A process for installing a cutter shafting of a cutter suction dredger on water

Abstract

The present application relates to a kind of cutter luffing of cutter suction dredger, from the direction of ship bow to ship stern, the cutter luffing includes two driving motors, two clutches, gear box, 1# intermediate shaft, 1# intermediate bearing seat, 2# intermediate shaft, 2# intermediate bearing seat, 3# intermediate shaft, 3# intermediate bearing seat, 4# intermediate shaft, 4# intermediate bearing seat, 5# intermediate shaft, 5# intermediate bearing seat, cutter shaft, cutter bearing and cutter head in sequence;The present application is positioned cutter luffing theoretical center line by steel wire line, and sets up wire line frame, jig adjusting ring, dummy axle jig, dial gauge etc., and carries out centering to each equipment of cutter luffing;In addition, by the setting of dummy axle jig, adjusting gasket, temporary support device, it provides favorable condition for the centering adjustment of cutter luffing.The present application is easy to operate, strong reliability, can shorten ship construction cycle, and can extend the whole life cycle of complete system.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of centering installation of ship shafting, in particular to a water centering installation process for cutter shafting of a cutter suction dredger. BACKGROUND

[0002] As one of the core components of large cutter suction dredgers, the cutter shafting is becoming longer with the increasing dredging depth, and the load on the cutter shafting is becoming more complex and larger with the increasing power of the cutter. At present, no standard guidance on the centering of the cutter shafting of dredging equipment has been provided by research institutions at home and abroad, so the centering and installation of the cutter shafting of a cutter suction dredger, especially for a high-power cutter shafting, is particularly important. Therefore, it is necessary to provide a water centering installation process for cutter shafting of a cutter suction dredger, which is high in precision, easy to operate, long in service life and strong in reliability. SUMMARY

[0003] In view of the problems in the prior art, the present application provides a water centering installation process for cutter shafting of a cutter suction dredger, which is high in precision, easy to operate, long in service life and strong in reliability. The water centering installation process positions the theoretical center line of the shafting by steel wire positioning, and sets up a wire frame, a jig adjusting ring, a dummy shaft jig, a micrometer and the like to center each device of the cutter shafting. The process is simple to operate, time-saving and labor-saving, high in centering precision, convenient and fast, and can shorten the shipbuilding cycle.

[0004] The present application is implemented as follows: a water centering installation process for cutter shafting of a cutter suction dredger, which includes two driving motors, two clutches, a gear box, a 1# intermediate shaft, a 1# intermediate shaft bearing seat, a 2# intermediate shaft, a 2# intermediate shaft bearing seat, a 3# intermediate shaft, a 3# intermediate shaft bearing seat, a 4# intermediate shaft, a 4# intermediate shaft bearing seat, a 5# intermediate shaft, a 5# intermediate shaft bearing seat, a cutter shaft, a cutter bearing and a cutter head in sequence from the bow to the stern of the ship.

[0005] The water centering installation process comprises the following steps:

[0006] S1, placing the gear box on the base according to the requirements, and completing the installation of the cutter bearing;

[0007] S2, installing the alignment disc one and the alignment disc two in the front and rear end holes of the cutter bearing, welding two wire frames, namely wire frame one and wire frame two, at a distance before the gear box output flange and before the cutter bearing respectively, and drawing a straight line between the wire frame one and the wire frame two, which is an extension line of the center of the diameters of the front and rear end holes of the cutter bearing in the direction of the gear box, and reaches the front of the gear box output flange as the shafting axis;

[0008] S3, welding a support frame in front of the stay frame, aligning and fixing the jig adjusting ring one and the jig adjusting ring two on the support frame according to the shafting axis, then loading the dummy axle jig into the jig adjusting ring one and the jig adjusting ring two, aligning and fixing the dummy axle jig according to the shafting axis by the alignment jacks of the jig adjusting ring one and the jig adjusting ring two, and checking again to meet the requirements;

[0009] S4, measuring and adjusting the gear box output flange by the dial gauge one and the dial gauge two, so that the concentricity and the tortuosity of the dummy axle jig meet the requirements, then fixing, and checking again to meet the requirements; meanwhile, determining the center points of each intermediate bearing seat of the reamer shafting, installing the bearing seat base according to the center points as the reference, ensuring the height and related geometric dimensions, and welding the bearing seat base;

[0010] S5, placing each intermediate bearing seat on the bearing seat base, determining the position and height of each intermediate bearing seat according to the shafting axis, then fixing, and checking again to meet the requirements;

[0011] S6, removing the intermediate bearing seat close to the reamer shaft, then installing the reamer shaft, and reinstalling the intermediate bearing seat close to the reamer shaft after the reamer shaft is installed in place;

[0012] S7, installing one intermediate shaft close to the reamer shaft on the ship, and installing and connecting the remaining four intermediate shafts into a whole on the wharf and then on the ship;

[0013] S8, checking the whole reamer shafting after installation to meet the requirements, then installing the water flushing cavity, and installing the reamer head after the reamer shafting is running.

[0014] In the above technical solution, preferably, before the waterborne centering installation, the reamer frame is in a storage state, there is no significant ballast change on the ship, and the reamer shafting area stops the vibrational work.

[0015] In the above technical solution, preferably, in step S2, the stay frame one is welded between the gear box output flange and the dummy axle jig, and the stay frame two is welded in front of the reamer bearing at 900-1100 mm.

[0016] In the above technical solution, preferably, in step S2, when the steel wire is drawn, the steel wire with a diameter of φ0.5 mm and a unit weight of 0.0154 N / m is selected, the steel wire drawing force is 25 kg, and the straightness of the steel wire is considered, the deflection is corrected according to the positions of the intermediate bearing seats of the reamer shafting, and the straightness of the reamer shafting is ensured.

[0017] In the above technical solution, preferably, in step S3, the dummy axle jig is located at 200-300 mm in front of the gear box output flange.

[0018] In the above technical solution, preferably, in step S3, the structure of the mold adjusting ring one and the mold adjusting ring two is same, and each includes an adjusting disc, a through hole is arranged at the center of the adjusting disc for the false shaft mold to pass through, a plurality of adjusting seats are uniformly distributed on one side of the adjusting disc, and a locating thimble is threadedly connected to the adjusting seat and points to the center of the adjusting disc.

[0019] In the above technical solution, preferably, in step S4, when the gear box output flange is measured and adjusted by the dial gauge one and the dial gauge two, the dial gauge one and the dial gauge two are installed on a magnetic table seat, the magnetic table seat is placed at the detection reference position of the outer circumferential surface of the gear box output flange, the measuring head of the dial gauge one is pressed on the end surface of the false shaft mold which is perpendicular to the axial direction of the dial gauge one, and the measuring head of the dial gauge two is pressed on the end surface of the false shaft mold which is parallel to the axial direction of the dial gauge two.

[0020] In the above technical solution, preferably, in steps S4 and S5, when the gear box output flange and each intermediate bearing seat are fixed, the fixing can be performed by means of a gasket and drilling and tapping.

[0021] The application has the advantages and positive effects that:

[0022] The installation process of the cutter shafting of the cutter suction dredger has the advantages that: ①the steel wire positioning is used to position and measure the theoretical center line of the cutter shafting, which is simple in operation and saves time and labor; ②the four intermediate shafts are connected into a whole on the wharf, and then are installed on the ship and connected into a whole, which is high in accuracy, convenient and fast, and can shorten the shipbuilding period; and ③the straight line centering method is adopted, so that the center line of the cutter shafting and the center line of the bearing tend to be consistent in the working state, the bearings are uniformly worn in the circumferential direction, the cutter shafting and each equipment are in good working condition, there is no abnormal vibration and noise, and each bearing has no obvious heating phenomenon, which meets the design requirements. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is the main view of the total arrangement of the cutter shafting provided by the embodiment of the application;

[0024] Figure 2 is the plan view of the total arrangement of the cutter shafting provided by the embodiment of the application;

[0025] Figure 3 is the centering axis diagram of the cutter shafting (without installing the false shaft mold) provided by the embodiment of the application;

[0026] Figure 4 is the schematic diagram of installing the false shaft mold on the mold adjusting ring provided by the embodiment of the application;

[0027] Figure 5 is the diagram of measuring the gear box output flange by the dial gauge provided by the embodiment of the application;

[0028] Figure 6 These are the installation diagrams of the intermediate bearing seats provided in the embodiments of the present invention;

[0029] Figure 7 This is an installation diagram of the reamer shaft provided in an embodiment of the present invention;

[0030] Figure 8 This is an installation diagram of the intermediate shaft provided in an embodiment of the present invention.

[0031] In the diagram: 1. Drive motor; 2. Gearbox; 3. Intermediate shaft #1; 4. Intermediate bearing housing #1; 5. Intermediate shaft #2; 6. Intermediate bearing housing #2; 7. Intermediate shaft #3; 8. Intermediate bearing housing #3; 9. Intermediate shaft #4; 10. Intermediate bearing housing #4; 11. Intermediate shaft #5; 12. Intermediate bearing housing #5; 13. Auger shaft; 14. Auger bearing; 15. Auger head; 16. Cable tray structure; 17. Alignment disc one; 18. Alignment disc two; 19. Cable puller frame one; 20. Cable puller frame two; 21. Fixture adjustment ring one; 22. Fixture adjustment ring two; 23. Dummy shaft fixture; 24. Dial indicator one; 25. Dial indicator two; 26. Adjustment disc; 27. Adjustment seat; 28. Alignment set screw; 29. ​​Steel wire. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0033] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] Example

[0036] This embodiment provides a process for aligning and installing the cutter shaft system of a cutter suction dredger on water, such as...Figure 1 and Figure 2 As shown in the figure, from the bow to the stern, the reamer shaft system includes two driving motors 1, two clutches, a gear box 2, a 1# intermediate shaft 3, a 1# intermediate bearing seat 4, a 2# intermediate shaft 5, a 2# intermediate bearing seat 6, a 3# intermediate shaft 7, a 3# intermediate bearing seat 8, a 4# intermediate shaft 9, a 4# intermediate bearing seat 10, a 5# intermediate shaft 11, a 5# intermediate bearing seat 12, a reamer shaft 13, a reamer bearing 14 and a reamer head 15.

[0037] Before the installation of the water-based calibration, the reamer frame is in the storage state, there is no significant change in the ballast on the ship, and the reamer shaft system area stops the vibrational work.

[0038] As shown in the figure, the water-based calibration installation process includes the following steps: Figures 3 to 8 S1, place the gear box 2 on the base as required, and install the reamer bearing 14.

[0039] S2, install the alignment disc 1 17 and the alignment disc 2 18 in the front and rear holes of the reamer bearing 14, respectively, weld the wire frame 1 19 between the gear box 2 output flange and the dummy shaft jig 23, and weld the wire frame 2 20 at about 1000mm in front of the reamer bearing 14; and use a steel wire 29 to pull a straight line between the wire frame 1 19 and the wire frame 2 20, which is an extension line with the center of the inner diameter of the front and rear holes of the reamer bearing 14 as the reference to the gear box 2 direction, to the front of the gear box 2 output flange, as the shaft system axis; as shown in the figure.

[0040] Figure 3

[0041] When pulling the wire, the steel wire 29 is selected to be φ0.5mm, the unit weight of the steel wire 29 is 0.0154N / m, the pulling force of the steel wire 29 is 25kg, and the straightness of the steel wire 29 is considered when pulling the wire, and the deflection is corrected according to the positions of the intermediate bearing seats of the reamer shaft system to ensure the straightness of the reamer shaft system.

[0042] S3, weld the support frame on the bridge structure 16 in front of the wire frame 1 19, align and fix the jig adjustment ring 1 21 and the jig adjustment ring 2 22 on the support frame according to the shaft system axis, then install the dummy shaft jig 23 into the jig adjustment ring 1 21 and the jig adjustment ring 2 22, and align and fix the dummy shaft jig 23 according to the shaft system axis by using the alignment top wire 28 of the jig adjustment ring 1 21 and the jig adjustment ring 2 22, and then check again to meet the requirements; the dummy shaft jig 23 is located at 200mm-300mm in front of the gear box 2 output flange. As shown in the figure. Figure 4

[0043] ​​​The structure of the jig adjusting ring one 21 and the jig adjusting ring two 22 is same, and each includes an adjusting disc 26, the center of the adjusting disc 26 is provided with a through hole for the false shaft jig 23 to pass through, a plurality of adjusting seats 27 are uniformly distributed on one side of the adjusting disc 26, and a locating jackscrew 28 is threadedly connected to the adjusting seat 27 and points to the center of the adjusting disc 26.

[0044] S4, the dial gauge one 24 and the dial gauge two 25 are erected on the magnetic table seat, the magnetic table seat is placed at the detection reference position of the outer circumferential surface of the output flange of the gear box 2, the measuring head of the dial gauge one 24 is pressed on the end surface of the false shaft jig 23 which is perpendicular to the axial direction of the dial gauge one 24, and the measuring head of the dial gauge two 25 is pressed on the end surface of the false shaft jig 23 which is parallel to the axial direction of the dial gauge two 25. As shown in the figure. Figure 5

[0045] The output flange of the gear box 2 is measured and adjusted by the dial gauge one 24 and the dial gauge two 25, so that the concentricity and the tortuosity of the output flange of the gear box 2 and the false shaft jig 23 meet the technical requirements of the drawing, and then the output flange of the gear box 2 is fixed. The fixing can be performed by using the gaskets and drilling and tapping, and then the fixing is verified to meet the requirements. Meanwhile, the center points of the five intermediate bearing seats (1# intermediate bearing seat 4, 2# intermediate bearing seat 6, 3# intermediate bearing seat 8, 4# intermediate bearing seat 10 and 5# intermediate bearing seat 12) of the reamer shaft system are determined, the bearing seat bases are installed based on the center points, the heights and related geometric dimensions are ensured, and the bearing seat bases are welded and fixed.

[0046] S5, the five intermediate bearing seats are placed on the bearing seat bases, the positions and heights of the five intermediate bearing seats which meet the requirements of the drawing are determined according to the shaft line of the shaft system, and then the five intermediate bearing seats are fixed. The fixing can be performed by using the gaskets and drilling and tapping, and then the whole is verified to meet the requirements. As shown in the figure. Figure 6

[0047] S6, the 5# intermediate bearing seat 12 is removed, the reamer shaft 13 is installed, and then the 5# intermediate bearing seat 12 is reinstalled and fixed after the reamer shaft 13 is installed in place. As shown in the figure. Figure 7

[0048] S7, the 5# intermediate shaft 11 is installed on the ship, and the remaining four intermediate shafts (1# intermediate shaft 3, 2# intermediate shaft 5, 3# intermediate shaft 7 and 4# intermediate shaft 9) are connected into a whole on the wharf and then installed on the ship and connected into a whole. As shown in the figure. Figure 8

[0049] S8, the whole reamer shaft system which is installed is verified to meet the requirements, the water flushing cavity is installed, the reamer head 15 is installed after the reamer shaft system is moved, and records should be made during the installation of the reamer shaft system.

[0050] ​​​​The present application measures and aligns the theoretical center line of the reamer shafting by the steel wire 29, which is simple in operation, time and labor saving; the four intermediate shafts are connected into a whole on the wharf, installed on the ship and connected into a whole, which is high in centering accuracy, convenient and fast, and can shorten the shipbuilding period; the linear centering method is adopted, so that the center line of the reamer shafting and the center line of the bearing are consistent in the working state, the bearing is uniformly worn in the circumferential direction, the reamer shafting and each equipment are in good working condition, there is no abnormal vibration and noise, and each bearing has no obvious heating phenomenon, which meets the design requirements.

[0051] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part or all of the technical features, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the present application embodiment.

Claims

1. A cutter shafting on-water alignment installation process for a cutter suction dredger, from the bow to the stern, the cutter shafting sequentially comprises two driving motors, two clutches, a gear box, a 1# intermediate shaft, a 1# intermediate bearing seat, a 2# intermediate shaft, a 2# intermediate bearing seat, a 3# intermediate shaft, a 3# intermediate bearing seat, a 4# intermediate shaft, a 4# intermediate bearing seat, a 5# intermediate shaft, a 5# intermediate bearing seat, a cutter shaft, a cutter bearing and a cutter head; The waterborne school installation process is characterized in that, comprising the following steps: S1, placing the gear box on the base according to requirements, and installing the cutter bearing; S2, installing alignment disc one and alignment disc two in the front and rear end holes of the cutter bearing, welding two pull line racks, namely pull line rack one and pull line rack two, in front of the gear box output flange and in front of the cutter bearing at a distance, and pulling a straight line between pull line rack one and pull line rack two, the straight line is an extension line from the center of the diameters of the front and rear end holes of the cutter bearing to the direction of the gear box, to the front of the gear box output flange, as the shafting axis; when pulling the line, the steel wire is selected to be φ0.5mm, the unit weight of the steel wire is 0.0154 N / m, the pulling force of the steel wire is 25kg, and the straightness of the steel wire is considered when pulling the line, the deflection is corrected according to the positions of the intermediate bearing seats of the cutter shafting, and the straightness of the cutter shafting is ensured; S3, welding a support rack in front of pull line rack one, adjusting jig ring one and jig ring two are aligned and fixed on the support rack according to the shafting axis, then the dummy shaft jig is installed in jig ring one and jig ring two, the dummy shaft jig is aligned and fixed according to the shafting axis by the alignment jackscrews of jig ring one and jig ring two, and is checked again to meet the requirements; jig ring one and jig ring two are the same in structure, and each comprises an adjusting disc, a through hole for the dummy shaft jig is arranged in the center of the adjusting disc, a plurality of adjusting seats are uniformly distributed on one side of the adjusting disc, and an alignment jack screw pointing to the center of the adjusting disc is threadedly connected to each adjusting seat; S4, the concentricity and tortuosity of the gear box output flange and the dummy shaft jig are measured and adjusted by using the dial gauges one and two, then the gear box output flange is fixed, and is checked again to meet the requirements; meanwhile, the center points of the intermediate bearing seats of the cutter shafting are determined, the bearing seat bases are installed taking the center points as the reference, the heights and related geometric dimensions are ensured, and the bearing seat bases are welded; when the gear box output flange is measured and adjusted by using the dial gauges one and two, the dial gauges one and two are installed on the magnetic table seat, the magnetic table seat is placed at the detection reference position of the outer circumferential surface of the gear box output flange, the measuring head of the dial gauge one is pressed on the end surface of the dummy shaft jig perpendicular to the axial direction of the dummy shaft jig, and the measuring head of the dial gauge two is pressed on the end surface of the dummy shaft jig parallel to the axial direction of the dummy shaft jig; S5, the intermediate bearing seats are placed on the bearing seat bases, the positions and heights of the intermediate bearing seats are determined according to the shafting axis, then the intermediate bearing seats are fixed, and are checked again as a whole to meet the requirements; S6, the intermediate bearing seat close to the cutter shaft is dismounted, then the cutter shaft is installed, and the intermediate bearing seat close to the cutter shaft is reinstalled in place after the cutter shaft is installed in place. S7, one of the intermediate shafts near the reamer shaft is installed on the ship, and the remaining four intermediate shafts are connected into a whole on the wharf and then installed on the ship and connected into a whole; S8, the entire reamer shafting after installation is checked as a whole to meet the requirements, so that the center line of the reamer shafting and the center line of the bearing tend to be consistent in the working state, the bearing wears uniformly in the circumferential direction, and then the water flushing cavity is installed, and the reamer head is installed after the reamer shafting is moved.

2. Cutter ladder shafting on-board alignment installation process for a cutter suction dredger as claimed in claim 1, characterized in that, Before the waterborne centering installation, the reamer frame is in a storage state, there is no significant ballast change on the ship, and the reamer shafting area stops the vibratory work.

3. Cutter ladder shafting on-board alignment installation process for a cutter suction dredger as claimed in claim 1, characterized in that, In step S2, the tensioner frame one is welded between the gear box output flange and the dummy shaft jig, and the tensioner frame two is welded at 900-1100 mm in front of the reamer bearing.

4. The cutter ladder shafting on-water alignment installation process for a cutter suction dredger as claimed in claim 1, characterized in that, In step S3, the dummy shaft jig is located 200-300 mm in front of the gear box output flange.

5. The cutter ladder shafting on-water alignment installation process for a cutter suction dredger as claimed in claim 1, characterized in that, In steps S4 and S5, when the gear box output flange and each intermediate bearing seat are fixed, the fixing can be performed by means of shims and drilling and tapping.

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