Shielding main pump suction adapter mounting device

Abstract

The invention belongs to the field of nuclear power station shielding main pump installation, and particularly relates to a shielding main pump suction adapter installation device which comprises a movable platform assembly, a lifting bracket assembly, a fine adjustment jacking assembly and a lifting point assembly. The movable platform assembly is used for bearing and moving the lifting bracket assembly, the fine adjustment jacking assembly, the lifting point assembly and the suction adapter; the lifting bracket assembly is used for adjusting the suction adapter to ascend and descend between the main pump compartment ground and the main pump shell main flange face. The fine adjustment jacking assembly is used for adjusting the axial direction, the circumferential direction and the radial direction of the suction adapter. The lifting point assembly is used for lifting the whole suction adapter installation device. According to the invention, integrated hoisting can be realized, the adjustment work of the suction adapter can be quickly and conveniently completed, and meanwhile, the safety performance is improved.

Description

Technical Field

[0001] The invention belongs to the field of installation of a shielded main pump of a nuclear power plant, and in particular relates to an installation device for a suction adapter of a shielded main pump. Background Art

[0002] At present, AP1000 reactor units all use a main pump installation trolley (structure such as Figure 1 The main pump installation trolley has the functions of moving, rotating, lifting, lowering, and adjusting, and can complete the installation and removal of the main pump in a small space. As part of the main pump hydraulic components, the suction adapter also needs to be installed and removed with the help of the main pump installation trolley. However, this main pump installation trolley is subject to the on-site environment and has the following disadvantages:

[0003] 1. Unable to lift the whole unit to the main pump compartment

[0004] The main steel structure of the main pump installation trolley is divided into three layers. The length and width dimensions of each layer are approximately 2045x2032mm, the diagonal length is approximately 2882mm, and the outer circle dimension allowed to pass through the narrowest part of the main pump lifting channel is approximately 2084mm. It can be seen that the main pump installation trolley cannot be lifted as a whole to the main pump compartment.

[0005] 2. The installation of the trolley is complicated

[0006] The main pump installation trolley weighs 6985Kg and consists of the main structures such as the base assembly, middle ring assembly, top ring assembly, support assembly, reinforced back plate assembly, and jacking assembly. The main pump installation trolley has many parts and each part is heavy, which cannot be carried by manpower, and needs to be installed with a ring crane; the main pump installation trolley is divided into three layers with an overall height of 4473mm, so a large scaffolding needs to be set up when assembling the second and third layers; the mechanical adjustment range of the main pump installation trolley, such as vertical adjustment and circumferential adjustment, is small, the vertical adjustment range is ≤±0.2°, and the circumferential adjustment angle range is ≤±0.88°.

[0007] 3. The installation and debugging of the trolley takes a long time

[0008] According to the summary of the construction and operation stages, the installation and commissioning test of a single main pump installation cart requires at least 12 people and 4 days of work.

[0009] 4. The main pump installation trolley is not universal

[0010] Due to the different vertical support and jacking positions of the steam generator in the main pump compartment, the corresponding main pump installation trolley structure is different when designing the trolley, which is reflected in the different structures of the top ring, middle ring and base assembly of the main pump installation trolley. As a result, the main pump installation trolley needs to be disassembled and reinstalled due to the installation of different adapters in the same main pump compartment.

[0011] 5. Difficulty in maintenance of electrical and instrument components installed on the trolley

[0012] In addition to the mechanical equipment, the main pump installation cart's servo motors, strain gauges, displacement sensors, controllers and other control-related components are all imported components, which is not conducive to maintenance in the later stage.

[0013] Therefore, based on the above five points, it is necessary to invent a new shielded main pump suction adapter installation device, through which the installation of the shielded main pump suction adapter can be completed independently, conveniently and quickly. Summary of the invention

[0014] The purpose of the present invention is to provide a shielded main pump suction adapter installation device, which can realize integrated lifting, quickly and conveniently complete the adjustment of the suction adapter, and improve safety performance at the same time.

[0015] The technical solution to achieve the purpose of the present invention is:

[0016] A shielded main pump suction adapter installation device, the device comprises: a mobile platform assembly, a lifting bracket assembly, a fine-adjustment jacking assembly, and a hanging point assembly; the lifting bracket assembly, the fine-adjustment jacking assembly, and the hanging point assembly are installed in the mobile platform assembly, the fine-adjustment jacking assembly is installed on the lifting bracket assembly, the suction adapter is installed on the fine-adjustment jacking assembly, and the hanging point assembly is installed in the bolt hole of the on-site main pump pump casing flange; the mobile platform assembly is used to carry and move the lifting bracket assembly, the fine-adjustment jacking assembly, the hanging point assembly, and the suction adapter; the lifting bracket assembly is used to adjust the lifting and lowering of the suction adapter between the main pump compartment floor and the main pump pump casing main flange surface; the fine-adjustment jacking assembly is used to adjust the axial, circumferential, and radial directions of the suction adapter; the hanging point assembly is used to suspend the entire suction adapter installation device.

[0017] The mobile platform assembly includes: a load-bearing platform, a load-bearing mobile roller, a lower support, and a chain collection box. The lower support and the chain collection box are installed above the load-bearing platform, and the load-bearing mobile roller is installed below the load-bearing platform, and the load-bearing mobile roller is connected to the lower support.

[0018] The lifting bracket assembly includes: a chain drive assembly, a platform assembly, a column assembly, and a guide bearing seat; the bottom of the platform assembly is installed on the lower support member, the bottom surface of the platform assembly is connected to a cross support member, the center of the cross support member is connected to a connecting member, the guide bearing seat is connected to the connecting member, the column assembly is connected to the four upper end surfaces of the cross support member, and the chain drive assembly is connected to the four lower end surfaces of the cross support member.

[0019] The chain drive assembly includes: a servo motor, a worm gear reducer, a cycloidal pinwheel reducer, a driving sprocket, a driven sprocket, a ratchet, and a connecting plate; the cycloidal pinwheel reducer is installed on the connecting plate, and the servo motor, the worm gear reducer, the cycloidal pinwheel reducer, and the driving sprocket are driven and connected in sequence, and the driving sprocket is meshed with the driven sprocket; the servo motor rotates, driving the worm gear reducer and the cycloidal pinwheel reducer to rotate, and the torque is transmitted to the driving sprocket to rotate, thereby driving the driven sprocket to rotate.

[0020] The connecting plate is symmetrically provided with two square holes, through which the connecting plate is inserted into the end of the cross support member and fastened to the bottom of the cross support member.

[0021] The column assembly comprises a column, a chain guide seat, and a column mounting threaded hanging point. The upper part of the column assembly is connected to the main flange of the pump casing through the column mounting threaded hanging point, and the lower part is connected to the cross support member through bolts.

[0022] The fine-tuning lifting assembly includes: a worm gear lifting assembly, a radial adjustment assembly, a circumferential adjustment assembly, a suction adapter mounting base assembly, and a lighting fixture; the worm gear lifting assembly is connected to the platform assembly, the radial adjustment assembly and the circumferential adjustment assembly are installed on the top of the worm gear lifting assembly, the suction adapter mounting base assembly is installed on the radial adjustment assembly and the circumferential adjustment assembly, and the lighting fixture is installed on the suction adapter mounting base assembly.

[0023] The worm gear lifting assembly includes: a worm gear screw lifter, a reversing reducer, a reversing seat bracket, a coupling, a transmission shaft, a guide shaft, a circumferential adjustment assembly connecting flange, and an electric torque wrench; the reversing reducer is rotated by a handwheel or an electric torque wrench, and the reversing reducer transmits the torque to the worm gear screw lifter, thereby realizing the rising or falling of the worm gear screw lifter, and finally the suction adapter is axially lifted into place.

[0024] The radial adjustment assembly and the circumferential adjustment assembly include a heavy-duty rotating platform, a ball screw, a linear guide rail, a dial, a linear guide rail mounting base, and a mechanical limit baffle; the radial adjustment assembly uses a linear guide rail in conjunction with a ball screw to complete the horizontal movement function in two directions, is equipped with a moving reading scale, and has a locking function after movement, so that the cylindrical center line of the suction adapter coincides with the cylindrical line of the suction adapter mounting hole inside the pump casing; the circumferential adjustment assembly is equipped with an angle reading, and rotates through a worm gear mechanism, and has a locking function after the rotation is completed, so that the suction adapter bolt hole is aligned with the mounting threaded hole inside the pump casing.

[0025] The lifting point assembly includes: an auxiliary installation lifting point assembly, a lifting bracket assembly lifting lifting point assembly, and a lifting bracket assembly fixed lifting point assembly, all of which are installed on the main pump casing flange; the auxiliary installation lifting point assembly is used to lift the double-row chain from the ground to the pump casing thread, and assist in installing the chain on the lifting bracket assembly lifting lifting point assembly; the lifting bracket assembly lifting lifting point assembly is used to lift the lifting bracket assembly from the ground to the pump casing thread.

[0026] The beneficial technical effects of the present invention are:

[0027] 1. A shielded main pump suction adapter installation device provided by the present invention completes the reception, hoisting and ground transportation of the main pump suction adapter by designing a mobile platform assembly, thereby solving the problem that the original design cannot be hoisted as a whole, and can effectively reduce the construction period and improve the installation quality; by designing a lifting bracket assembly, the whole set of suction adapter installation tools and the suction adapter are transported from the ground of the main pump compartment to the upper space where the pump casing fits, thereby solving the problem that the original main pump installation trolley is complicated and unstable in lifting, and can improve the safety performance; by designing a rotating and translational workbench, the problem that the original main pump trolley has a small adjustment amount can be solved, making the adjustment work faster and more convenient; by adopting an integrated structure, the assembly time can be reduced, and the problem that the original main pump installation trolley has a long assembly time and is not universal can be solved.

[0028] 2. The present invention provides a shielded main pump suction adapter installation device, the maximum outer diameter of which does not exceed the main flange size of the main pump (2044.80mm), and can realize integrated lifting, reducing the installation time in the main pump compartment; the new suction adapter installation tool is convenient and safe to move in the main pump compartment, and the center of gravity of the suction adapter is much lower than the original main pump installation cart; the new suction adapter installation tool does not interfere with the SG support and is universal, and any main pump suction adapter can be installed without changing the structure; the original design of the main pump installation cart lifting device uses a compressive method, which is unstable, and the new suction adapter installation tool uses a tensile method to improve its stability; the new suction adapter installation tool has radial, axial, rotational and other functions, and a large adjustment range; the mechanical, electrical, and instrumentation components involved in the new suction adapter installation tool are all domestically produced equipment.

[0029] 3. The invention provides a canned main pump suction adapter installation device, which is easy to install and debug, and the maintenance hours are shortened from 1152 man-hours to 192 man-hours;

[0030] 4. The shielded main pump suction adapter installation device provided by the present invention is suitable for the installation of any main pump suction adapter, avoiding repeated assembly of the main pump installation trolley for two pumps in the same compartment;

[0031] 5. The shielded main pump suction adapter installation device provided by the present invention has an overall height reduced by 3870mm compared with the original one, and the overall translation process is more stable;

[0032] 6. The invention provides a canned main pump suction adapter installation device, which has a fixed rooting point above the center of gravity. Compared with the original design tool with a fixed rooting point below the center of gravity, it is more stable when rising or falling;

[0033] 7. The shielded main pump suction adapter installation device provided by the present invention is suitable for shielded main pumps of AP1000, CAP1000 and CAP1400 nuclear power projects, and can greatly speed up the installation progress of the shielded main pump during construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the overall structure of a canned main pump suction adapter installation device provided by the present invention;

[0035] Figure 2 A schematic diagram of the structure of a mobile platform component in a canned main pump suction adapter installation device provided by the present invention;

[0036] Figure 3 A schematic diagram of the structure of a lifting bracket assembly in a canned main pump suction adapter installation device provided by the present invention;

[0037] Figure 4 This is a schematic structural diagram of a chain drive assembly in a canned main pump suction adapter installation device provided by the present invention;

[0038] Figure 5 This is a schematic diagram of the structure of a cross support member and a connecting member in a canned main pump suction adapter installation device provided by the present invention;

[0039] Figure 6 A schematic diagram of the structure of a fine-adjusting jacking assembly in a canned main pump suction adapter installation device provided by the present invention;

[0040] Figure 7 This is a schematic structural diagram of a radial adjustment component and a circumferential adjustment component in a canned main pump suction adapter installation device provided by the present invention;

[0041] Figure 8 A schematic diagram of the structure of a turbine worm lifting assembly in a canned main pump suction adapter installation device provided by the present invention;

[0042] Fig. 9 This is a schematic diagram of the structure of an auxiliary installation hanging point assembly in a canned main pump suction adapter installation device provided by the present invention;

[0043] Fig.10A schematic diagram of the structure of a lifting point assembly of a lifting bracket assembly in a shielded main pump suction adapter installation device provided by the present invention.

[0044] In the figure: 1-mobile platform assembly; 2-lifting bracket assembly; 3-fine adjustment jacking assembly; 4-hanging point assembly; 5-load-bearing mobile roller; 6-lower support; 7-lifting chain collection box; 8-chain drive assembly; 9-platform assembly; 10-column assembly; 11-guide bearing seat; 12-servo motor; 13-worm gear reducer; 14-cycloidal pinwheel reducer; 15-driven sprocket; 16-connecting plate; 20-worm gear lifting assembly; 21-radial adjustment assembly; 22-circumferential adjustment assembly; 23-suction adapter 1. Device mounting base assembly; 24. Lighting fixture; 25. Linear guide rail; 26. Ball screw; 27. Linear guide rail mounting base; 29. ​​Scale plate; 30. Mechanical limit baffle; 31. Reversing reducer; 32. Worm gear screw lifter; 33. Reversing seat bracket; 34. Coupling; 35. Transmission shaft; 36. Guide shaft; 37. Circumferential adjustment assembly connecting flange; 41. Threaded sleeve; 42. Rotating shaft; 43. Thrust bearing; 44. Power ring; 45. Counterweight; 46. Double-row chain; 47. Ratchet; 48. Driving sprocket. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0046] like Figure 1 As shown, the present invention provides a shielded main pump suction adapter installation device, including: a mobile platform assembly 1, a lifting bracket assembly 2, a fine-adjustment jacking assembly 3, and a hanging point assembly 4. The lifting bracket assembly 2, the fine-adjustment jacking assembly 3, and the hanging point assembly 4 are installed in the mobile platform assembly 1, the fine-adjustment jacking assembly 3 is installed on the lifting bracket assembly 2, the suction adapter is installed on the fine-adjustment jacking assembly 3, and the hanging point assembly 4 is installed in the flange bolt hole of the main pump casing on site. The mobile platform assembly 1 is used to carry and move the lifting bracket assembly 2, the fine-adjustment jacking assembly 3, the hanging point assembly 4, and the suction adapter; the lifting bracket assembly 2 is used to adjust the lifting and lowering of the suction adapter between the main pump compartment floor and the main flange surface of the main pump casing; the fine-adjustment jacking assembly 3 is used to adjust the axial, circumferential, and radial directions of the suction adapter, so that the outer stop of the adapter is aligned with the inner stop inside the pump casing, and the adjustment in the circumferential direction can ensure that all bolt holes can be aligned; the hanging point assembly 4 is used to hoist the entire suction adapter installation device.

[0047] like Figure 2As shown, the mobile platform assembly 1 includes: a load-bearing platform, a load-bearing mobile roller 5, a lower support 6, and a chain collection box 7. The lower support 6 and the chain collection box 7 are installed above the load-bearing platform, and the load-bearing mobile roller 5 is installed below the load-bearing platform. There are 4 groups of load-bearing mobile rollers 5, each with a load-bearing capacity of 1.5t. They have load-bearing and mobile functions and are connected to the lower support 6 by bolt connection. The lower support 6 is mainly spliced ​​by high-strength aluminum alloy pipes, and a traction hanging point is designed at the bottom, which can be towed by hanging a hand winch. The upper part is designed with support legs for receiving the lifting bracket assembly 2; the chain collection box is mainly used to collect lifting chains.

[0048] like Figure 3 As shown, the lifting bracket assembly 2 includes: a chain drive assembly 8, a platform assembly 9, a column assembly 10, and a guide bearing seat 11. The bottom of the platform assembly 9 is installed on the lower support member 6, and the bottom surface of the platform assembly 9 is connected to a cross support member by bolts, and the center of the cross support member is connected to a connecting member by welding, such as Figure 5 shown.

[0049] The guide bearing seat 11 is connected to the connecting member by bolts, the column assembly 10 is connected to the four upper end surfaces of the cross support member by bolts, and the chain drive assembly 8 is connected to the four lower end surfaces of the cross support member by bolts.

[0050] like Figure 4 As shown, the chain drive assembly 8 includes: a servo motor 12, a worm gear reducer 13, a cycloidal pinwheel reducer 14, a driving sprocket 48, a driven sprocket 15, a ratchet 47, and a connecting plate 16. The connecting plate 16 is symmetrically provided with two square holes, through which the end of the cross support is inserted, and then bolted to the bottom of the cross support. The cycloidal pinwheel reducer 14 is installed on the connecting plate 16, and the servo motor 12, the worm gear reducer 13, the cycloidal pinwheel reducer 14, and the driving sprocket 48 are driven and connected in sequence, and the driving sprocket 48 is meshed with the driven sprocket 15; the servo motor 12 rotates, driving the worm gear reducer 13 and the cycloidal pinwheel reducer 14 to rotate, and the torque is transmitted to the driving sprocket 48 to rotate, thereby driving the driven sprocket 15 to rotate. The driving sprocket 48 and the driven sprocket 15 can be rotated by the servo motor 12, the worm gear reducer 13, and the cycloidal pinwheel reducer 14. The deceleration rotation of the driving sprocket 48 and the driven sprocket 15 can be achieved. The platform assembly 9 is the chassis of the lifting bracket assembly 2, and its main function is to provide a foundation to which the components are mounted by bolts.

[0051] The column assembly 10 includes a column, a chain guide seat, and a column mounting threaded hanging point. The upper part is connected to the main flange of the pump casing through the column mounting threaded hanging point, and the lower part is connected to the cross support member through bolts. Its main function is to provide a rooting point, and the whole set of tools is bolted to the main bolt hole under the lower pump casing. At the same time, an adjustment gasket can be added between the column assembly and the pump casing to adjust the parallelism between the top of the suction adapter and the pump casing flange. The guide bearing seat 11 is connected to the connecting member by bolts at the lower part, and its main function is to increase the rigidity of the worm gear lifting sleeve.

[0052] like Figure 6 As shown, the fine adjustment lifting assembly 3 includes: a worm gear lifting assembly 20, a radial adjustment assembly 21, a circumferential adjustment assembly 22, a suction adapter mounting base assembly 23, and a lighting fixture 24. The worm gear lifting assembly 20 is connected to the platform assembly 9, the radial adjustment assembly 21 and the circumferential adjustment assembly 22 are mounted on the top of the worm gear lifting assembly 20, the suction adapter mounting base assembly 23 is mounted on the radial adjustment assembly 21 and the circumferential adjustment assembly 22, and the lighting fixture 24 is mounted on the suction adapter mounting base assembly 23.

[0053] like Figure 8 As shown, the worm gear lifting assembly 20 includes: a worm gear screw lift 32, a reversing reducer 31, a reversing seat bracket 33, a coupling 34, a transmission shaft 35, a guide shaft 36, a circumferential adjustment assembly connecting flange 37, and an electric torque wrench. The worm gear lifting assembly 20 is connected to the platform assembly 9 as a whole by bolts, and the reversing reducer 31 is rotated by a hand wheel or an electric torque wrench, and the reversing reducer 31 transmits the torque to the worm gear screw lift 32, thereby realizing the rise or fall of the worm gear screw lift 32, and finally lifting the suction adapter axially into place.

[0054] like Figure 7 As shown, the radial adjustment assembly 21 and the circumferential adjustment assembly 22 include a heavy-duty rotating platform, a ball screw 26, a linear guide rail 25, a dial 29, a linear guide rail mounting base 27, and a mechanical limit baffle 30. The radial adjustment assembly 21 uses a linear guide rail 25 in conjunction with a ball screw 26 to complete the horizontal movement function in two directions, and is equipped with a moving reading scale. At the same time, it has a locking function after movement, so that the cylindrical center line of the suction adapter coincides with the cylindrical line of the suction adapter mounting hole inside the pump casing. The circumferential adjustment assembly 22 is equipped with an angle reading, and at the same time, it realizes rotation through a worm gear mechanism. After the rotation is completed, it has a locking function, so that the suction adapter bolt hole is aligned with the mounting threaded hole inside the pump casing, and the two are mounted on the top of the turbine worm lifting assembly 20 by bolts.

[0055] The suction adapter mounting base assembly 23 includes a cross base, a positioning guide block, a clamping block, and a target ball seat. Its main function is to provide a support for the suction adapter. At the same time, the design of the target ball seat can also be used to install the suction adapter using a laser tracker.

[0056] The lifting point assembly 4 includes: an auxiliary installation lifting point assembly, a lifting bracket assembly lifting lifting point assembly, and a lifting bracket assembly fixed lifting point assembly, all of which are installed on the main pump casing flange. Fig. 9 As shown, the auxiliary installation lifting point assembly includes a threaded sleeve 41, a thrust bearing 43, a rotating shaft 42, a force ring 44, and a miniature hoist, which is installed on the flange of the pump casing of the main pump. Its main function is to lift the double-row chain weighing 40Kg from the ground to the thread of the pump casing, and to assist in installing the chain on the lifting point assembly of the lifting bracket assembly. Fig.10 As shown, the lifting point assembly of the lifting bracket assembly includes a threaded sleeve, a thrust bearing, a rotating shaft, a double-row chain 46, a counterweight 45, and a pin shaft, which is installed on the pump casing flange of the main pump. Its main function is to lift the lifting bracket assembly from the ground to the pump casing thread.

[0057] The canned main pump suction adapter installation device provided by the present invention is used to install the suction adapter, and the specific steps are as follows:

[0058] Step 1: The new suction adapter installation device is assembled in a wide area (except for the lifting point assembly and double-row chain);

[0059] Step 2: hoist the suction adapter onto the new mounting device;

[0060] Step 3: Use lifting tools to lift the entire unit to the main pump compartment;

[0061] Step 4: Move the entire device to below the main pump;

[0062] Step 5, install the auxiliary installation hanging point assembly 38 to the threaded hole below the pump housing, use this hanging point assembly to complete the installation of the double-row chain assembly 46, and install the double-row chain 46 to the driving sprocket 48 and the driven sprocket 15, and at the same time move the ratchet 47 to the rising state;

[0063] Step 6, install four power cables and feedback cables on the servo motor 12 and the controller respectively, and both ends of the cables are designed with quick plug-in and foolproof design; the servo motor 12 rotates, driving the worm reducer 13 and the cycloid pinwheel reducer 14 to rotate, and the torque is transmitted to the active sprocket 48 to rotate. Once it rotates, the whole device can climb along the double-row chain;

[0064] Step 7: Turn on the power supply and lift the single servo motor to ensure that the double-row chain is in a taut state. Follow the same operation for the remaining three servo motors and double-row chains.

[0065] Step 8. Place a level gauge on the top of the suction adapter to check whether it is level. If the level exceeds 0.20 mm / m, adjust it through the servo motor;

[0066] Step 9. After the adjustment is completed, click on the position to reset on the display screen interface. At this time, it will be lifted upward as a reference.

[0067] Step 10, push the motor power button (All Motor) upward, and the four servo motors will act synchronously, so that the whole set of tools and the suction adapter will slowly move upward until the distance between the top of the column assembly 10 and the pump housing flange is 10 mm, then push the motor power button (All Motor) downward to stop lifting;

[0068] Step 11. Install the hexagon socket bolts in the fixed hanging point assembly and tighten slowly until the copper pad above the column assembly is in full contact with the flange surface below the pump casing.

[0069] Step 12: A person enters the aluminum alloy platform through the space between the column assemblies 10, and moves up and down on the platform through the worm gear screw lift 20, and realizes circular rotation and radial movement through the circumferential adjustment assembly 22 and the radial adjustment assembly 21;

[0070] Step 13: Complete the installation of all bolts and anti-loosening devices.

[0071] By using the shielded main pump suction adapter installation device provided by the present invention, the suction adapter is disassembled by referring to steps 1 to 11 for lowering and disassembling.

[0072] The present invention is described in detail above with reference to the accompanying drawings and embodiments, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention. The contents not described in detail in the present invention can adopt the existing technology.

Claims

1. A canned main pump suction adapter installation device, characterized in that: The device comprises: a mobile platform component (1), a lifting bracket component (2), a fine-adjusting jacking component (3), and a hanging point component (4); the lifting bracket component (2), the fine-adjusting jacking component (3), and the hanging point component (4) are installed in the mobile platform component (1), the fine-adjusting jacking component (3) is installed on the lifting bracket component (2), the suction adapter is installed on the fine-adjusting jacking component (3), and the hanging point component (4) is installed in the bolt hole of the flange of the main pump casing on site; the mobile platform component (1) is used to carry and move the lifting bracket component (2), the fine-adjusting jacking component (3), the hanging point component (4), and the suction adapter; the lifting bracket component (2) is used to adjust the lifting and lowering of the suction adapter between the main pump compartment floor and the main flange surface of the main pump casing; the fine-adjusting jacking component (3) is used to adjust the axial, circumferential, and radial directions of the suction adapter; and the hanging point component (4) is used to suspend the entire suction adapter installation device.

2. A canned main pump suction adapter installation device according to claim 1, characterized in that: The mobile platform assembly (1) comprises: a load-bearing platform, a load-bearing mobile roller (5), a lower support member (6), and a chain collection box (7); the lower support member (6) and the chain collection box (7) are installed above the load-bearing platform, the load-bearing mobile roller (5) is installed below the load-bearing platform, and the load-bearing mobile roller (5) is connected to the lower support member (6).

3. A canned main pump suction adapter installation device according to claim 2, characterized in that: The lifting bracket assembly (2) comprises: a chain drive assembly (8), a platform assembly (9), a column assembly (10), and a guide bearing seat (11); the bottom of the platform assembly (9) is mounted on the lower support member (6), the bottom surface of the platform assembly (9) is connected to a cross support member, the center of the cross support member is connected to a connecting member, the guide bearing seat (11) is connected to the connecting member, the column assembly (10) is connected to the four upper end surfaces of the cross support member, and the chain drive assembly (8) is connected to the four lower end surfaces of the cross support member.

4. A canned main pump suction adapter installation device according to claim 3, characterized in that: The chain drive assembly (8) comprises: a servo motor (12), a worm gear reducer (13), a cycloidal pinwheel reducer (14), a driving sprocket (48), a driven sprocket (15), a ratchet (47), and a connecting plate (16); the cycloidal pinwheel reducer (14) is mounted on the connecting plate (16); the servo motor (12), the worm gear reducer (13), the cycloidal pinwheel reducer (14), and the driving sprocket (48) are sequentially driven and connected, and the driving sprocket (48) is meshed with the driven sprocket (15); the servo motor (12) rotates, driving the worm gear reducer (13) and the cycloidal pinwheel reducer (14) to rotate, and the torque is transmitted to the driving sprocket (48) to rotate, thereby driving the driven sprocket (15) to rotate.

5. A canned main pump suction adapter installation device according to claim 4, characterized in that: The connecting plate (16) is symmetrically provided with two square holes, through which the connecting plate (16) is inserted into the end of the cross support member and is fastened to the bottom of the cross support member.

6. A canned main pump suction adapter installation device according to claim 3, characterized in that: The column assembly (10) comprises a column, a chain guide seat, and a column mounting threaded hanging point. The column assembly (10) is connected to the main flange of the pump casing at the top through the column mounting threaded hanging point, and is connected to the cross support member at the bottom through bolts.

7. A canned main pump suction adapter installation device according to claim 3, characterized in that: The fine adjustment lifting assembly (3) comprises: a worm gear lifting assembly (20), a radial adjustment assembly (21), a circumferential adjustment assembly (22), a suction adapter mounting base assembly (23), and a lighting fixture (24); the worm gear lifting assembly (20) is connected to the platform assembly (9), the radial adjustment assembly (21) and the circumferential adjustment assembly (22) are mounted on the top of the worm gear lifting assembly (20), the suction adapter mounting base assembly (23) is mounted on the radial adjustment assembly (21) and the circumferential adjustment assembly (22), and the lighting fixture (24) is mounted on the suction adapter mounting base assembly (23).

8. A canned main pump suction adapter installation device according to claim 7, characterized in that: The worm gear lifting assembly (20) comprises: a worm gear screw lifter (32), a reversing reducer (31), a reversing seat bracket (33), a coupling (34), a transmission shaft (35), a guide shaft (36), a circumferential adjustment assembly connecting flange (37), and an electric torque wrench; the reversing reducer (31) is rotated by a hand wheel or an electric torque wrench, and the reversing reducer (31) transmits torque to the worm gear screw lifter (32), thereby realizing the rise or fall of the worm gear screw lifter (32), and finally axially lifting the suction adapter into place.

9. A canned main pump suction adapter installation device according to claim 7, characterized in that: The radial adjustment assembly (21) and the circumferential adjustment assembly (22) comprise a heavy-duty rotating platform, a ball screw (26), a linear guide rail (25), a dial (29), a linear guide rail mounting base (27), and a mechanical limit baffle (30); the radial adjustment assembly (21) uses a linear guide rail (25) in conjunction with a ball screw (26) to complete the horizontal movement function in two directions, is equipped with a moving reading scale, and has a locking function after movement, so that the cylindrical center line of the suction adapter coincides with the cylindrical line of the suction adapter mounting hole inside the pump casing; the circumferential adjustment assembly (22) is equipped with an angle reading, and is rotated by a worm gear mechanism, and has a locking function after rotation is completed, so that the suction adapter bolt hole is aligned with the mounting threaded hole inside the pump casing.

10. A canned main pump suction adapter installation device according to claim 1, characterized in that: The lifting point assembly (4) comprises: an auxiliary installation lifting point assembly, a lifting bracket assembly lifting lifting point assembly, and a lifting bracket assembly fixed lifting point assembly, all of which are installed on the main pump casing flange; the auxiliary installation lifting point assembly is used to lift the double-row chain from the ground to the pump casing thread, and to assist in installing the chain on the lifting bracket assembly lifting lifting point assembly; the lifting bracket assembly lifting lifting point assembly is used to lift the lifting bracket assembly from the ground to the pump casing thread.

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