A rail beam foundation installation tool for large equipment hoisting construction and a construction method

Abstract

The application discloses a rail beam foundation installation tool for hoisting construction of large equipment and a construction method, wherein the auxiliary device comprises displacement plates, universal wheels and support plates; the two displacement plates are symmetrically distributed left and right and are connected together through a connecting rod; the universal wheels are arranged at the bottom of the displacement plates; the screw rods are threadedly connected to the middle of the bottom surface of the displacement plates; and the support plates are arranged at the top of the screw rods. The application is suitable for hoisting operation of large equipment such as a generator stator, a gas turbine module, a high and medium pressure cylinder and a transformer in the power construction industry, and can complete hoisting of large equipment with different installation heights by adjusting the overhead height of the rail beam and the installation height of the portal, has small land occupation, is convenient to disassemble and assemble, has no impact during the hoisting process, and is safe and stable.

Description

Technical Field

[0001] This invention relates to a method for installing track beams, and more particularly to a tool and method for installing track beam foundations for hoisting large equipment. Background Technology

[0002] In the hoisting of ultra-large and ultra-heavy equipment such as generators, gas turbines, and high- and intermediate-pressure cylinders in thermal power plants, hydraulic lifting devices are often used in conjunction with overhead cranes or hydraulic lifting devices in conjunction with gantry cranes. In recent years, during the construction of some coal-fired and gas-fired power units, owners, in an effort to save costs, designed the overhead cranes in the turbine building to be relatively small, failing to consider the hoisting and positioning of generators and gas turbines during construction. Construction units had to find alternative methods to complete the hoisting of these ultra-large pieces of equipment. To solve the hoisting problem of such large equipment, the company utilized its existing gantry cranes and hydraulic lifting devices, and through multiple trials and upgrades, added components such as track supports and column supports, thus perfecting a hoisting system. After several practical applications, it has achieved certain results. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and to complete the hoisting of large equipment at different positioning heights by adjusting the overhead height of the track beam and the installation height of the gantry, with a small footprint and convenient assembly and disassembly.

[0004] The technical solution adopted by this invention to solve the technical problem is as follows:

[0005] A track beam foundation installation tool for hoisting and constructing large equipment includes a displacement plate, casters, and a support plate. There are two displacement plates, which are symmetrically distributed on the left and right, and the two displacement plates are connected together by a plug rod. The bottom of the displacement plate is provided with a caster, and the middle of the bottom surface of the displacement plate is connected to a screw rod by a thread. The top of the screw rod is provided with a support plate.

[0006] The displacement plates are distributed in an L-shape, and a handle is provided on the left side of the top of the displacement plates.

[0007] The displacement plate is provided with a positioning sleeve at its end, and the insertion rod passes through the positioning sleeves of the two displacement plates and is fixedly connected together by a tightening bolt.

[0008] A through hole is drilled in the middle of the bottom surface of the displacement plate, and a nut is fixedly connected below the through hole. The screw passes through the through hole and is connected to the nut by threads.

[0009] The cross-section of the support plate is circular.

[0010] The construction method for a track beam foundation installation tool for hoisting large equipment includes the following steps:

[0011] S1. Construction Preparation:

[0012] ① Conduct a site survey and select the necessary equipment, machinery, materials, and tools for hoisting according to requirements;

[0013] ② Locate the foundation and determine the installation position of the track support columns; before installation, a 4600mm×1800mm steel track plate needs to be laid under each column to increase the load-bearing area.

[0014] S2. Installation of the column assembly:

[0015] ① According to the installation requirements, select the appropriate column for installation. Select three-section columns and combine them together with high-strength bolts. The bolt tightening torque is 800 NM. Combine them into a total of 6 columns with a diameter of 12000 mm for use.

[0016] ② Lay a roadbed plate on each of the 6 prepared foundations. The center of the roadbed plate should be aligned with the pre-marked center line. The surface of the roadbed plate should be flat and clean and should not be tilted. If the roadbed plate is uneven, the foundation below should be leveled again. The roadbed plate should not be suspended in the air.

[0017] ③ Install the assembled columns on the roadbed plate. Lift the columns vertically and place them in the center of the roadbed plate. Pull the guy ropes from three directions and adjust the verticality of the columns at the same time. The verticality should not exceed 10mm.

[0018] ④ Install displacement plates between the bottom of the column and the roadbed plate, and connect the two displacement plates together with insert rods;

[0019] ⑤ Adjust the position of the support plate according to the height of the anchor bolts, so that the support plate is slightly higher than the top of the anchor bolts;

[0020] ⑥ Place the bottom of the column on the support plate, and align the anchor bolts with the bolt holes on the bottom of the column by moving the displacement plate.

[0021] ⑦ After aligning the anchor bolts with the bolt holes, lower the support plate slightly so that the bolt holes at the bottom of the column pass through the top of the anchor bolts;

[0022] ⑧ Using the hoisting rope, maintain the column at its current height, lower the support plate again to separate the top surface of the support plate from the bottom of the column, and finally pull the insert rod out from the ends of the two displacement plates and quickly pull out the displacement plates.

[0023] 9. Hoist the other column using the same method, with a center-to-center distance of 8000mm between the two columns; after the two columns are installed, connect and reinforce them.

[0024] S3. Reinforcement of the column:

[0025] ① The horizontal columns are spaced 8000mm apart. The two horizontal braces in the middle are welded together with 63# I-beams, and the cross braces in the middle are welded together with φ159×8 welded pipes. The V-shaped braces on both sides are welded together with φ273×12 seamless pipes, and the lower end of the V-shaped braces is 5000mm away from the edge of the column. This connection and reinforcement method is used for all three rows of columns after installation.

[0026] ② There are three rows of longitudinal columns, with column spacing of 13000mm and 12000mm. The horizontal bracing is made of 63# I-beams welded together in double sections. The middle diagonal bracing is made of φ159×8 welded pipe. The two end diagonal bracings are made of φ273×12 seamless pipe, with the lower end 6000mm from the center of the column.

[0027] ③ After the column reinforcement is completed, all joints are welded. After welding, the weld appearance needs to be inspected. The weld height is not less than 15mm and defects such as undercut, porosity and slag inclusion are not allowed.

[0028] S4. Laying of track beams:

[0029] ① Before laying the track beam, measure the levelness of the top plane of the 6 columns. The error should not exceed 10mm. If the error does not meet the requirements, steel plates of different thicknesses can be used for padding and adjustment. After the adjustment is qualified, the steel plates should be welded to the column heads.

[0030] ② The track beam consists of two sections: one section is 13000mm long between the loads and the other section is 12000mm long above the foundation. The joint between the two track beam sections is located at the top of the middle row of columns, and the connection is secure with high-strength bolts. Then, measure the track gauge and levelness of the two track beams. The track gauge error should not exceed 20mm, and the levelness error should not exceed 10mm.

[0031] S5. Installation of the gantry:

[0032] ① Select the foundation conditions for the gantry, including the traveling mechanism, bottom beam, main beam, and end beams. Connect the two main beams with the end beams to form a stable frame structure. The gantry itself is installed at a height of 4500mm.

[0033] ② First, clamp the thruster's rail clamp onto the rail in the middle of the track beam. Then, assemble the two traveling mechanisms and one bottom beam on the ground, connect them with high-strength bolts, and hoist the whole assembly onto the track. Secure four guy ropes on both sides. Since the traveling wheels do not have a drive mechanism or braking device, wedges should be used to block the bottom of the traveling wheels at both ends to prevent them from moving freely. Then, hoist the other traveling mechanism and bottom beam assembly in the same way, place it on the track, and secure guy ropes on both sides.

[0034] ③ Hoist the two rows of main beams and connect them to the bottom beams respectively, using high-strength bolts. Finally, install the end beams at both ends and connect them to the main beams to form a stable frame structure. After all the high-strength bolts are installed, tighten them with a torque of 800 NM.

[0035] S6. Install the thruster:

[0036] The thruster is installed in the middle of the two traveling mechanisms. One end of the thruster cylinder is connected to the rail clamp with a pin, and the other end is connected to the traveling mechanism hinge support with a pin. Connect the hydraulic pump station to the cylinder and the rail clamp with oil pipes.

[0037] S7. Arrangement of hydraulic lifting device:

[0038] ① Arrange the four hydraulic lifting devices on two 800×800×9000mm hoisting beams respectively, with two devices on each hoisting beam, symmetrically arranged from the center to both ends, with a distance of 2500mm between the two hydraulic lifting devices.

[0039] ② Place two lifting beams on the 500t gantry main beam. The two beams are symmetrically arranged with the center of the gantry as the starting point, and the center distance between the two beams is 2200mm. Each hydraulic lifting device has 16 steel strands inserted into it, for a total of 64 steel strands. The lifting capacity of a single steel strand is 8.5t, and the four hydraulic lifting devices can lift 544t.

[0040] ③ The lower steel strands of every two hydraulic lifting devices are passed through the lifting holes at both ends of a lifting spreader beam, and the lower ends are passed through the lower anchor heads and secured with claws; a spreader beam is fixed at the center of the upper part of the two lifting beams, and a 400t hook is hung below the spreader beam.

[0041] ④ Place the two pump stations on the platforms at both ends of the gantry, connect the hydraulic oil pipes and control cables, and have one pump station control two hydraulic lifting devices; after the main power is turned on, start the pump station and test the hydraulic lifting devices, perform lifting and lowering actions respectively, test single units or multiple units in linkage, and ensure that the actions are consistent.

[0042] S8. Unloading and hoisting into position:

[0043] ① After the hydraulic lifting device is installed and debugged, hang four long slings on the 400t hook. The transport vehicle will transport the generator stator to the bottom of the gantry. Align the center of gravity of the generator stator with the 400t hook. Hang the four slings on the four lifting arms of the generator stator respectively. Operate the hydraulic lifting device to lift the generator stator 100-200mm away from the transport vehicle and let it stand still for 10 minutes. Observe the gantry structure and column frame for any abnormalities. After confirming safety, the transport vehicle will drive out from under the generator stator. Then rotate the generator stator 90° and lower it back to the ground.

[0044] ② Check the hoisting structure for any abnormalities, mainly checking for deformation of the column structure and cracks in the welded joints.

[0045] ③ Generator stator hoisting: Remove the generator stator transport base, operate the hydraulic lifting device to lift it, and after the lifting height exceeds the generator foundation, use the hydraulic thruster to move the gantry above the foundation, so that the generator stator is aligned with the center line of the foundation. Then rotate the generator stator 90° in the installation direction, operate the hydraulic lifting device to lower it into place, and the generator stator hoisting is completed.

[0046] The positive and beneficial effects of this invention are:

[0047] 1. This invention, by setting up a displacement plate and using a lifting tool, enables quick hole-aligning operations for anchor bolts, reducing construction difficulty, improving work efficiency, and is convenient and easy to use.

[0048] 2. This invention utilizes a hydraulic lifting device in conjunction with a dedicated hoisting gantry to suspend the gantry's track, allowing the gantry to travel on the suspended track and effectively completing the hoisting of such large equipment. By suspending the gantry's track beams through supporting columns and reinforcing the connections between the columns, a stable frame structure is formed, ensuring construction safety.

[0049] 3. The track beam columns of this invention can be combined in various ways to change height and meet the hoisting requirements of different spaces. When hoisting large equipment, it is first lifted to the positioning height by a hydraulic lifting device, and then the gantry is moved to the positioning position by a hydraulic thruster on the track. The hydraulic lifting device is then lowered to position the equipment. The entire hoisting equipment has a stable structure, with a lifting speed of 10m / h for the hydraulic lifting device and a gantry moving speed of 8m / h. The mechanism operates smoothly without impact, and the hoisting process is safe and reliable. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the installation auxiliary device of the present invention;

[0051] Figure 2 This is a partial hoisting diagram of the column of the present invention;

[0052] Among them: 1-displacement plate, 2-handle, 3-positioning sleeve, 4-universal wheel, 5-insertion rod, 6-tightening bolt, 7-screw, 8-nut, 9-support plate, A-column, B-road plate, C-anchor bolt. Detailed Implementation

[0053] The invention will be further explained and described below with reference to the accompanying drawings:

[0054] Example 1, see Figures 1-2A track beam foundation installation tool for hoisting and constructing large equipment includes a displacement plate 1, casters 4, and a support plate 9. There are two displacement plates 1, which are symmetrically distributed on the left and right, and the two displacement plates 1 are connected together by a plug rod 5. Casters 4 are provided at the bottom of the displacement plate 1, and a screw rod 7 is threadedly connected to the middle of the bottom surface of the displacement plate 1. The support plate 9 is provided at the top of the screw rod 7.

[0055] The displacement plates 1 are distributed in an L-shape, and a handle 2 is provided on the left side of the top of the displacement plates 1.

[0056] A positioning sleeve 3 is provided at the end of the displacement plate 1, and the insertion rod 5 passes through the positioning sleeves of the two displacement plates 1 and is fixedly connected together by the tightening bolt 6.

[0057] A through hole is drilled in the middle of the bottom surface of the displacement plate 1. A nut 8 is fixedly connected below the through hole. A screw 7 passes through the through hole and is connected to the nut 8 by threads.

[0058] The cross-section of the support plate 9 is circular.

[0059] In the above description, the displacement plate has an L-shaped structure, and the handle is located on the outer top of the displacement plate.

[0060] In the above description, the two displacement plates are symmetrically distributed and aligned at both ends.

[0061] In the above description, the length of the bottom of the displacement plate is greater than the width of the column, which means that when in use, the insertion rod is located outside the column.

[0062] In the above description, the height of the support plate can be changed by rotating the screw 7.

[0063] Example 2, the construction method of the above-mentioned track beam foundation installation tool for hoisting large equipment includes the following steps:

[0064] S1. Construction Preparation:

[0065] ① Conduct a site survey and select the necessary equipment, machinery, materials, and tools for hoisting according to requirements;

[0066] ② Locate the foundation and determine the installation position of the track support column; before installation, a 4600mm×1800mm steel roadbed plate B needs to be laid under each column A to increase the load-bearing area.

[0067] S2. Installation of the column assembly:

[0068] ① According to the installation requirements, select the appropriate column for installation. Select three-section columns and combine them together with high-strength bolts. The bolt tightening torque is 800 NM. Combine them into a total of 6 columns with a diameter of 12000 mm for use.

[0069] ② Lay a roadbed plate B on each of the 6 prepared foundations. The center of the roadbed plate B should be aligned with the pre-marked center line. The surface of the roadbed plate should be flat and clean and should not be tilted. If the roadbed plate is uneven, the foundation below should be leveled again. The roadbed plate should not be suspended in the air.

[0070] ③ Install the assembled column A on the roadbed plate. Lift the column vertically and place it in the center of the roadbed plate. Pull the guy ropes from three directions and adjust the verticality of the column at the same time. The verticality should not exceed 10mm.

[0071] ④ Install displacement plate 1 between the bottom of column A and roadbed plate B, and connect the two displacement plates 1 together through the insertion rod 5;

[0072] ⑤ Adjust the position of the support plate 9 according to the height of the anchor bolt C, so that the support plate 9 is slightly higher than the top of the anchor bolt C;

[0073] ⑥ Place the bottom of column A on the support plate 9, and align the anchor bolt C with the bolt hole on the bottom surface of column A by moving the displacement plate 1.

[0074] ⑦ After aligning the anchor bolts with the bolt holes, lower the support plate 9 slightly so that the bolt holes at the bottom of the column pass through the top of the anchor bolts;

[0075] ⑧ Using the hoisting rope, maintain the column at its current height, lower the height of the support plate 9 again, so that the top surface of the support plate 9 is separated from the bottom of the column, and finally pull out the insertion rod 5 from the ends of the two displacement plates 1, and quickly pull out the displacement plates.

[0076] 9. Hoist the other column using the same method, with a center-to-center distance of 8000mm between the two columns; after the two columns are installed, connect and reinforce them.

[0077] S3. Reinforcement of the column:

[0078] ① The horizontal columns are spaced 8000mm apart. The two horizontal braces in the middle are welded together with 63# I-beams, and the cross braces in the middle are welded together with φ159×8 welded pipes. The V-shaped braces on both sides are welded together with φ273×12 seamless pipes, and the lower end of the V-shaped braces is 5000mm away from the edge of the column. This connection and reinforcement method is used for all three rows of columns after installation.

[0079] ② There are three rows of longitudinal columns, with column spacing of 13000mm and 12000mm. The horizontal bracing is made of 63# I-beams welded together in double sections. The middle diagonal bracing is made of φ159×8 welded pipe. The two end diagonal bracings are made of φ273×12 seamless pipe, with the lower end 6000mm from the center of the column.

[0080] ③ After the column reinforcement is completed, all joints are welded. After welding, the weld appearance needs to be inspected. The weld height is not less than 15mm and defects such as undercut, porosity and slag inclusion are not allowed.

[0081] S4. Laying of track beams:

[0082] ① Before laying the track beam, measure the levelness of the top plane of the 6 columns. The error should not exceed 10mm. If the error does not meet the requirements, steel plates of different thicknesses can be used for padding and adjustment. After the adjustment is qualified, the steel plates should be welded to the column heads.

[0083] ② The track beam consists of two sections: one section is 13000mm long between the loads and the other section is 12000mm long above the foundation. The joint between the two track beam sections is located at the top of the middle row of columns, and the connection is secure with high-strength bolts. Then, measure the track gauge and levelness of the two track beams. The track gauge error should not exceed 20mm, and the levelness error should not exceed 10mm.

[0084] S5. Installation of the gantry:

[0085] ① Select the foundation conditions for the gantry, including the traveling mechanism, bottom beam, main beam, and end beams. Connect the two main beams with the end beams to form a stable frame structure. The gantry itself is installed at a height of 4500mm.

[0086] ② First, clamp the thruster's rail clamp onto the rail in the middle of the track beam. Then, assemble the two traveling mechanisms and one bottom beam on the ground, connect them with high-strength bolts, and hoist the whole assembly onto the track. Secure four guy ropes on both sides. Since the traveling wheels do not have a drive mechanism or braking device, wedges should be used to block the bottom of the traveling wheels at both ends to prevent them from moving freely. Then, hoist the other traveling mechanism and bottom beam assembly in the same way, place it on the track, and secure guy ropes on both sides.

[0087] ③ Hoist the two rows of main beams and connect them to the bottom beams respectively, using high-strength bolts. Finally, install the end beams at both ends and connect them to the main beams to form a stable frame structure. After all the high-strength bolts are installed, tighten them with a torque of 800 NM.

[0088] S6. Install the thruster:

[0089] The thruster is installed in the middle of the two traveling mechanisms. One end of the thruster cylinder is connected to the rail clamp with a pin, and the other end is connected to the traveling mechanism hinge support with a pin. Connect the hydraulic pump station to the cylinder and the rail clamp with oil pipes.

[0090] S7. Arrangement of hydraulic lifting device:

[0091] ① Arrange the four hydraulic lifting devices on two 800×800×9000mm hoisting beams respectively, with two devices on each hoisting beam, symmetrically arranged from the center to both ends, with a distance of 2500mm between the two hydraulic lifting devices.

[0092] ② Place two lifting beams on the 500t gantry main beam. The two beams are symmetrically arranged with the center of the gantry as the starting point, and the center distance between the two beams is 2200mm. Each hydraulic lifting device has 16 steel strands inserted into it, for a total of 64 steel strands. The lifting capacity of a single steel strand is 8.5t, and the four hydraulic lifting devices can lift 544t.

[0093] ③ The lower steel strands of every two hydraulic lifting devices are passed through the lifting holes at both ends of a lifting spreader beam, and the lower ends are passed through the lower anchor heads and secured with claws; a spreader beam is fixed at the center of the upper part of the two lifting beams, and a 400t hook is hung below the spreader beam.

[0094] ④ Place the two pump stations on the platforms at both ends of the gantry, connect the hydraulic oil pipes and control cables, and have one pump station control two hydraulic lifting devices; after the main power is turned on, start the pump station and test the hydraulic lifting devices, perform lifting and lowering actions respectively, test single units or multiple units in linkage, and ensure that the actions are consistent.

[0095] S8. Unloading and hoisting into position:

[0096] ① After the hydraulic lifting device is installed and debugged, hang four long slings on the 400t hook. The transport vehicle will transport the generator stator to the bottom of the gantry. Align the center of gravity of the generator stator with the 400t hook. Hang the four slings on the four lifting arms of the generator stator respectively. Operate the hydraulic lifting device to lift the generator stator 100-200mm away from the transport vehicle and let it stand still for 10 minutes. Observe the gantry structure and column frame for any abnormalities. After confirming safety, the transport vehicle will drive out from under the generator stator. Then rotate the generator stator 90° and lower it back to the ground.

[0097] ② Check the hoisting structure for any abnormalities, mainly checking for deformation of the column structure and cracks in the welded joints.

[0098] ③ Generator stator hoisting: Remove the generator stator transport base, operate the hydraulic lifting device to lift it, and after the lifting height exceeds the generator foundation, use the hydraulic thruster to move the gantry above the foundation, so that the generator stator is aligned with the center line of the foundation. Then rotate the generator stator 90° in the installation direction, operate the hydraulic lifting device to lower it into place, and the generator stator hoisting is completed.

[0099] This invention utilizes a hydraulic lifting device in conjunction with a specialized hoisting gantry. The gantry's tracks are arranged in an elevated position, allowing the gantry to travel on these elevated tracks and effectively complete the hoisting of large equipment. The method involves suspending the gantry's track beams above supporting columns, which are then connected and reinforced with steel structures to form a stable frame. The track beams are then laid on top of the columns, forming two parallel tracks. The gantry, equipped with the hydraulic lifting device, travels along these tracks via a traveling mechanism to reach its designated position and complete the hoisting. Furthermore, the track beams and columns can be combined in various ways to vary in height and meet the hoisting requirements of different spaces. The gantry is designed to withstand a load of 500 tons, and a single hydraulic lifting device has a maximum lifting capacity of 200 tons. Multiple devices can be used in combination to complete the hoisting of generators, gas turbines, and high- and intermediate-pressure cylinders up to 500 tons.

[0100] In the Hainan Datang Wanning 2×460MW gas-fired power plant project, the generator weighed 360t and the gas turbine weighed 315t. The turbine building was designed with a single 2×130t overhead crane with two trolleys, which was insufficient for the hoisting of the generator and gas turbine. We utilized a hydraulic lifting device mounted on a gantry crane. By elevating the track beam 12m above the ground, the gantry crane traveled on the track beam, completing the hoisting of the generator and gas turbine. Simultaneously, the equipment was unloaded, 90° oriented, and then hoisted to its final position above the generator foundation, followed by another 90° oriented adjustment. This construction method has been successfully applied in the Ansteel No. 2 Power Plant gas-fired power plant project and the State Grid Energy Xinjiang Zhundong coal-fired power plant project. This method is technically mature, safe to use, and suitable for hoisting similar large equipment such as generators and gas turbines in the power construction industry.

[0101] This invention is applicable to the hoisting operations of large equipment such as generator stators, gas turbine modules, high and medium pressure cylinders, and transformers in the power construction industry. By adjusting the overhead height of the track beam and the installation height of the gantry, it can complete the hoisting of large equipment at different positioning heights. It occupies little space, is easy to assemble and disassemble, and the hoisting process is slow, impact-free, safe, and stable.

Claims

1. A construction method for a track beam foundation installation tool for hoisting large equipment, wherein the track beam foundation installation tool includes a displacement plate (1), a caster wheel (4), and a support plate (9), wherein there are two displacement plates (1), which are symmetrically distributed on the left and right, and the two displacement plates (1) are connected together by a plug rod (5); the bottom of the displacement plate (1) is provided with a caster wheel (4), the middle part of the bottom surface of the displacement plate (1) is connected to a screw rod (7) by a thread, and the top of the screw rod (7) is provided with a support plate (9), characterized in that, Includes the following steps: S1. Construction Preparation: ① Conduct a site survey and select the necessary equipment, machinery, materials, and tools for hoisting according to requirements; ② Locate the foundation and determine the installation position of the track support column; before installation, a 4600mm×1800mm steel roadbed plate (B) needs to be laid under each column (A) to increase the load-bearing area. S2. Installation of the column assembly: ① Based on installation requirements, select suitable columns for installation. Use three-section columns and assemble them together with high-strength bolts. The bolt tightening torque is 800 N·m; assemble a total of 6 columns, each 12000 mm in diameter, for use. ② Lay a roadbed plate (B) on each of the 6 prepared foundations. The center of the roadbed plate (B) should be aligned with the pre-marked center line. The surface of the roadbed plate should be flat and clean and should not be tilted. If the roadbed plate is uneven, the foundation below should be leveled again. The roadbed plate should not be suspended in the air. ③ Install the assembled column (A) on the roadbed plate. Lift the column vertically and place it on the center of the roadbed plate. Pull the guy ropes from three directions and adjust the verticality of the column at the same time. The verticality should not be greater than 10mm. ④ Install a displacement plate (1) between the bottom of the column (A) and the roadbed plate (B), and connect the two displacement plates (1) together by inserting a rod (5); ⑤ Adjust the position of the support plate (9) according to the height of the anchor bolt (C) so that the support plate (9) is slightly higher than the top of the anchor bolt (C); ⑥ Place the bottom of the column (A) on the support plate (9), and align the anchor bolts (C) with the bolt holes on the bottom surface of the column (A) by moving the displacement plate (1); ⑦ After aligning the anchor bolts with the bolt holes, lower the support plate (9) slightly so that the bolt holes at the bottom of the column can penetrate the top of the anchor bolts; ⑧ Using the hoisting rope, keep the column at its current height, lower the height of the support plate (9) again, so that the top surface of the support plate (9) is separated from the bottom of the column, and finally pull out the insert rod (5) from the ends of the two displacement plates (1) and quickly pull out the displacement plates; 9. Hoist the other column using the same method, with a center-to-center distance of 8000mm between the two columns; after the two columns are installed, connect and reinforce them. S3. Reinforcement of the column: ① The horizontal column spacing is 8000mm. The two horizontal braces in the middle are welded together with 63# I-beams. The cross brace in the middle is welded together with φ159×8 welded pipe. The figure-eight braces on both sides are welded together with φ273×12 seamless pipe. The lower end of the figure-eight brace is 5000mm away from the edge of the column. After the three rows of columns are installed, this connection and reinforcement method is used. ② There are 3 rows of longitudinal columns with a column spacing of 13000mm and 12000mm. The horizontal bracing is made of 63# I-beams welded together. The middle diagonal bracing is made of φ159×8 welded pipes. The two ends of the figure-eight diagonal bracing are made of φ273×12 seamless pipes. The lower end is 6000mm from the center of the column. ③ After the column reinforcement is completed, all nodes are welded connections. After welding, the weld appearance needs to be inspected. The weld height is not less than 15mm, and defects such as undercut, porosity and slag inclusion are not allowed. S4. Laying of track beams: ① Before laying the track beam, measure the levelness of the top plane of the 6 columns. The error should not exceed 10mm. If the error does not meet the requirements, steel plates of different thicknesses can be used for padding and adjustment. After the adjustment is qualified, the steel plates should be welded to the column heads. ② The track beam consists of two sections: one section is 13000mm long between the loads and the other section is 12000mm long above the foundation. The joint between the two track beam sections is at the top of the middle row of columns, and the high-strength bolts are used to securely connect them. Then, measure the track gauge and levelness of the two track beams. The track gauge error should not exceed 20mm, and the levelness error should not exceed 10mm. S5. Installation of the gantry: ① Select the basic working conditions for the gantry, including the traveling mechanism, bottom beam, main beam and end beam. Connect the two main beams with the end beams to form a stable frame structure. The height of the gantry after installation is 4500mm. ② First, clamp the thruster's rail clamp onto the rail in the middle of the track beam. Then, assemble the two traveling mechanisms and one bottom beam on the ground, connect them with high-strength bolts, and hoist the whole assembly onto the track. Secure four guy ropes on both sides. Since the traveling wheels do not have a drive mechanism or braking device, wedges should be used to block the bottom of the traveling wheels at both ends to prevent them from moving freely. Then, hoist the other traveling mechanism and bottom beam assembly in the same way, place it on the track, and secure guy ropes on both sides. ③ Hoist the two rows of main beams and connect them to the bottom beams respectively, using high-strength bolts. Finally, install the end beams at both ends and connect them to the main beams to form a stable frame structure. After all the high-strength bolts are installed, tighten them with a torque of 800 N·m. S6. Install the thruster: The thruster is installed in the middle of the two traveling mechanisms. One end of the thruster cylinder is connected to the rail clamp with a pin, and the other end is connected to the traveling mechanism hinge support with a pin. Connect the hydraulic pump station to the cylinder and the rail clamp with oil pipes. S7. Arrangement of hydraulic lifting device: ① Arrange the four hydraulic lifting devices on two 800×800×9000mm hoisting beams respectively, with two devices on each hoisting beam, symmetrically arranged from the center to both ends, with a distance of 2500mm between the two hydraulic lifting devices. ② Place two lifting beams on the 500t gantry main beam. The two beams are symmetrically arranged with the center of the gantry as the starting point, and the center distance between the two beams is 2200mm. Each hydraulic lifting device has 16 steel strands inserted into it, for a total of 64 steel strands. The lifting capacity of a single steel strand is 8.5t, and the four hydraulic lifting devices can lift 544t. ③ The lower steel strands of every two hydraulic lifting devices are passed through the lifting holes at both ends of a lifting spreader beam, and the lower ends are passed through the lower anchor heads and secured with claws; a spreader beam is fixed at the center of the upper part of the two lifting beams, and a 400t hook is hung below the spreader beam. ④ Place the two pump stations on the platforms at both ends of the gantry, connect the hydraulic oil pipes and control cables, and have one pump station control two hydraulic lifting devices; after the main power is turned on, start the pump station and test the hydraulic lifting devices, perform lifting and lowering actions respectively, test single units or multiple units in linkage, and ensure that the actions are consistent. S8. Unloading and hoisting into position: ① After the hydraulic lifting device is installed and debugged, hang four long slings on the 400t hook. The transport vehicle will transport the generator stator to the bottom of the gantry. Align the center of gravity of the generator stator with the 400t hook. Hang the four slings on the four lifting arms of the generator stator respectively. Operate the hydraulic lifting device to lift the generator stator 100-200mm away from the transport vehicle. Let it stand still for 10 minutes and observe whether there are any abnormalities in the gantry structure and column frame. After confirming safety, the transport vehicle will drive out from under the generator stator. Then rotate the generator stator 90° and lower it back to the ground. ② Check the hoisting structure for any abnormalities, mainly checking for deformation of the column structure and cracks in the welded joints. ③ Generator stator hoisting: Remove the generator stator transport base, operate the hydraulic lifting device to lift it, and after the lifting height exceeds the generator foundation, use the hydraulic thruster to move the gantry above the foundation, so that the generator stator is aligned with the center line of the foundation. Then rotate the generator stator 90° in the installation direction, operate the hydraulic lifting device to lower it into place, and the generator stator hoisting is completed.

2. The construction method for a track beam foundation installation tool for hoisting large equipment according to claim 1, characterized in that: The displacement plates (1) are distributed in an L-shape, and a handle (2) is provided on the left side of the top of the displacement plates (1).

3. The construction method for a track beam foundation installation tool for hoisting large equipment according to claim 1, characterized in that: The displacement plate (1) is provided with a positioning sleeve (3) at its end. The insertion rod (5) passes through the positioning sleeves (3) of the two displacement plates (1) and is fixedly connected together by a tightening bolt (6).

4. The construction method for a track beam foundation installation tool for hoisting large equipment according to claim 1, characterized in that: A through hole is provided in the middle of the bottom surface of the displacement plate (1), and a nut (8) is fixedly connected below the through hole. The screw (7) passes through the through hole and is connected to the nut (8) by threads.

5. The construction method for a track beam foundation installation tool for hoisting large equipment according to claim 1, characterized in that: The cross-section of the support plate (9) is circular.

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