenance platform, the production, assembly and loading processes are relatively complicated, and the precision requirements are high. The original installation method cannot be applied to the maintenance platform with a more complex structure. Therefore, how to achieve fast and efficient maintenance of the reamer in the suction dredger, and ensure the stable storage of the platform in a non-maintenance state, and achieve high-precision and high-quality installation are the problems that people in this field need to solve.

Summary of the invention

The object of the present invention is to provide a cutter suction dredger maintenance platform and an installation method thereof, so as to realize fast and efficient maintenance work of the reamer in the cutter suction dredger, ensure stable accommodation of the platform in a non-maintenance state, and realize high-precision and high-quality installation.

To achieve this object, the present invention adopts the following technical solutions:

The cutter suction dredger maintenance platform is installed on the gantry, wherein the cutter suction dredger maintenance platform comprises:

An upper maintenance platform and a lower maintenance platform, the upper maintenance platform includes an upper platform body and a flange seat, the lower maintenance platform includes a lower platform body, the flange seat is arranged on the gantry, the upper step of the flange seat is provided with a first flange and a second flange, one end of the upper platform body is detachably connected to the first flange or the second flange, and the other end is rotatably connected to the lower platform body, and the lower platform body can be locked on the upper platform body.

Optionally, a connecting seat is provided on the lower platform body, and a locking seat is provided on the upper maintenance platform, and the connecting seat and the locking seat are locked and connected by bolts.

Optionally, one end of the upper platform body is connected to a first rotating shaft seat, and one end of the lower platform body is provided with a second rotating shaft seat, and the first rotating shaft seat and the second rotating shaft seat are rotatably connected.

Optionally, the lower maintenance platform further includes a base, two lower platform bodies are provided, and the two lower platform bodies are spaced apart and arranged on the base, and the upper platform body is arranged in one-to-one correspondence with the lower platform body.

Optionally, the lower maintenance platform further includes a base, two lower platform bodies are provided, and the two lower platform bodies are spaced apart and arranged on the base, and the upper platform body is arranged in one-to-one correspondence with the lower platform body.

On the other hand, the installation method of the cutter suction dredger maintenance platform includes the following steps:

S1. Assembling the upper maintenance platform of the cutter suction dredger maintenance platform;

S2, assembling the structure of the lower maintenance platform of the cutter suction dredger maintenance platform except the connecting seat;

S3. After the lower maintenance platform is installed, adjust the flatness and mark the reference line for positioning;

S4. Assemble the upper maintenance platform and position it, and use the true axis to connect the upper maintenance platform and the lower maintenance platform;

S5. Install the connecting seat on the locking seat of the upper maintenance platform, lift and rotate the lower maintenance platform until the connecting seat is matched and connected with the connecting column of the lower maintenance platform.

Optionally, step S1 includes:

S1.1. Assemble the upper platform body, flange seat and first rotating shaft seat on the tire respectively;

S1.2. Draw a ground sample line on the upper platform body, and hoist the first rotating shaft seat on the upper platform body, assemble it with the tire, and remove it from the tire and put it into the support after passing the inspection;

S1.3. Connect the flange seat with the upper platform body and the first rotating shaft seat and then paint them after they are integrally connected.

As an option, the flange plates of the first flange and the second flange in the flange seat are pre-connected to the upper platform body by bolts, and the flange plates are welded to the first flange and the second flange in sequence to ensure that the two flange plates are arranged in parallel, and the accuracy is checked before welding and re-tested after welding. After passing the test, the bolts are removed.

Optionally, step S2 includes:

S2.1. Assemble the base, extension platform, lower platform body and connecting seat separately on the tire;

S2.2. After the tire is turned over and upright, the base is supported by temporary supports and baseline frames, and laser marking is used;

S2.3. Sequentially lift the extension platform and the lower platform body off the tire and roughly position and install the base;

S2.4. Use steel wire ropes to pass through the second axial holes in the two lower platform bodies respectively, adjust them into place and then weld them.

Optionally, step S4 includes:

S4.1. Use a steel wire rope to align the first axial hole in the upper maintenance platform with the second axial hole in the lower maintenance platform, and adjust the concentricity and flatness of the two to complete the positioning;

S4.2. Use a code plate instead of a wire rope to fix the position of the first rotating shaft seat and the second rotating shaft seat, then bore holes and pass a true shaft through them to connect the upper maintenance platform and the lower maintenance platform.

Beneficial effects of the present invention:

In the present invention, the upper maintenance platform and the lower maintenance platform can rotate relative to each other under the setting of the upper platform body and the lower platform body being rotatably connected, so that when the reamer is working normally, the lower platform body can be rotated to a certain angle to avoid interference in its operation process, and when the reamer needs to be maintained, the lower platform body is lowered, so that the operator can move from the upper platform body to the lower platform body to maintain the reamer. Further, the upper maintenance platform is also provided with a flange seat, and the flange seat is arranged on the gantry, so that the stable installation of the entire maintenance platform on the hull can be ensured. Further, the upper step of the flange seat is provided with a first flange and a second flange, so that the upper maintenance platform can be connected to the first flange or the second flange as needed, so as to expand the scope of use, and can be correspondingly applied to reamers of different heights, and the maintenance space can be controlled. Optionally, the lower platform body can be locked on the upper platform body, so as to ensure that the position of the lower platform body can be fixed after rotating a certain angle, so as to avoid the lower platform body falling during the operation of the reamer, affecting its normal operation and causing danger. Accordingly, the installation method of the cutter suction dredger maintenance platform adopts the method of assembling the lower maintenance platform and the upper maintenance platform separately and then installing them, and pre-installing the connecting seat on the locking seat, and then installing them with the lower maintenance platform, which can effectively improve the accuracy and stability of the installation of the entire device. Similarly, the upper maintenance platform and the lower maintenance platform are connected by a true shaft, which can also ensure the stability of the rotation of the two.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a cutter suction dredger maintenance platform according to an embodiment of the present invention;

2 is a schematic diagram of a maintenance state and a locked state of a maintenance platform of a cutter suction dredger according to an embodiment of the present invention;

3 is a schematic structural diagram of an upper maintenance platform in a maintenance platform of a cutter suction dredger according to an embodiment of the present invention;

4 is a schematic structural diagram of an upper maintenance platform of a cutter suction dredger maintenance platform according to an embodiment of the present invention, omitting the flange seat;

5 is a top view schematically showing an upper maintenance platform of a cutter suction dredger maintenance platform according to an embodiment of the present invention with the flange seat omitted;

6 is a schematic structural diagram of a first rotating shaft seat in a cutter suction dredger maintenance platform according to an embodiment of the present invention;

7 is a cross-sectional schematic diagram of a first rotating shaft seat in a cutter suction dredger maintenance platform according to an embodiment of the present invention;

8 is a schematic structural diagram of a flange seat in a cutter suction dredger maintenance platform according to an embodiment of the present invention;

9 is a partial structural diagram of a flange seat in a cutter suction dredger maintenance platform according to an embodiment of the present invention;

10 is a schematic diagram of the upper platform body of the cutter suction dredger maintenance platform connected to the lower flange surface of the flange seat according to an embodiment of the present invention;

11 is a schematic diagram of an upper platform body connected to an upper flange surface of a flange seat in a cutter suction dredger maintenance platform according to an embodiment of the present invention;

12 is a reference schematic diagram of the upper platform body and the first rotating shaft seat of the cutter suction dredger maintenance platform according to the embodiment of the present invention;

13 is a reference schematic diagram of the installation of the first rotating shaft seat in the cutter suction dredger maintenance platform according to an embodiment of the present invention;

FIG14 is a schematic top view of a base and an extension platform of a cutter suction dredger maintenance platform according to an embodiment of the present invention;

15 is a side view of a lower maintenance platform in a maintenance platform of a cutter suction dredger according to an embodiment of the present invention;

16 is a schematic structural diagram of a base in a cutter suction dredger maintenance platform according to an embodiment of the present invention;

17 is a schematic diagram of the connection between the base, the connecting column and the supporting column in the cutter suction dredger maintenance platform according to an embodiment of the present invention;

18 is a schematic structural diagram of an extension platform in a cutter suction dredger maintenance platform according to an embodiment of the present invention;

19 is a schematic diagram of the connection between the lower platform body and the connecting columns and the supporting columns in the cutter suction dredger maintenance platform according to an embodiment of the present invention;

20 is a reference schematic diagram of the installation of the second rotating shaft seat in the cutter suction dredger maintenance platform according to an embodiment of the present invention;

21 is a schematic structural diagram of a connecting seat in a cutter suction dredger maintenance platform according to an embodiment of the present invention;

22 is a schematic diagram of supports and references during installation of the lower maintenance platform in the maintenance platform of the cutter suction dredger according to an embodiment of the present invention;

23 is a schematic top view of the installation of the lower maintenance platform of the cutter suction dredger maintenance platform according to the embodiment of the present invention;

24 is a schematic structural diagram of the lower maintenance platform and the upper maintenance receipt of the cutter suction dredger maintenance platform according to an embodiment of the present invention when they are installed;

25 is a schematic diagram of the installation of the connecting seat in the cutter suction dredger maintenance platform according to an embodiment of the present invention;

26 is a partial enlarged schematic diagram of the installation of the first rotating shaft seat and the second rotating shaft seat in the cutter suction dredger maintenance platform according to the embodiment of the present invention;

27 is a schematic cross-sectional view of the upper maintenance platform and the lower maintenance platform of the cutter suction dredger maintenance platform after installation, as shown in FIG. 27 .

In the figure:

100-gantry; 10-upper maintenance platform; 20-lower maintenance platform;

101-first ground sample line; 102-second ground sample line; 103-first tire frame surface;

11-upper platform body; 12-flange seat; 13-first rotating shaft seat; 14-locking seat;

111-platform flange surface; 112-test line; 121-upper flange surface; 122-lower flange surface; 123-square hole; 124-screw hole; 131-rotating part; 1311-first shaft hole; 132-extension part; 133-connecting part; 134-first shaft cylinder; 135-first ear plate; 136-first flat iron;

21-base; 22-extension platform; 23-lower platform body; 24-connection seat; 25-connection assembly; 26-code plate; 27-connection pipe;

211-first connecting ear plate; 212-hanging piece; 221-second connecting ear plate; 231-second rotating shaft seat; 2311-second shaft hole; 232-main body; 233-fixing part; 234-second shaft cylinder; 235-second ear plate; 236-second flat iron; 241-connecting column; 242-punching hole; 243-first surface; 244-second surface; 245-third surface; 246-auxiliary code plate; 251-support column; 252-connecting plate;

201-third ground sample line; 202-fourth ground sample line; 203-first center ground sample line; 204-second tire frame surface; 205-fifth ground sample line; 206-third tire frame surface; 207-second center ground sample line; 208-reference plane;

31-temporary support; 32-baseline frame; 33-wire rope; 34-wooden support; 35-high stool support; 301-first plumb line; 302-second plumb line; 303-ground; 304-third plumb line.

DETAILED DESCRIPTION

The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar parts or parts having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

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

In the description of the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

At present, in order to ensure the high efficiency of reamer maintenance in dredgers, a maintenance platform is usually provided to facilitate operators to stand and operate. However, most maintenance platforms are non-folding structures, which is not only inconvenient to store the platform in a non-maintenance state, but also not conducive to operators to perform efficient maintenance operations in a maintenance state. At the same time, due to the large number of medium and small components on the maintenance platform, the production, assembly and loading processes are relatively complicated, and the precision requirements are high. The original installation method cannot be applied to the maintenance platform with a more complex structure. Therefore, how to achieve fast and efficient maintenance of the reamer in the suction dredger, and ensure the stable storage of the platform in a non-maintenance state, and achieve high-precision and high-quality installation are problems that people in this field need to solve. The technical solution of this embodiment is further explained below in conjunction with the accompanying drawings and through specific implementation methods.

As shown in Figures 1 to 27, this embodiment provides a maintenance platform for a cutter suction dredger, which is installed on a gantry 100. The maintenance platform for the cutter suction dredger includes an upper maintenance platform 10 and a lower maintenance platform 20. The upper maintenance platform 10 includes an upper platform body 11 and a flange seat 12, and the lower maintenance platform 20 includes a lower platform body 23. The flange seat 12 is arranged on the gantry 100, and a first flange and a second flange are arranged on the upper step of the flange seat 12. One end of the upper platform body 11 is detachably connected to the first flange or the second flange, and the other end is rotatably connected to the lower platform body 23, and the lower platform body 23 can be locked on the upper platform body 11.

On the other hand, the installation method of the cutter suction dredger maintenance platform includes the following steps:

S1, assembling the upper maintenance platform 10 of the cutter suction dredger maintenance platform;

S2, assembling the structure of the lower maintenance platform 20 of the cutter suction dredger maintenance platform except the connecting seat 24;

S3, after the lower maintenance platform 20 is put on the tire, the flatness is adjusted and the reference line is marked for positioning;

S4, assemble and position the upper maintenance platform 10, and connect the upper maintenance platform 10 and the lower maintenance platform 20 using a true axis;

S5. Install the connection seat 24 on the locking seat 14 of the upper maintenance platform 10, lift and rotate the lower maintenance platform 20 until the connection seat 24 is matched and connected with the connection column 241 of the lower maintenance platform 20.

Specifically, in this embodiment, the upper maintenance platform 10 and the lower maintenance platform 20 can rotate relative to each other under the setting of the upper platform body 11 and the lower platform body 23 being rotatably connected, so that when the reamer is working normally, the lower platform body 23 can be rotated to a certain angle to avoid interference in its operation process, and when the reamer needs to be maintained, the lower platform body 23 is lowered, so that the operator can move from the upper platform body 11 to the lower platform body 23 to maintain the reamer. Further, the upper maintenance platform 10 is also provided with a flange seat 12, and the flange seat 12 is provided on the gantry 100, so as to ensure the stable installation of the entire maintenance platform on the hull. Further, the upper step of the flange seat 12 is provided with a first flange and a second flange, so that the upper maintenance platform 10 can be connected to the first flange or the second flange as needed, thereby expanding the scope of use, and can be correspondingly applied to reamers of different heights, and the maintenance space can also be controlled. Optionally, the lower platform body 23 can be locked on the upper platform body 11, thereby ensuring that the position of the lower platform body 23 can be fixed after rotating to a certain angle, thereby preventing the lower platform body 23 from falling during the operation of the reamer and affecting its normal operation and causing danger. Accordingly, the installation method of the cutter suction dredger maintenance platform adopts the method of assembling the lower maintenance platform 20 and the upper maintenance platform 10 separately and then installing them, and pre-installing the connecting seat 24 on the locking seat 14, and then installing them with the lower maintenance platform 20, which can effectively improve the installation accuracy and stability of the entire device. Similarly, using a true axis to connect the upper maintenance platform 10 and the lower maintenance platform 20 can also ensure the stability of the rotation of the two.

The specific structure of the cutter suction dredger maintenance platform in this embodiment is described below.

As shown in FIG. 1 and FIG. 2 , the cutter suction dredger maintenance platform in this embodiment is installed on the gantry 100, and includes an upper maintenance platform 10 and a lower maintenance platform 20. In this embodiment, one end of the upper maintenance platform 10 is connected to the gantry 100, and the other end is rotatably connected to the lower maintenance platform 20, so that the lower maintenance platform 20 can rotate relative to the upper maintenance platform 10. Further, in this embodiment, the lower maintenance platform 20 can be locked on the upper maintenance platform 10 after rotating a certain angle, so that the cutter suction dredger maintenance platform in this embodiment has two states, namely, a maintenance state and a locked state. Exemplarily, in the maintenance state, the lower maintenance platform 20 does not rotate, which is convenient for the reamer to be repaired. In the locked state, the lower maintenance platform 20 rotates relative to the upper maintenance platform 10 and is locked on the upper maintenance platform 10, so that the reamer can work normally without interfering with its operation.

As shown in Fig. 2 to Fig. 9, the upper maintenance platform 10 in this embodiment includes an upper platform body 11, a flange seat 12, a first rotating shaft seat 13 and a locking seat 14. Specifically, in this embodiment, the flange seat 12 is arranged on the gantry 100, and the first flange and the second flange are arranged on the step of the flange seat 12. One end of the upper platform body 11 can be detachably connected to the first flange or the second flange as needed, and the other end of the upper platform body 11 is rotatably connected to the lower platform body 23 through the first rotating shaft seat 13, and the lower platform body 23 can be locked on the upper platform body 11 through the locking seat 14. Exemplarily, the heights of the first flange and the second flange are different, so that the lower platform body 23 can be driven to maintain an operating state at different heights in the vertical direction through the connection between the upper platform body 11 and the first flange or the second flange, thereby expanding the scope of application and effectively avoiding interference with the operation process of the reamer.

As shown in FIG4 , in this embodiment, a platform flange is provided on the upper platform body 11, and a platform flange surface 111 is provided on the platform flange. Exemplarily, in this embodiment, the platform flange surface 111 can be matched and connected with the first flange or the second flange. Specifically, in this embodiment, the flatness of the platform flange surface 111 is ≤1mm, and the center length distance from the platform flange surface 111 to the first rotating shaft seat 13 is ±2mm, and the height direction is ±1mm. Combined with FIG4 and FIG5 , optionally, the upper platform body 11 is configured as a bending structure, including a horizontal section and an inclined section, and the locking seat 14 is provided on the horizontal section of the upper platform body 11, thereby being able to lock the position of the lower maintenance platform 20 above the upper platform body 11. Optionally, the inclined section of the upper platform body 11 is provided with stairs to facilitate the movement of operators.

As shown in FIG8 and FIG9, in this embodiment, an upper flange surface 121 is provided on the flange plate of the first flange in the flange seat 12, and a lower flange surface 122 is provided on the flange plate of the second flange. A square hole 123 is provided inside the first flange and the second flange, and a plurality of screw holes 124 are provided at intervals on the periphery of the square hole 123. Optionally, in this embodiment, the first flange and the second flange have the same structure, and the first flange is located above the second flange, and the second flange is more convexly arranged on the flange seat 12 than the first flange. Further, the platform flange surface 111 can be connected to the upper flange surface 121 and the lower flange surface 122 respectively. Exemplarily, the flange plate in the flange seat 12 in this embodiment is made of 60mm high-strength steel, and the size is set to 2850mm*1320mm. In other embodiments, the corresponding size can also be set as needed, which will not be repeated here. Further, the size of the square hole 123 is 2068mm*870mm. In other embodiments, the square hole 123 can also be filled with a steel plate, and the inside thereof has been sealed. Furthermore, there are 70 screw holes 124, and the diameter is set to 52mm. Optionally, to ensure that the subsequent upper maintenance platform 10 can be locked and sealed, the flatness of the upper flange surface 121 and the lower flange surface 122 is required to be ≤1mm, and the center deviation between the two flange plates is ≤1mm, and the parallelism is ≤2mm.

As shown in FIGS. 6 and 7 , the first rotating shaft seat 13 in this embodiment includes a rotating portion 131, an extending portion 132, a connecting portion 133, a first shaft cylinder 134, a first ear plate 135 and a first flat iron 136, and a first shaft hole 1311 is provided on the rotating portion 131. Specifically, the extending portion 132 is horizontally arranged so that the extending portion 132 can be connected in parallel with the upper surface of the lower maintenance platform 20 in the maintenance state, so that the operator can go downstairs or upstairs smoothly. Further, the connecting portion 133 is connected to the upper platform body 11, and the rotating portion 131 is used to rotate and connect the lower maintenance platform 20. As shown in FIG. 7 , optionally, the first shaft cylinder 134 is arranged to penetrate the first shaft hole 1311, and the first ear plates 135 are respectively attached to both ends of the first shaft cylinder 134. 27 , further, a first flat iron 136 is welded to the outer side of the first ear plate 135 on the side away from the lower maintenance platform 20 to ensure the stable installation of the subsequent true shaft, thereby improving the stability of the lower maintenance platform 20 and the upper maintenance platform 10 when they rotate relative to each other. For example, the installation deviation of the first ear plate 135 in this embodiment is ±1 mm.

As shown in Figures 14, 15, 23 and 27, the lower maintenance platform 20 in this embodiment includes a base 21, an extension platform 22, a lower platform body 23, a connecting seat 24, a connecting assembly 25, a code plate 26 and a connecting pipe 27. Optionally, the extension platform 22 is connected to the base 21 by a hinge, and one end of the lower platform body 23 is fixed to the base 21, and the other end is rotatably connected to the first rotating shaft seat 13. Optionally, the connecting seat 24 is fixed on the base 21, and can be locked and connected with the locking seat 14 by bolts, so as to realize the locking connection between the lower maintenance platform 20 and the upper maintenance platform 10. Further, the connecting assembly 25 is used to connect the base 21 and the lower platform body 23 to improve the connection strength between the two and avoid breaking and endangering the life safety of the operator. Exemplarily, the code plate 26 can be fixedly connected to the lower platform body 23 and the first rotating shaft seat 13 to ensure that the lower platform body 23 will not change position when the subsequent connecting seat 24 is installed.

Furthermore, in this embodiment, two lower platform bodies 23 are provided, and the two lower platform bodies 23 are spaced apart on the base 21 , and in this embodiment, the two lower platform bodies 23 are connected by a connecting pipe 27 to ensure the stability of the lower maintenance platform 20 and improve the accuracy of subsequent installation. Correspondingly, the upper platform body 11 is arranged in one-to-one correspondence with the lower platform body 23, and the flange seat 12, the first rotating shaft seat 13, and the locking seat 14 are all arranged in one-to-one correspondence with the upper platform body 11, and the connecting seat 24, the connecting assembly 25, and the code plate 26 are arranged in one-to-one correspondence with the lower platform body 23. Therefore, in this embodiment, a single flange seat 12, the upper platform body 11, the locking seat 14, and the first rotating shaft seat 13 are a group of upper connecting platforms, and a group of upper connecting platforms are respectively arranged on the left and right sides of the upper maintenance platform 10, and a single lower platform body 23, the connecting seat 24, the connecting assembly 25 and the code plate 26 are a group of lower connecting platforms, and a group of lower connecting platforms are respectively arranged on the left and right sides of the lower maintenance platform 20. The upper connecting platform and the lower connecting platform are arranged in correspondence to ensure the stability of the entire device during use. Exemplarily, the true axis can be penetrated and connected to the first rotating shaft seat 13 and the lower platform body 23 to realize the rotation connection between the two.

As shown in FIG16 , in this embodiment, a first connecting ear plate 211 and a hanging piece 212 are provided on the base 21. Optionally, the base 21 is set as a concave structure, and the groove is used to install the extension platform 22. Specifically, the inner wall of the groove is provided with a first connecting ear plate 211, so as to ensure a stable connection with the extension platform 22. Furthermore, two hanging pieces 212 are also arranged at intervals on the outer side of the base 21, so that the hanging equipment can pass through and connect the hanging pieces 212, and use the hanging pieces 212 to lift or turn over the base 21 to meet the corresponding process requirements. Combined with FIG18 , in this embodiment, a plurality of second connecting ear plates 221 are provided on the extension platform 22, and the second connecting ear plates 221 are arranged one by one with the first connecting ear plates 211, so as to achieve the stable placement of the extension platform 22 on the base 21 through the stable connection between the two.

As shown in FIG. 17 and FIG. 19-20, the lower platform body 23 includes a second rotating shaft seat 231, a main body 232, a fixing part 233, a second shaft cylinder 234, a second ear plate 235 and a second flat iron 236, and the second rotating shaft seat 231 is provided with a second shaft hole 2311. Specifically, the second rotating shaft seat 231 and the fixing part 233 are respectively located at the two ends of the main body 232, and the second rotating shaft seat 231 is rotatably connected with the first rotating shaft seat 13, thereby realizing the rotation setting between the lower platform body 23 and the upper platform body 11, and realizing the rotation effect between the lower maintenance platform 20 and the upper maintenance platform 10. Optionally, the top surface of the second rotating shaft seat 231 is set as a plane, so that the top surfaces of the second rotating shaft seat 231 and the first rotating shaft seat 13 are both planes, which is convenient for operators to pass. Further, the main body 232 is inclined, and a staircase is arranged on it, which is convenient for operators to move. Optionally, the fixing portion 233 is connected to the base 21 to achieve a stable connection between the lower platform body 23 and the base 21, so that when the lower platform body 23 rotates relative to the upper platform body 11, the base 21 can be driven to rotate synchronously.

As shown in FIG20, optionally, the second shaft cylinder 234 is provided through the second shaft hole 2311, and the second lugs 235 are respectively attached to the two ends of the second shaft cylinder 234. Further, the second flat iron 236 is welded on the outer side of the second lug 235 away from the first rotating shaft seat 13 to ensure the stable installation of the subsequent true shaft, thereby improving the stability of the lower maintenance platform 20 and the upper maintenance platform 10 when they rotate relative to each other. Exemplarily, in this embodiment, the installation deviation of the second lug 235 is ±1mm, and the concentricity of the two second lugs 235 is ≤3mm, and the half-width deviation is ±3mm. Combined with FIG27, in this embodiment, the code plate 26 can connect the first rotating shaft seat 13 and the second rotating shaft seat 231, so as to ensure that the positions of the two will not change in the locked state, and facilitate the installation of the connecting seat 24 on the lower platform body 23. As shown in FIG23, further, the left and right ends of the connecting pipe 27 are respectively connected to the two connecting seats 24, so as to ensure the stability of the two when installed on the lower platform body 23, and improve their installation accuracy, so as to ensure that the two can rotate synchronously.

As shown in Figures 17, 19, 21 and 22, in this embodiment, the connection seat 24 is also provided with a connection column 241, and the connection seat 24 is provided with a punching hole 242, a first surface 243, a second surface 244 and a third surface 245. As shown in Figure 26, the lower platform body 23 is subsequently provided with an auxiliary code plate 246. Optionally, in this embodiment, two connection columns 241 are provided, one is vertically arranged on the base 21, and the other is inclined and fixed on the lower platform body 23, and the connection seat 24 is respectively connected to the two connection columns 241. Exemplarily, when installing, after the two support columns 251 are preferentially arranged at the corresponding positions, the connection seat 24 is fixed to the locking seat 14, and the connection seat 24 is arranged with the connection column 241 by rotating the lower platform body 23, and then the length of the connection column 241 is adjusted to reach the matching value and then welded to the connection seat 24. As shown in FIG. 21 , in this embodiment, the punching hole 242 is determined according to the marking line, so that the position of the punching hole is pre-drawn to facilitate the accuracy of the subsequent punching. Furthermore, the verticality of the first surface 243, the second surface 244 and the third surface 245 are all controlled to be ≤1 mm. As shown in FIG. 26 , when boring the second shaft hole 2311 to ensure the stable installation of the true shaft, the auxiliary code plate 246 is required to ensure the accuracy of the boring, and the position of the auxiliary code plate 246 is adjusted as needed to avoid interference with the operation of the boring equipment.

Similarly, the connecting assembly 25 includes a support column 251 and a connecting plate 252. As shown in FIG. 22, in this embodiment, two support columns 251 are also provided, and one support column 251 is vertically provided on the base 21, and the other support column 251 is obliquely provided on the lower platform body 23. Exemplarily, the length of the support column 251 is less than the length of the connecting column 241, and the two are placed in parallel. Furthermore, both support columns 251 are connected to the connecting plate 252, so that through the provision of the connecting assembly 25, the connection strength between the base 21 and the lower platform body 23 can be further strengthened to prevent the base 21 from falling off, while improving the stability of the overall rotation of the lower maintenance platform 20.

As shown in Figures 22 to 25, in this embodiment, temporary supports 31 and base frames 32 can be used to support the lower platform body 23 to ensure the installation and connection of the relevant parts of the lower maintenance platform 20. At the same time, the two first shaft holes 1311, the two second shaft holes 2311, and the subsequent first shaft holes 1311 and second shaft holes 2311 can be aligned and tested by using steel wire ropes 33 to ensure the installation accuracy of the true shaft. As shown in Figure 25, when the upper maintenance platform 10 and the lower maintenance platform 20 are connected, the lower maintenance platform 20 and the upper maintenance platform 10 can be provided with stable support by the pad support 34 and the high stool support 35 to ensure the stability of the entire platform during the installation of the connecting seat 24.

The following is a detailed description of the installation method of the cutter suction dredger maintenance platform in this embodiment.

The installation method of the cutter suction dredger maintenance platform includes the following steps:

S1, assembling the upper maintenance platform 10 of the cutter suction dredger maintenance platform;

S2, assembling the structure of the lower maintenance platform 20 of the cutter suction dredger maintenance platform except the connecting seat 24;

S3, after the lower maintenance platform 20 is put on the tire, the flatness is adjusted and the reference line is marked for positioning;

S4, assemble and position the upper maintenance platform 10, and connect the upper maintenance platform 10 and the lower maintenance platform 20 using a true axis;

S5. Install the connection seat 24 on the locking seat 14 of the upper maintenance platform 10, lift and rotate the lower maintenance platform 20 until the connection seat 24 is matched and connected with the connection column 241 of the lower maintenance platform 20.

Further, step S1 includes:

S1.1, assemble the upper platform body 11, the flange seat 12 and the first rotating shaft seat 13 on the tire respectively;

S1.2, draw a ground sample line on the upper platform body 11, and hoist the first rotating shaft seat 13 on the upper platform body 11, and assemble it with the tire. After passing the inspection, remove the tire and put it into the support;

S1.3, the flange seat 12 is connected with the upper platform body 11 and the first rotating shaft seat 13, and then the whole is matched and connected and then painted.

For example, in this embodiment, the inner wall distance of the two upper platform bodies 11 is set to 5180mm, and the outer wall distance is set to 6120mm. As shown in FIG4 , each upper platform body 11 is marked with a test line 112 and points A and B, and in this embodiment, the upper platform body 11 is side-built with the longitudinal wall plate of the side L6120 as the base surface, and is separated from the tire after the tire and the first rotating shaft seat 13 are assembled. Specifically, the assembly of the upper platform body 11 mainly includes the following steps: setting up a tire frame with L±6120 longitudinal walls as shown in Figure 4 for tire loading. This process requires controlling the flatness of the tire frame surface, the flatness of L±5180 and the flatness of the top plate; after assembling the L±5180 longitudinal wall plate, marking the inspection line 112 according to the construction requirements, and checking the flatness before and after welding, and measuring and recording the distance between point A and point B; opening the bolt holes on the locking seat 14 at the top of the upper platform body 11 in advance to facilitate the subsequent connection with the connecting seat 24. At the same time, the distance between the top plate and the platform flange plate must be controlled during the assembly process; the platform flange plate needs to be installed after the structure is welded.

As shown in Figures 10 and 11, optionally, the flange plates of the first flange and the second flange in the flange seat 12 are pre-connected to the upper platform body 11 by bolts, and the flange plates are welded to the first flange and the second flange in sequence to ensure that the two flange plates are arranged in parallel, and the accuracy is checked before welding, and the accuracy is re-tested after welding, and the bolts are removed after passing the test. Exemplarily, in this embodiment, the flange seat 12 is side-built with the longitudinal wall plate L6120 on the side as the base surface, and after the upper platform body 11 and the first rotating shaft seat 13 are assembled, the flange plate pre-connected with it as a whole is welded, and then painted. Specifically, the assembly process of the flange seat 12 includes the following steps: erecting the tire frame with the longitudinal wall L±6120 on the side as the base surface, and controlling the flatness of the tire frame surface; drawing corresponding ground sample lines on the flange plate and the flange seat 12, and assembling the structure according to the ground sample line reference; the flange plate needs to be installed after the structure is welded.

As shown in FIG. 10 and FIG. 11 , further, the two flange plates are installed through two steps.

As shown in Figure 10, the first step of installation includes: welding the platform flange on the upper platform body 11 in advance, connecting the flange plate of the second flange to the platform flange plate by bolts, and locking the bolts; gradually moving the pre-connected flange plate on the upper platform body 11 closer to the position of the second flange, and pre-drawing the reference lines in the XY directions on the ground, and ensuring the parallel placement of the upper and lower working surfaces through the matching state; pre-welding the flange plate on the second flange, and checking the accuracy before welding.

As shown in FIG11 , the second step of installation includes: keeping the flange plate of the second flange in place, connecting the flange plate of the first flange to the platform flange, and locking the bolts; repeating the first step of installation according to the ground sample line benchmark until the flange plate is pre-welded to the first flange; controlling the welding sequence to prevent the flange plate from deforming during welding, and appropriately adding support plates; retesting the accuracy of the flange plate after welding, and removing the bolts after passing the test. In this way, the high-precision installation of the flange seat 12 can be completed.

As shown in FIG7 and FIG13, in this embodiment, the first rotating shaft seat 13 needs to be measured with a hanging hammer during installation, and the verticality can be determined by the first hanging hammer line 301. Specifically, the first rotating shaft seat 13 is side-built with the L5180 longitudinal wall plate in the middle of the ship as the base surface, and is separated from the tire after being assembled with the upper platform body 11. Specifically, the assembly process of the first rotating shaft seat 13 includes the following steps: erecting a tire frame with the L±5180 longitudinal wall as the base surface, and the horizontality of the tire frame surface needs to be ≤5mm, and the flatness needs to be ≤5mm; the first ear plate 135 is not installed first, and the first shaft cylinder 134 needs to erect the first flat iron 136 as shown in Figure 13, measure the verticality of the first shaft cylinder 134 through the first plumb line 301, and measure the radius deviation at both ends of the first shaft cylinder 134 respectively, control the deviation to be ≤1mm, and must be measured and controlled during the welding process, so that the first shaft cylinder 134 is welded last, and inspected before and after welding; the first ear plate 135 is installed after the first shaft cylinder 134 has qualified accuracy.

As shown in FIG. 12 and FIG. 13 , further, the first ground sample line 101 and the second ground sample line 102 are drawn on the tire frame, and the top surface of the tire frame is set as the first tire frame surface 103. Specifically, the assembly process of the upper platform body 11 and the first rotating shaft seat 13 includes the following steps: after the upper platform body 11 and the first rotating shaft seat 13 are respectively manufactured, the first rotating shaft seat 13 is hoisted to the tire frame of the upper platform body 11 and assembled in the tire according to the first ground sample line 101 and the second ground sample line 102; the verticality deviation of the first shaft cylinder 134 in the first rotating shaft seat 13 is adjusted to ≤1mm, and then the plumb bob is aligned with the second ground sample line 102, so that the first plumb bob line 301 is perpendicular to the second ground sample line 102; and then the size is positioned according to the drawing, and the accuracy is inspected before and after welding, and the whole is removed from the tire and placed in the support after passing the inspection.

Further, step S2 includes:

S2.1, assemble the base 21, the extension platform 22, the lower platform body 23 and the connecting seat 24 respectively on the tire;

S2.2, after the tire is turned over and upright, the base 21 is supported by a temporary support 31 and a baseline frame 32, and laser marking is performed;

S2.3, sequentially hoist the extension platform 22 and the lower platform body 23 away from the tire and roughly position and install them on the base 21;

S2.4. Use steel wires to penetrate the second shaft holes 2311 in the two lower platform bodies 23, respectively, and weld them after adjusting them into place.

Further, step S4 includes:

S4.1. Use the wire rope 33 to align the first axial hole 1311 in the upper maintenance platform 10 with the second axial hole 2311 in the lower maintenance platform 20, and adjust the concentricity and flatness of the two to complete the positioning;

S4.2. Use the code plate 26 instead of the wire rope 33 to fix the positions of the first rotating shaft seat 13 and the second rotating shaft seat 231 , and then bore holes and pass the true shaft to connect the upper maintenance platform 10 and the lower maintenance platform 20 .

As shown in FIG16, the third ground sample line 201, the fourth ground sample line 202 and the first center ground sample line 203 are marked on the base 21 of the lower maintenance platform 20 in this embodiment, and the base 21 is integrally reversed with the top surface of the base 21 as the base surface, and the welding is completed after the tire is turned over and upright, and the tire is assembled with the extension platform 22 and the lower platform body 23. Combined with FIG16 and FIG17, specifically, the assembly process related to the base 21 in the lower maintenance platform 20 includes the following steps: using the tire frame as shown in FIG16, and marking the third ground sample line 201 and the fourth ground sample line 202 corresponding to the first center ground sample line 203 and the connecting column 241; the base 21 is integrally reversed on the left and right sides; the installed base 21 is turned over and upright to center the first center ground sample line 203, and the connecting column 241 is installed on the tire, and the installation accuracy of the connecting column 241 is controlled, and the pre-welding and post-welding inspections are carried out to maintain its verticality ≤1/1000L.

Furthermore, in this embodiment, the extension platform 22 is also assembled in an overall reverse manufacturing manner, and the flatness of the extension platform 22 may be controlled during the assembly process and inspected after welding, and then the left and right second connecting ear plates 221 are matched and installed with the first connecting ear plates 211 in the base 21 to achieve a stable connection between the extension platform 22 and the base 21.

As shown in FIG20, optionally, the top surface of the tire frame used in the assembly process of the lower platform body 23 is set as the second tire frame surface 204, and the fifth ground sample line 205 is marked, and the verticality is judged by the second plumb line 302. Exemplarily, in this embodiment, the lower platform body 23 is built with the longitudinal wall of the side L±5150 as the base surface, and after leaving the tire, the whole is erected and assembled after the extension platform 22 and the base 21 are combined. Specifically, the assembly process of the lower platform body 23 includes the following steps: as shown in FIG19 and FIG20, the corresponding ground sample line is marked, the tire frame is erected, and the tire is mounted with the longitudinal wall of L±5150 as the base surface to control the flatness of the second tire frame surface 204; the second ear plate 235 is not installed first, and the second flat iron 236 is erected as shown in FIG20 before the second shaft cylinder 234 is welded, and the verticality of the second shaft cylinder 234 is detected by the second plumb line 302, and the radius difference at both ends of the second shaft cylinder 234 is measured respectively. , and it must be measured and controlled during the welding process, so that the second shaft cylinder 234 is welded last, and it must be inspected before and after welding; the second ear plate 235 is installed after the second shaft cylinder 234 has passed the accuracy test; according to Figure 19, the connecting column 241 and the supporting column 251 are positioned and installed, and the horizontality and verticality of the two are guaranteed to be ≤1/1000L, and the accuracy must be inspected before and after welding; after the welding is qualified, the lower platform body 23 can be separated from the tire and assembled with the base 21 on the tire.

Combined with FIG21, further, in this embodiment, the connection seat 24 needs to be built with the side longitudinal wall as the base surface during assembly, and after being painted separately, it is assembled on the connection column 241 during the general assembly of the upper maintenance platform 10 and the lower maintenance platform 20. Specifically, the assembly process of the connection seat 24 includes the following steps: according to the drawings, the upper tire is constructed with the side longitudinal wall as the base surface, and the flatness of the base surface of the tire frame is ensured to meet the requirements; the size and assembly positioning are positioned on the connection seat 24 as shown in FIG20, and the non-tire frame surface is marked as a sample punching point; then the bolt holes are pre-drilled for subsequent installation and use; finally, the connection seat 24 is painted separately, and directly participates in the general assembly of the upper maintenance platform 10 and the lower maintenance platform 20.

As shown in FIG22 and FIG23, the tire frame surface at this time is set as the third tire frame surface 206, and the second center ground sample line 207 is drawn, and the ground surface is set as the ground 303. Further, the assembly process of the lower maintenance platform 20 includes the following steps: after the base 21 is turned over and upright, the tire is positioned and sealed and fixed; then, as shown in FIG22, the lower platform body 23 is supported by a temporary support 31 and a base frame 32, and the accuracy is checked after the laser marking is completed; the extension platform 22 and the lower platform body 23 are assembled with the base 21, and the position of the lower platform body 23 is roughly positioned as shown in FIG23, and then the steel wire rope 33 is used to pass through the left and right second shaft cylinders 234 to center the two; the size of the remaining structure of the lower platform body 23 is positioned according to the drawings, and the verticality of the lower platform body 23 is controlled in real time. For example, during the welding process, it is necessary to detect the radius deviation and the change from the median of the second shaft cylinder 234. When the radius deviation is ≥3mm and the deviation from the median is ≥5mm, welding must be stopped and welding can only be continued after readjustment, and the accuracy must be checked after welding.

As shown in FIG. 24 to FIG. 27 , a reference plane 208 and a third plumb line 304 are provided. In this embodiment, when assembling the upper maintenance platform 10 and the lower maintenance platform 20, the lower maintenance platform 20 needs to be mounted first, and after the upper maintenance platform 10 and the lower maintenance platform 20 are connected, the true shaft is bored and installed, and then the connection seat 24 is installed on the lower maintenance platform 20. Specifically, the connection process of the upper maintenance platform 10 and the lower maintenance platform 20 includes the following steps:

The lower maintenance platform 20 is put on the tire. At this time, it is necessary to ensure that the support of the lower maintenance platform 20 is in place, and the overall flatness of the lower maintenance platform 20 needs to be adjusted within the tolerance requirement range. It is also necessary to survey and mark the reference lines of the overall group on the ground 303, including the center line, half-width line, length reference line, etc., to serve as the reference for the subsequent upper and lower overall group of the entire maintenance platform;

The upper maintenance platform 10 and the lower maintenance platform 20 are bored together. After the lower maintenance platform 20 is positioned on the tire, the upper platform is positioned together. The first shaft hole 1311 and the second shaft hole 2311 are brought close together as shown in FIG27, and the verticality and half width of the two are adjusted by using the third plumb line 304. At the same time, the height and half width of the platform flange surface 111 are adjusted according to the drawing. After the self-test is qualified, the connecting pipe 27 can be installed, and the accuracy is checked before welding. After the accuracy is confirmed to be qualified, the code plate 26 is added as shown in FIG26, and both sides need to be welded in turn during the welding process. Welding is performed. This process does not require retesting, but the radius tolerance of the first shaft hole 1311 and the second shaft hole 2311 must be controlled to be ≤1mm, and the code plate 26 must be fully welded to the platform structure. The accuracy must be checked again after welding. After the welding of the connecting pipe 27 and the code plate 26 is completed, the benchmark and the wire rope 33 are removed to prepare for boring. It is also necessary to ensure that the installation of the tooling reinforcement required for boring avoids damaging the platform support structure. After the boring is completed, the true shaft connection is started to connect the upper maintenance platform 10 and the lower maintenance platform 20, and the connection seat 24 is installed.

Install the connecting seat 24. After the true axis is inserted, place the lower maintenance platform 20 according to the reference plane 208 and the fifth ground sample line 205 as shown in Figure 24, and install the connecting seat 24 on the locking seat 14; then lift and rotate the lower maintenance platform 20 to gradually move it upward, and cut the connecting column 241 on site to make its end match the connecting seat 24. During this process, the cutting amount of the connecting column 241 should not exceed 10mm; after cutting in place, weld and report the integrity of the quality department before hoisting after welding. Thus, the installation of the entire cutter suction dredger maintenance platform is completed.

Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A cutter suction dredger maintenance platform, mounted on a gantry (100), characterized in that the cutter suction dredger maintenance platform comprises: An upper maintenance platform (10) and a lower maintenance platform (20), wherein the upper maintenance platform (10) comprises an upper platform body (11) and a flange seat (12), and the lower maintenance platform (20) comprises a lower platform body (23), wherein the flange seat (12) is arranged on the gantry (100), and a first flange and a second flange are arranged on the upper step of the flange seat (12), one end of the upper platform body (11) is detachably connected to the first flange or the second flange, and the other end is rotatably connected to the lower platform body (23), and the lower platform body (23) can be locked on the upper platform body (11). 2. The cutter suction dredger maintenance platform according to claim 1 is characterized in that a connecting seat (24) is provided on the lower platform body (23), and a locking seat (14) is provided on the upper maintenance platform (10), and the connecting seat (24) and the locking seat (14) are locked and connected by bolts. 3. The cutter suction dredger maintenance platform according to claim 1 is characterized in that one end of the upper platform body (11) is connected to a first rotating shaft seat (13), and one end of the lower platform body (23) is provided with a second rotating shaft seat (231), and the first rotating shaft seat (13) and the second rotating shaft seat (231) are rotatably connected. 4. The cutter suction dredger maintenance platform according to claim 1 is characterized in that the lower maintenance platform (20) further includes a base (21), two lower platform bodies (23) are provided, and the two lower platform bodies (23) are arranged on the base (21) at intervals, and the upper platform body (11) and the lower platform body (23) are arranged in a one-to-one correspondence. 5. The cutter suction dredger maintenance platform according to claim 4, characterized in that the lower maintenance platform (20) further comprises a connecting assembly (25), and the connecting assembly (25) is used to connect the base (21) and the lower platform body (23). 6. A method for installing a cutter suction dredger maintenance platform, characterized in that it comprises the following steps: S1. Assembling the upper maintenance platform (10) of the cutter suction dredger maintenance platform according to any one of claims 1 to 5; S2, assembling the structure of the lower maintenance platform (20) of the cutter suction dredger maintenance platform except the connecting seat (24); S3, after the lower maintenance platform (20) is mounted on the tire, the flatness is adjusted and the reference line is marked for positioning; S4, assembling and positioning the upper maintenance platform (10), and connecting the upper maintenance platform (10) and the lower maintenance platform (20) using a true axis; S5. Install the connecting seat (24) on the locking seat (14) of the upper maintenance platform (10), lift and rotate the lower maintenance platform (20) until the connecting seat (24) is matched and connected with the connecting column (241) of the lower maintenance platform (20). 7. The method for installing a cutter suction dredger maintenance platform according to claim 6, wherein step S1 comprises: S1.1. Assemble the upper platform body (11), the flange seat (12) and the first rotating shaft seat (13) on the tire respectively; S1.2, draw a ground sample line on the upper platform body (11), and hoist the first rotating shaft seat (13) on the upper platform body (11), and assemble it with the tire. After passing the inspection, remove the tire and put it into the support; S1.3, the flange seat (12) is connected to the upper platform body (11) and the first rotating shaft seat (13) and then painted after the whole is matched and connected. 8. The installation method of the cutter suction dredger maintenance platform according to claim 7 is characterized in that the flange plates of the first flange and the second flange in the flange seat (12) are pre-connected to the upper platform body (11) by bolts, and the flange plates are welded to the first flange and the second flange in sequence to ensure that the two flange plates are arranged in parallel, and the accuracy is checked before welding and re-tested after welding, and the bolts are removed after passing the test. 9. The method for installing a cutter suction dredger maintenance platform according to claim 6, wherein step S2 comprises: S2.1, assembling the base (21), the extension platform (22), the lower platform body (23) and the connecting seat (24) on the tire respectively; S2.2, after the tire is turned over and upright, the base (21) is supported by a temporary support (31) and a baseline frame (32), and laser marking is performed; S2.3, sequentially hoisting the extension platform (22) and the lower platform body (23) off the tire and roughly positioning and installing the base (21); S2.4. Use the steel wire rope (33) to pass through the second shaft holes (2311) in the two lower platform bodies (23) respectively, adjust them into place and then weld them. 10. The method for installing a cutter suction dredger maintenance platform according to claim 6, wherein step S4 comprises: S4.1. Use the steel wire rope (33) to align the first axial hole (1311) in the upper maintenance platform (10) with the second axial hole (2311) in the lower maintenance platform (20), and adjust the concentricity and flatness of the two to complete the positioning; S4.2. Use a code plate (26) instead of a steel wire rope (33) to fix the positions of the first rotating shaft seat (13) and the second rotating shaft seat (231), and then bore holes and pass a true shaft through them to connect the upper maintenance platform (10) and the lower maintenance platform (20).